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Diamond (gemstone)

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A diamond (from the ancient Greek ἀδάμας – adámas, meaning "unbreakable," "proper," or "unalterable") is one of the best-known and most sought-after gemstones. [1]

143 relations: Adornment, Ammonia, Ancient history, Ancient Rome, Anniversary, Antwerp, Antwerp diamond district, Antwerpsche Diamantkring, Art Deco, Arthashastra, Aurora Pyramid of Hope, Austria, Avoirdupois, Baguette, Barney Barnato, Belgium, Big Hole, Birthstone, Black light, Blood diamond, Blue, Blue-green, Borneo, Brilliant (diamond cut), British Library, Brown diamonds, Buddhism, Cambridge University Press, Cape Colony, Carat (mass), Cecil Rhodes, Central Africa, Central India Agency, Chanakya, Charles Rudd, Child labour in the diamond industry, China, Complementary colors, Computer simulation, Corundum, Crete, Crystal structure, Cube root, Cubic zirconia, De Beers, De Beers antitrust litigation, De facto, Diamantaire, Diamond, Diamond cut, ..., Diamond cutting, Diamond jubilee, Diamond Sutra, Diamonds as an investment, Dispersion (optics), Encarta, Engagement ring, Engraving, Eureka Diamond, Fluorescence, Gemological Institute of America, Gemology, Gemstone, George Frederick Kunz, Goat, Golkonda, Greek language, Greek mythology, Green, Hardness, Hearts and arrows, Heraldry, Hierarchy of precious substances, Hinduism, Hope Diamond, Hue, Human rights, Hydrophobe, Incantation, India, Indra, Infection, Insanity, Isidore of Seville, Jewellery, Kilogram, Kimberley Process Certification Scheme, Kimberley, Northern Cape, Light, List of diamond mines, List of diamonds, Lodestone, Magnet, Magnetite, Marcel Tolkowsky, Market capitalization, Martin Rapaport, Mary of Burgundy, Mathematician, Maximilian I, Holy Roman Emperor, Middle Ages, Mining, Miracle, Misnomer, Mogao Caves, Natural History (Pliny), News24, Nitrogen, Orange (colour), Orange Free State, Orange River, Ounce, Panic, Physical property, Plato, Pliny the Elder, Princess cut, Rapaport Diamond Report, Red, Robert Boyle, Roman Empire, Royal Asscher Diamond Company, Sampling (statistics), Sanskrit, Sleepwalking, South Africa, Southeast Asia, Spectral color, Spinel, Steam, Sunlight, Supernatural, Surat, Symmetry, Synthetic diamond, The Atlantic, Ultrasonic cleaning, Ultraviolet, United Nations, United States Geological Survey, West Africa, Yellow, Zeus. Expand index (93 more) »


An adornment is generally an accessory or ornament worn to enhance the beauty or status of the wearer.

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Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH3.

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Ancient history

Ancient history is the aggregate of past events, "History" from the beginning of recorded human history and extending as far as the Early Middle Ages or the Postclassical Era.

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Ancient Rome

Ancient Rome was an Italic civilization that began on the Italian Peninsula as early as the 8th century BC.

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An anniversary is a day that commemorates or celebrates a past event that occurred on the same date of the year as the initial event.

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Antwerp (Antwerpen, Anvers) is a city in Belgium which is the capital of Antwerp province.

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Antwerp diamond district

Antwerp's diamond district, also known as the Diamond Quarter (Diamantkwartier), and dubbed the Square Mile is an area within the city of Antwerp, Belgium.

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Antwerpsche Diamantkring

The Antwerpsche Diamantkring was established in 1928 in Antwerp, Belgium, to become the first diamond bourse worldwide that is dedicated exclusively to rough diamonds trade.

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Art Deco

Art Deco, or Deco, is an influential visual arts design style that first appeared in France just before World War I and began flourishing internationally in the 1920s, 1930s and 1940s before its popularity waned after World War II.

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The Arthashastra (Sanskrit: अर्थशास्त्र; IAST: Arthaśāstra) is an ancient Indian treatise on statecraft, economic policy and military strategy, written in Sanskrit.

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Aurora Pyramid of Hope

The Aurora Pyramid of Hope is a collection of 296 natural diamonds in a wide variety of colors, billed as "the most comprehensive natural color diamond collection in the world".

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Austria (Österreich), officially the Republic of Austria (Republik Österreich), is a federal republic and a landlocked country of over 8.5 million people in Central Europe.

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The avoirdupois system (abbreviated avdp) is a system of weights (more properly, mass) based on a pound of 16 ounces.

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A baguette is a long thin loaf of French bread that is commonly made from basic lean dough (the dough, though not the shape, is defined by French law).

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Barney Barnato

Barney Barnato (21 February 1851 – 14 June 1897), born Barnet Isaacs, was a British Randlord, one of the entrepreneurs who gained control of diamond mining, and later gold mining, in South Africa from the 1870s.

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Belgium (België; Belgique; Belgien), officially the Kingdom of Belgium, is a sovereign state in Western Europe.

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Big Hole

The Big Hole, Open Mine, Kimberley Mine or Tim Kuilmine (Groot Gat) is an open-pit and underground mine in Kimberley, South Africa, and claimed to be the largest hole excavated by hand, although this claim is disputed.

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A birthstone is a gemstone that symbolizes a month of birth.

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Black light

A black light, also referred to as a UV-A light, Wood's light, or simply ultraviolet light, is a lamp that emits long wave (UV-A) ultraviolet light and not much visible light.

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Blood diamond

Blood diamonds (also called conflict diamonds, converted diamonds, hot diamonds, or war diamonds) is a term used for a diamond mined in a war zone and sold to finance an insurgency, an invading army's war efforts, or a warlord's activity.

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Blue is the colour between violet and green on the optical spectrum of visible light.

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Blue-green is a color that is a representation of the color that is between blue and green on a typical traditional old-fashioned RYB color wheel.

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Borneo (Kalimantan, Borneo) is the third-largest island in the world and the largest island in Asia.

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Brilliant (diamond cut)

A brilliant is a diamond or other gemstone, cut in a particular form with numerous facets so as to have exceptional brilliance.

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British Library

The British Library is the national library of the United Kingdom and the largest library in the world by number of items catalogued.

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Brown diamonds

Brown diamonds are the most common color variety of natural diamonds.

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Buddhism is a nontheistic religion or philosophy (Sanskrit: dharma; Pali: धम्म dhamma) that encompasses a variety of traditions, beliefs and spiritual practices largely based on teachings attributed to Gautama Buddha, commonly known as the Buddha ("the awakened one").

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Cambridge University Press

Cambridge University Press (CUP) is the publishing business of the University of Cambridge.

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Cape Colony

The Cape of Good Hope, colloquially also known as the Cape Colony (Kaapkolonie), was a British colony in present-day South Africa and Namibia, named for the Cape of Good Hope.

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Carat (mass)

The carat (ct) is a unit of mass equal to 200 mg (0.2 g; 0.007055 oz) and is used for measuring gemstones and pearls.

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Cecil Rhodes

Cecil John Rhodes PC (5 July 1853 – 26 March 1902) was a British imperialist, businessman, mining magnate, and politician in South Africa.

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Central Africa

Central Africa is a core region of the African continent which includes Burundi, the Central African Republic, Chad, the Democratic Republic of the Congo, and Rwanda.

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Central India Agency

The Central India Agency was a political office of the British Indian Empire, which covered the north-western half of present-day Madhya Pradesh state.

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Chanakya (IAST:;; 350 – 275 BCE) was an Indian teacher, philosopher, economist, jurist and royal advisor.

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Charles Rudd

Charles Dunell Rudd (22 October 1844 – 15 November 1916) was the main business associate of Cecil John Rhodes.

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Child labour in the diamond industry

Child labour in the diamond industry is a widely reported and criticized issue on diamond industry for using child labour in diamond mines and polishing procedures in poor conditions mainly in India and Africa.

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China, officially the People's Republic of China (PRC), is a sovereign state in East Asia.

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Complementary colors

Complementary colors are pairs of colors which, when combined, cancel each other out.

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Computer simulation

A computer simulation is a simulation, run on a single computer, or a network of computers, to reproduce behavior of a system.

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Corundum is a crystalline form of aluminium oxide typically containing traces of iron, titanium, vanadium and chromium.

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Crete (Κρήτη,; Ancient Greek: Κρήτη, Krḗtē) is the largest and most populous of the Greek islands, and the fifth-largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica.

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Crystal structure

In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid.

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Cube root

In mathematics, a cube root of a number x is a number a such that a3.

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Cubic zirconia

Cubic zirconia (CZ) is the cubic crystalline form of zirconium dioxide (ZrO2).

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De Beers

The De Beers Group of Companies has a leading role in the diamond exploration, diamond mining, diamond retail, diamond trading and industrial diamond manufacturing sectors.

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De Beers antitrust litigation

The De Beers diamonds antitrust class action sought to end an alleged 60-year conspiracy to fix the price of rough diamonds in the U.S. by the De Beers group of companies.

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De facto

De facto is a Latin expression that means "in fact, in reality, in actual existence, force, or possession, as a matter of fact" (literally "from fact").

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A diamantaire (French origin) is a gem-quality diamond manufacturer or producer, master diamond cutter, and graduate gemologist specializes in diamonds.

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In mineralogy, diamond (or; from the ancient Greek ἀδάμας – adámas "unbreakable") is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice.

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Diamond cut

A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut.

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Diamond cutting

Diamond cutting is the practice of changing a diamond from a rough stone into a faceted gem.

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Diamond jubilee

A diamond jubilee is a celebration held to mark a 60th or 75th anniversary.

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Diamond Sutra

The Diamond Sūtra is a Mahāyāna (Buddhist) sūtra from the Prajñāpāramitā, or "Perfection of Wisdom" genre, and emphasizes the practice of non-abiding and non-attachment.

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Diamonds as an investment

The value of diamonds as an investment is of significant interest to the general public, because they are expensive gemstones, often purchased in engagement rings, due in part to a successful 20th century marketing campaign by De Beers.

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Dispersion (optics)

In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.

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Microsoft Encarta was a digital multimedia encyclopedia published by Microsoft Corporation from 1993 to 2009.

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Engagement ring

An engagement ring is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures.

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Engraving is the practice of incising a design onto a hard, usually flat surface, by cutting grooves into it.

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Eureka Diamond

The Eureka Diamond was the first diamond discovered in South Africa.

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Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation.

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Gemological Institute of America

The Gemological Institute of America, or GIA, is a nonprofit institute dedicated to research and education in the field of gemology and the jewelry arts.

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Gemology or gemmology is the science dealing with natural and artificial gems and gemstones.

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A gemstone or gem (also called a fine gem, jewel, or a precious or semi-precious stone) is a piece of mineral crystal, which, in cut and polished form, is used to make jewelry or other adornments.

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George Frederick Kunz

George Frederick Kunz (September 29, 1856 – June 29, 1932) was an American mineralogist and mineral collector.

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The domestic goat (Capra aegagrus hircus) is a subspecies of goat domesticated from the wild goat of southwest Asia and Eastern Europe.

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Golconda, also known as Golkonda or Golla konda ("shepherd's hill"), a fort of Southern India and capital of the medieval sultanate of the Qutb Shahi dynasty (c.1518–1687), is situated west of Hyderabad.

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Greek language

Greek or Hellenic (Modern Greek: ελληνικά, elliniká, "Greek", ελληνική γλώσσα, ellinikí glóssa, "Greek language") is an independent branch of the Indo-European family of languages, native to the southern Balkans, the Aegean Islands, western Asia Minor, parts of northern and Eastern Anatolia and the South Caucasus, southern Italy, Albania and Cyprus.

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Greek mythology

Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.

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Green is the color between blue and yellow on the spectrum of visible light.

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Hardness is a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied.

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Hearts and arrows

Hearts and Arrows diamonds are precision-cut variations of the traditional 57 faceted round brilliant cut.

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Heraldry is the profession, study, or art of creating, granting, and blazoning arms and ruling on questions of rank or protocol, as exercised by an officer of arms.

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Hierarchy of precious substances

In popular culture, sets of precious substances may form hierarchies which express conventional perceived relative value or merit.

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Hinduism is the dominant religion, or way of life, in South Asia, most notably in India and Nepal.

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Hope Diamond

The Hope Diamond, also known as Le Bijou du Roi ("the King's Jewel"), Le bleu de France ("the Blue of France"), and the Tavernier Blue, is a large,,w deep-blue diamond, and now housed in the National Gem and Mineral collection at the National Natural History Museum in Washington, D.C. It is blue to the naked eye because of trace amounts of boron within its crystal structure, and exhibits red phosphorescence after exposure to ultraviolet light.

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Hue is one of the main properties (called color appearance parameters) of a color, defined technically (in the CIECAM02 model), as "the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow" (the unique hues).

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Human rights

Human rights are moral principles or normsJames Nickel, with assistance from Thomas Pogge, M.B.E. Smith, and Leif Wenar, Dec 13, 2013, Stanford Encyclopedia of Philosophy,, Retrieved Aug.

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In chemistry, hydrophobicity is the physical property of a molecule (known as a hydrophobe) that is seemingly repelled from a mass of water.

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An incantation or enchantment is a charm or spell created using words.

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India, officially the Republic of India, is a country in South Asia.

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(), also known as in the Vedas, is the leader of the Devas and the lord of Svargaloka or heaven in Hinduism.

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Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to these organisms and the toxins they produce.

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Insanity, craziness or madness is a spectrum of behaviors characterized by certain abnormal mental or behavioral patterns.

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Isidore of Seville

Saint Isidore of Seville (Isidorus Hispalensis; c. 560 – 4 April 636) served as Archbishop of Seville for more than three decades and is considered, as the 19th-century historian Montalembert put it in an oft-quoted phrase, "The last scholar of the ancient world".

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Jewellery or jewelrysee American and British spelling differences consists of small decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, and bracelets.

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The kilogram or kilogramme (SI unit symbol: kg), is the base unit of mass in the International System of Units (SI) (the Metric system) and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK).

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Kimberley Process Certification Scheme

The Kimberley Process Certification Scheme (KPCS) is the process established in 2003 to prevent "conflict diamonds" from entering the mainstream rough diamond market by United Nations General Assembly Resolution 55/56 following recommendations in the Fowler Report.

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Kimberley, Northern Cape

Kimberley is the capital of the Northern Cape Province of South Africa.

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Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

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List of diamond mines

There are a limited number of commercially viable diamond mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply.

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List of diamonds

A number of large or extraordinary diamonds have gained fame, both as exquisite examples of the beautiful nature of diamonds and because of the famous people who wore, bought, and sold them.

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A lodestone, or loadstone, is a naturally magnetized piece of the mineral magnetite.

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A magnet (from Greek λίθος magnḗtis líthos, "Magnesian stone") is a material or object that produces a magnetic field.

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Magnetite is a mineral, one of the three common naturally occurring iron oxides (chemical formula Fe3O4) and a member of the spinel group.

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Marcel Tolkowsky

Marcel Tolkowsky (25 December 1899 – 10 February 1991) Obituary.

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Market capitalization

Market capitalization or market cap is the total money market value of the shares outstanding of a publicly traded company; it is equal to the share price times the number of shares outstanding.

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Martin Rapaport

Martin Rapaport is chairman of the Rapaport Group and founder of the Rapaport Diamond Report.

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Mary of Burgundy

Mary (13 February 1457 – 27 March 1482), Duchess of Burgundy, reigned over the Low Countries from 1477 until her death.

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A mathematician is someone who uses an extensive knowledge of mathematics in his or her work, typically to solve mathematical problems.

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Maximilian I, Holy Roman Emperor

Maximilian I (22 March 1459 – 12 January 1519), the son of Frederick III, Holy Roman Emperor, and Eleanor of Portugal, was King of the Romans (also known as King of the Germans) from 1486 and Holy Roman Emperor from 1508 until his death, though he was never in fact crowned by the Pope, the journey to Rome always being too risky.

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Middle Ages

In European history, the Middle Ages or Medieval period lasted from the 5th to the 15th century.

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Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner.

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A miracle is an event not explicable by natural or scientific laws.

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A misnomer is a word or term that suggests a meaning that is known to be wrong.

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Mogao Caves

The Mogao Caves or Mogao Grottoes, also known as the Caves of the Thousand Buddhas, form a system of 492 temples southeast of the center of Dunhuang, an oasis strategically located at a religious and cultural crossroads on the Silk Road, in Gansu province, China.

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Natural History (Pliny)

The Natural History (Naturalis Historia) is an early encyclopedia in Latin by Pliny the Elder, who died in 79 AD.

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News24.com is an English-language South African online news publication created in October 1998 by the multinational media company, Naspers.

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Nitrogen is a chemical element with symbol N and atomic number 7.

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Orange (colour)

Orange is the colour between red and yellow on the spectrum of light, and in the traditional colour wheel used by painters.

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Orange Free State

The Orange Free State (Oranje-Vrijstaat, Oranje-Vrystaat, abbreviated as OVS) was an independent Boer sovereign republic in southern Africa during the second half of the 19th century, and later a British colony and a province of the Union of South Africa.

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Orange River

The Orange River (Afrikaans/Dutch: Oranjerivier), Gariep River, Groote River or Senqu River is the longest river in South Africa.

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An ounce (abbreviated oz; apothecary symbol: ℥) is a unit of mass used in some systems of measurement.

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Panic is a sudden sensation of fear which is so strong as to dominate or prevent reason and logical thinking, replacing it with overwhelming feelings of anxiety and frantic agitation consistent with an animalistic fight-or-flight reaction.

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Physical property

A physical property is any property that is measurable whose value describes a state of a physical system.

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Plato (Greek: Πλάτων Plátōn "broad" in Classical Attic; 428/427 or 424/423 – 348/347 BC) was a philosopher and mathematician in Classical Greece, and the founder of the Academy in Athens, the first institution of higher learning in the Western world.

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Pliny the Elder

Gaius Plinius Secundus (AD 23 – August 25, AD 79), better known as Pliny the Elder, was a Roman author, naturalist, and natural philosopher, as well as naval and army commander of the early Roman Empire and personal friend of the emperor Vespasian.

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Princess cut

The Princess cut is the second most popular cut shape for diamonds, next to a round brilliant.

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Rapaport Diamond Report

The Rapaport Report is the jewelry industry standard for the pricing of diamonds.

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Red is the color at the end of the spectrum of visible light next to orange and opposite violet.

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Robert Boyle

Robert Boyle FRS was an Irish natural philosopher, chemist, physicist and inventor born in Lismore, County Waterford, Ireland.

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Roman Empire

The Roman Empire (Imperium Rōmānum; Ancient and Medieval Greek: Βασιλεία τῶν Ῥωμαίων Basileia tōn Rhōmaiōn) was the post-Republican period of the ancient Roman civilization, characterized by government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia.

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Royal Asscher Diamond Company

The Royal Asscher Diamond Company (Koninklijke Asscher Diamant Maatschappij) was founded in 1854 by the Asscher family.

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Sampling (statistics)

In statistics, quality assurance, and survey methodology, sampling is concerned with the selection of a subset of individuals from within a statistical population to estimate characteristics of the whole population.

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Sanskrit (Sanskrit: or, originally, "refined speech") is the primary sacred language of Hinduism, a philosophical language in Buddhism, Hinduism and Jainism, and a literary language that was in use as a lingua franca in Greater India.

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Sleepwalking, also known as somnambulism or noctambulism, is a sleep disorder belonging to the parasomnia family.

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South Africa

South Africa, officially the Republic of South Africa, is the southernmost country in Africa.

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Southeast Asia

Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia.

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Spectral color

A spectral color is a color that is evoked by a single wavelength of light in the visible spectrum, or by a relatively narrow band of wavelengths.

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Spinel is the magnesium aluminium member of the larger spinel group of minerals.

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Steam is water in the gas phase, which is formed when water boils.

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Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.

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The supernatural (Medieval Latin: supernātūrālis: supra "above" + naturalis "natural", first used: 1520–1530 AD) is that which is not subject to the laws of physics or, more figuratively, that which is said to exist above and beyond nature.

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Surat, previously known as Suryapur, is a city in the Indian state of Gujarat.

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Symmetry (from Greek συμμετρία symmetria "agreement in dimensions, due proportion, arrangement") in everyday language refers to a sense of harmonious and beautiful proportion and balance.

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Synthetic diamond

Synthetic diamond (also known as cultured diamond or cultivated diamond) is diamond produced in an artificial process, as opposed to natural diamonds, which are created by geological processes.

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The Atlantic

The Atlantic is an American magazine, founded (as The Atlantic Monthly) in 1857 in Boston, Massachusetts, now based in Washington, D.C. It was created as a literary and cultural commentary magazine, growing to achieve a national reputation as a high-quality review with a moderate worldview.

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Ultrasonic cleaning

An ultrasonic cleaning is a process that uses ultrasound (usually from 20–400 kHz) and an appropriate cleaning solvent (sometimes ordinary tap water) to clean items.

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Ultraviolet (UV) light is an electromagnetic radiation with a wavelength from 400 nm to 100 nm, shorter than that of visible light but longer than X-rays.

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United Nations

The United Nations (UN) is an intergovernmental organization to promote international co-operation.

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United States Geological Survey

The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.

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West Africa

West Africa, also called Western Africa and the West of Africa, is the westernmost subcontinent of Africa.

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Yellow is the color of gold, butter, and ripe lemons.

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Zeus (Ζεύς, Zeús,; Modern Δίας, Días) was the sky and thunder god in ancient Greek religion, who ruled as king of the gods of Mount Olympus.

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4 Cs, Diamonds (gemstone), Three Cs.


[1] https://en.wikipedia.org/wiki/Diamond_(gemstone)

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