The Carlsbad and New York laboratories and campuses will be closed on Monday, May 25 in observance of the Memorial Day holiday. These locations will resume regular business hours on May 26.

featured Research & News

Industry Analysis

U.S. Retail Sales Remain Cautious

The numbers for jewelry retail sales, De Beer sights and auction sales tell the story. Read More
Feature Article

Over the Top at BaselWorld

Take an insider’s tour through the gem-studded halls of BaselWorld 2015 in Switzerland. Read More
Research & News

2 Large HPHT-Grown Synthetic Diamonds

Examination by GIA’s Hong Kong lab reveals significant progress in this growth technology.
Read More
Alumni Profile

Grad Buys Headline-Grabbing Fancy Diamonds

Shmulik Polnauer buys Prosperity Pink, Pink Promise and Purple Orchid for Israel’s Leibish & Co.
Read More
Feature Article

Searching for Sapphire in Tasmanian Wilderness

Field gemologists journey to Tasmania to gather sapphire samples for GIA’s reference collection.
Read More

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