featured Research & News

Gems & Gemology
Gems & Gemology

Winter Issue Features Rough Diamonds

Tenders and live auctions have brought sweeping changes to the rough diamond market.
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Research & News

2 Large HPHT-Grown Synthetic Diamonds

Examination by GIA’s Hong Kong lab reveals significant progress in this growth technology.
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Industry Analysis

‘Perfect Storms’ Cloud BaselWorld Business

World turmoil has begun to catch up with consumers of most of the top gems and jewelry.
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Alumni Profile

Grad Buys Headline-Grabbing Fancy Diamonds

Shmulik Polnauer buys Prosperity Pink, Pink Promise and Purple Orchid for Israel’s Leibish & Co.
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Tucson 2015

Gemologists Share the Latest Research Activities

An overview of GIA’s gem identification projects and fancy cut evaluation.
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