The following article is reproduced without alteration from the lab notes of Gems and Gemology, the quarterly scholarly journal of GIA, as excerpted from GIA Insider. Volume 9, Issue 21.
Phenakite as a Rough Diamond Imitation
The GIA Laboratory regularly receives near-colorless transparent crystals, pieces of rough or fragments for identification, often because they were sold as [...]
Archive for October, 2007
Current News at the GIA Lab: Rough Identification.
Posted in News, gemology, research on October 30, 2007 | Leave a Comment »
De Beers Backs African Polishing, Asks Antwerep, Tel Aviv, New York To Train Africans
Posted in News, business, gemology on October 16, 2007 | Leave a Comment »
On Monday the managing director of the De Beers Group, Gareth Penny, appealed to diamond traders worldwide to support De Beers in its backing of African attempts to retain rough diamonds for polishing within the continent. Citing the creation of jobs and stability for African democracies, Penny said “We don’t embrace this out of [...]
Rare Vivid Blue Diamond Shatters World Auction Records
Posted in News, business, gemology on October 9, 2007 | Leave a Comment »
Sotherby’s auctioned off an emerald cut 6.04 carat fancy vivid blue diamond ring which commanded the highest price per carat paid at auction for any stone in history. The auction was held in Hong Kong, and the diamond originated from South Africa, as is the case with almost all blue diamonds. The stone boasts a [...]
World’s Largest Diamond: A 7,000 Carat Fake.
Posted in News, gemology on October 7, 2007 | Leave a Comment »
In Late August, news began circulating worldwide that what could prove to be the world’s largest diamond had been discovered in South Africa. The small scale mining company claimed to have found a stone that weighed around 7,000 carats (around the size of a coconut), and was of a green color. An early [...]
Burma: The Jade Trade
Posted in News, business, gemology, personal on October 5, 2007 | Leave a Comment »
Burma (Myanmar)… When it comes to localities known for the production of truly fine gemstones, few rival this region. It is after all, well renowned for its breathtaking and exquisite rubies, sapphires and peridot, among many others. While Burma is a beautiful country, rich in culture and natural resources, it [...]
