Editorial
A Fitting Conclusion to Our 80th Anniversary
By Duncan Pay, Editor-in-Chief


Our lead article discusses the sweeping changes brought to rough diamond pricing and supply through the adoption of tenders and live auctions.

Read More

Articles (4)

Trade
Trade

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

By John King, James E. Shigley, and Claudia Jannucci , Jan 30

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

Read More
Physical properties
Physical properties

Study of the Blue Moon Diamond

By Eloïse Gaillou, Jeffrey E. Post, Keal S. Byrne, and James E. Butler , Jan 30

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.

Read More
Techniques
Techniques

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

By Le Thi-Thu Huong, Wolfgang Hofmeister, Tobias Häger, Stefanos Karampelas, and Nguyen Duc-Trung Kien , Jan 30

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

Read More
 
 
View All Articles In This Issue

Regular Features

Lab notes
Lab Notes

The latest advances and findings from GIA laboratories.

View All (9)
Gem News
Gem News International

Global coverage of gem sources, notable new gem materials, and recent industry developments.

View All (13)
Book Review
Book Reviews

Your guide to the latest gem and jewelry books and other media.

View All (3)
Abstract
Letters

G&G readers respond.

View All (1)

2014
VOTE FOR THE MOST VALUABLE ARTICLE

Vote before March 4 for the Dr. Edward J. Gübelin Most Valuable Article Awards. Ballots will be entered in a drawing for a one-year print subscription to G&G.

Click here.

You Might Also Like

Resources For Retailers
learn more
Shop the Campus Store
Learn More
Exhibit: Starry Night Sapphire
Learn More
G&G Fall 2014 Edition
Learn more