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G-Color CVD Synthetic Diamond
CVD Synthetic Diamond with Unusual DiamondView Image

Deep blue fluorescence in a CVD synthetic diamond mimics patterns found in natural specimens.

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CVD Synthetic Round Brilliant
Round CVD Synthetic Diamond Over 1 Ct Identified in Hong Kong Lab

Advances in CVD growth technology have resulted in crystals that yield well-proportioned round brilliant cuts.

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Article
GIA Gem Project
Beryl

Chemically pure beryl is colorless, but trace elements give rise to green, blue and pink/red colors.

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Article
GIA Gem Project
Corundum

Ruby and sapphire (usually blue, but also in every other color) have been the most important colored gemstones for several thousand years. Originating historically in southeast and central Asia, and more recently in eastern Africa, these colored varieties of the mineral corundum have been much sought as gems because of their rarity, color and durability. Gem corundum can display asterism and chatoyancy due to the presence of oriented mineral inclusions, and in some cases, a change of color when viewed under different light sources.

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Article
GIA Gem Project
Corundum

Ruby and sapphire (usually blue, but also in every other color) have been the most important colored gemstones for several thousand years. Originating historically in southeast and central Asia, and more recently in eastern Africa, these colored varieties of the mineral corundum have been much sought as gems because of their rarity, color and durability. Gem corundum can display asterism and chatoyancy due to the presence of oriented mineral inclusions, and in some cases, a change of color when viewed under different light sources.

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2016 GJX show at Tucson
Tucson 2016

An overview of the 2016 gem shows.

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Article
Morganite Quality Factors

Learn about the factors that make morganite so desirable.

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Article
Morganite History and Lore

Following the discovery of a new locality for rose beryl in Madagascar in 1910, George Kunz proposed the name morganite at a meeting of the New York Academy of Sciences on 5 December 1910 to honor his friend and customer J.P. Morgan.

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Article
Morganite Description

Like many gems found in pegmatites, morganite can form large crystals.

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Summer 2012 Gem News International

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

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