featured Research & News

Gem News International

Rubies from a New Deposit in Madagascar

A field expedition from GIA Bangkok explores a new ruby deposit and collects specimens for study.
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Gem News International

Golden Coral Imitated by Plastic

A bracelet created to simulate the properties of golden coral is proven to be a plastic imitation.
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Industry Analysis

Better Than Expected: Hong Kong Demand Buoys Market

Encouraging demand at the March Hong Kong Gem and Jewellery Show has buoyed the industry’s mood.
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Gem News International

Large Colorless HPHT Synthetic Gem Diamonds from China

GIA researchers examine 50 crystals ranging from about 0.5 to 1.2 ct that are basically colorless, with only a few metallic inclusions.
FEATURE

Diamonds Under the Scope

Peer through a microscope and discover another world of gems. Inclusions reveal the gem’s journey from deep within the earth to its surface.
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