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Diamond

#Abrasives #Superhard materials #Transparent materials #Carbon #Semiconductor materials

1 What does the following picture show?  The Darya-I-Nur Diamond—an example of unusual diamond cut and jewelry arrangement   Theoretically predicted phase diagram of carbon   Schematic diagram of a volcanic pipe

2 Diamonds have also rarely been found in deposits left behind by glaciers (notably in Wisconsin and ________); in contrast to alluvial deposits, glacial deposits are minor and are therefore not viable commercial sources of diamond.

3 What transport system is Diamond served by?

4 Recently, diamond cutting centers have been established in China, India, ________, Namibia and Botswana.

5 [57] Other important centers of diamond cutting and trading are ________, where the International Gemological Institute is based, London, New York City, Tel Aviv, and Amsterdam.

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

7 Special gemological techniques have been specially developed to distinguish natural and ________ and diamond simulants.

8 Today, diamonds are located in the diamond-rich density fraction with the help of ________, after which the final sorting steps are done by hand.

9 The most familiar use of diamonds today is as gemstones used for ________, a use which dates back into antiquity.

10 Historically diamonds were found only in alluvial deposits in ________.

💡 Interesting Facts

  • the first diamonds in Namibia were found near the village of Berseba in 1898?
  • the Uncle Sam diamond, the largest diamond ever discovered in the United States, bears the nickname of the man who found it?
  • the former main jewel on the Bavarian crown, the Wittelsbach Diamond, was almost cut into several smaller diamonds?
  • the original owner of the diamond Star of the South (replica pictured) sold it for a mere £3,000, and the buyer later deposited it in the bank of Rio de Janeiro for £30,000?
  • the recorded history of the Briolette of India dates back to the 12th century, making it possibly the world's oldest diamond on record?
  • the Moon of Baroda, a 24.04-carat diamond, was worn by actress Marilyn Monroe and Empress Marie Therese of Austria?
  • the Eureka Diamond, the first diamond discovered in South Africa, was used as a toy by the boy who discovered it, given away for free by his mother, and sent by mail to a mineralogist in an ordinary paper envelope?
  • Deepdene is believed to be the world's largest irradiated diamond?
  • Debswana, a joint venture between De Beers and the government of Botswana, is the largest producer of diamonds by value in the world?
  • Jules Porgès was a financier central to the rise of the Randlords who controlled the diamond and gold mining industries in South Africa from the 1870s?
  • after adding thallium formate and thallium malonate to water, diamonds can float in it?
  • the spintronic manipulation of nitrogen-vacancy centers in diamond crystals may facilitate the creation and functioning of quantum computers?
  • fashion designer Maria Grachvogel created a dress adorned with 2,000 diamonds worth £250,000 for her London Fashion Week show?
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