Synthetic Rubies by Douros: A New Challenge for Gemmologists
Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.
The Chanthaburi-Trat Gem Field, Thailand
Thailand has become the world's major source of gem ruby.
Ruby and Sapphire Production and Distribution: A Quarter Century of Change
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.