Research & News

Recent articles

Gems & Gemology Fall 2022 In Brief
Fall 2022 G&G Available Now

Brooke Goedert, November 11, 2022

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Review of Pegmatites and Their Gem Minerals, by Michael Menzies and Jeffrey Scovil.
Book Review: Pegmatites and Their Gem Minerals

James E. Shigley, November 3, 2022

Review of Pegmatites and Their Gem Minerals, by Michael Menzies and Jeffrey Scovil.

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

Brooke Goedert, January 31, 2020

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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

Stephen Morisseau, January 13, 2020

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

Russell Shor, November 19, 2019

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

Russell Shor, October 21, 2019

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

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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

Russell Shor, October 21, 2019

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

Russell Shor, September 23, 2019

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

Russell Shor, September 20, 2019

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

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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

Russell Shor, September 20, 2019

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

Sharon Bohannon, August 9, 2019

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

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GIA Knowledge Sessions

Webinar Series,

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