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Synthetic Rubies by Douros: A New Challenge for Gemmologists

Henry A. Hänni, Karl Schmetzer, June 1, 1994

Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.

The Chanthaburi-Trat Gem Field, Thailand

Peter C. Keller, December 1, 1982

Thailand has become the world's major source of gem ruby.

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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