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Ruby
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.
See Gem As
Tools
Research
Spring 1991 G&G Lab Notes
Gemstone Durability: Design to Display
"Modern" Jewelry: Retro to Abstract
Carbon Dioxide Fluid Inclusions as Proof of Natural-Colored Corundum
An important clue in identifying natural-colored corundum is the presence of carbon dioxide fluid inclusions.
A Survey of the Gemstone Resources of China
Natural Rubies with Glass-Filled Cavities
The Rubies of Burma: A Review of the Mogok Stone Tract
A review of the history of this area, its geology, and the mining methods that have predominated.
The Chanthaburi-Trat Gem Field, Thailand
Thailand has become the world's major source of gem ruby.
Sri Lanka: The Gem Island
An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
