Research & News

Recent articles

G&G Winter 2019 Cover
Winter 2019 G&G: Geographic Origin Special Issue

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A piece of diamond rough with green body color and triangular etchings on the surface.
GIA Researchers Reveal the Secrets to Diamond-in-a-Diamond Mystery

Researchers examined one of the most interesting and unique diamond crystals ever found.

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A rectangular cut Fancy Deep blue diamond is framed by two pear shaped diamonds.
Diamond Market in Recovery, Top-end Auction Results

World’s two largest diamond producers say market is stabilizing after severe cutbacks in rough sales.

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A diamond necklace that features a 100.02 Fancy Intense yellow diamond. The pendant is done in the shape of a musical instrument.
Bullish Predictions for 2019 Holiday Sales Despite Concerns, Sotheby’s Hong Kong Auction Sales

U.S. holiday sales predictions look good. Sotheby’s Hong Kong auction features GIA alumna pieces.

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A truck travel the circular roadways of the large mine.
US Consumer Confidence Remains Strong; Alluvial Diamond Tracking and Illegal Gold

U.S. consumer confidence has kept the economy from sliding into a possible recession.

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A large group of people outside on GIA’s Carlsbad, California  campus.
Guardians of Trust: GIA’s Innovative Research, Instruments and Services

GIA’s services, instruments address new treatments and laboratory-grown gems as they enter the market.

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The octopus head is a baroque Tahitian cultured pearl and its arms are made of black, yellow and white diamond (in a striped pattern) set in black-plated 18K gold.
A Tropical Paradise of Ocean-Inspired Jewelry and Gemstones

Escape to a warm-water paradise with these jewels and gemstones that evoke the ocean’s essence.

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