Article Search Results

Show Filters
Showing 216 results for "chameleon diamonds"
Chameleon diamond before and after heating
Chameleon Diamond with Nickel Absorption Band

A rare chameleon diamond is examined in GIA's Carlsbad lab.

Read More

A Gemmological Study of a Collection of Chameleon Diamonds

Chameleon diamonds are among the rarest of gem diamonds.

Read More

Diamonds in Canada

This article chronicles the discovery of primary diamond deposits throughout Canada, whose increasing supply of rough stones will have a growing impact on the world diamond industry.

Read More

Article
Diamond History and Lore

The world’s love of diamonds began in India, where diamonds were gathered from the country’s rivers and streams. Some historians estimate that India was trading in diamonds as early as the fourth century BC.

Read More

Diamond from Mir Mine in Russia
A Glimpse into the Russian Diamond Trade

Overview and commentary on the 2013 Russian Diamonds and Jewellery article “New Reality of the Russian Jewellery Market”.

Read More

Pink Diamonds from Australia

The author reports on a sudden influx of natural fancy pink diamonds and their origins.

Read More

Gemesis Laboratory-Created Diamonds

High-quality synthetic diamonds created by the Gemesis Corp. are examined and their gemmological properties are explicated.

Read More

Grading the Hope Diamond

One of the most popular exhibits at the Smithsonian Institution, the stunning Fancy Dark greyish blue Hope diamond was formally graded by GIA’s gem laboratory.

Read More

Fancy yellow 0.40 ct type Ib CVD-grown synthetic diamond
Yellow CVD Synthetic Diamond

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

Read More

A History of Diamond Treatments

Modern gemmologists and diamantaires are faced with a broad spectrum of colour and clarity treatments ranging from the simple to the highly sophisticated.

Read More