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Shanghai, China
Article
Visit to the China Diamond Exchange Center

Visit one of the world’s most important diamond exchanges and learn how the diamond industry works in China.

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Article
Searching for Emeralds in Afghanistan

GIA field gemologists are a different breed. When Andy Lucas, GIA manager of Field Gemology in Carlsbad, decided to take some vacation time, he didn’t make for the usual destinations. No beaches, ski resorts, or cosmopolitan cities. Lucas instead headed off to Afghanistan, lured by deposits of fine emeralds.

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Emeralds
Article
Pardieu Shares Tales of Afghan Gem Exploration

Pardieu travels directly to the source to verify the origin of gemstones.

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GIA team at Montepuez ruby deposit
Mozambique: A Ruby Discovery for the 21st Century

Explores the geology, production, and yield of the world’s most commercially important ruby deposit.

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Rough Diamond Auctions: Sweeping Changes In Pricing and Distribution

Examines the growing percentage of rough diamonds being sold through auctions, a shift that has caused price volatility while opening up supply to more manufacturers and dealers.

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Study sample emeralds
A Preliminary Study on the Separation of Natural and Synthetic Emeralds Using Vibrational Spectroscopy

Reports preliminary findings—based on FTIR and Raman spectrometry of more than 300 samples—on distinguishing natural and synthetic emeralds using vibrational spectroscopy.

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Blue Moon, rough and cut
Study of the Blue Moon Diamond

Presents spectroscopic and phosphorescence data of the Blue Moon, a 12.03 ct Fancy Vivid blue diamond discovered at the historic Cullinan mine in early 2014.

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Argyle pink diamonds
Exceptional Pink to Red Diamonds: A Celebration of the 30th Argyle Diamond Tender

Describes the extremely rare polished pink diamonds from Australia’s Argyle mine that have been sold for 30 years through invitation-only tenders.

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Sri Lanka: Expedition to the Island of Jewels
Sri Lanka: Expedition to the Island of Jewels

Offers a firsthand look at Sri Lanka’s mining, cutting, jewelry manufacturing, and retail sectors, where tradition and innovation converge.

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Sawing bangle blanks from jadeite slabs
Article
Jadeite Manufacturing and Trading Hubs in Guangdong, China

Join a GIA team on a visit to the bustling jadeite trading centers of Guangdong Province, China. You'll observe a market understood by few Westerners, as industry leaders explain the intricate details of a gemstone that's also an integral part of the culture.

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