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Summer 2017 Gems & Gemology

Summer 2017 G&G: Russian Diamonds and PL Mapping of Synthetic Diamonds, Plus Sapphire Inclusions Chart

Jennifer-Lynn Archuleta, August 7, 2017

A summary of the Summer 2017 issue of Gems & Gemology.

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Cambodian-Thai Ruby

A Study of Rubies from Cambodia and Thailand

Supharart Sangsawong, Wim Vertriest, Sudarat Saeseaw, Vincent Pardieu, Jonathan Muyal, Charuwan Khowpong, Ungkhana Atikarnsakul, and Vararut Weeramonkhonlert, August 7, 2017 Topics: Ongoing Research

A report from the GIA Laboratory in Bangkok analyzing 41 Cambodian-Thai rubies.

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A worker uses a light to sort through several piles of rough emeralds.

Cautious Outlook for Fall; Gemfields Accedes to Takeover

Russell Shor, July 17, 2017

Major diamond producers approach summer and early fall sales periods with caution. Plus: Largest shareholder takes over Gemfields.

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Miners, working in a row along a body of water, use hand sieves to sift gravel.

International Group Sets Sights on Sustainable Gemstone Mining

Russell Shor, July 17, 2017

Organization for Economic Cooperation and Development reviews issues on sustainable mining practices and increasing returns for artisanal miners.

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The 59.60 ct mixed-cut oval CTF Pink star diamond is displayed on a woman’s hands.  It is wider than her ring finger.

Spring 2017 Auction Updates: The Most Expensive Gem Ever and Other Records

Russell Shor, July 17, 2017

The spring 2017 auction season saw two important price records fall and solid, if not rising, prices for top gems across the board.

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2017 Las Vegas Trade Spotty, Designers and Diamonds Lead

Russell Shor, June 28, 2017

Designers respond to market trends, demand for diamonds better than expected. Plus: Holiday season diamond marketing campaign gets funding boost.

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Tips From the Bench
How to Modify a Goldsmith Hammer

Compiled by GIA’s Jewelry Manufacturing Arts Instructors

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The First Point of Reference for Gems and Jewelry

Located on GIA's Carlsbad campus, The Richard T. Liddicoat Gemological Library and Information Center is the largest, most complete library of its kind.

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Summer 2017 Gems & Gemology
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