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Yellow diamond 17.88 ct., in tweezers, in front of selection of white octahedra, 34.11 ctw. These diamonds came from Kao Mine, Lesotho.

Rough Diamond Auctions: Sweeping Changes In Pricing and Distribution

Russell Shor, January 30, 2015

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.

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

John King, James E. Shigley, and Claudia Jannucci, January 30, 2015

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

Sri Lanka: Expedition to the Island of Jewels

Andrew Lucas, Armil Sammoon, A. P. Jayarajah, Tao Hsu, and Pedro Padua, October 31, 2014

Offers a first-hand look at Sri Lanka’s mining, cutting, jewellery manufacturing and retail sectors, where tradition and innovation converge.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Summer 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

Ruby and Sapphire Production and Distribution: A Quarter Century of Change

Russell Shor and Robert Weldon

During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges.

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