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Ruby
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.
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Research
Fine Corundum, Demantoid Garnet
Gemstone Durability: Design to Display
Dyed Natural Corundum as a Ruby Imitation
The gemological properties of a new ruby imitation, produced by dyeing natural colorless to pale-colored corundum, are described.
Update on Mining Rubies and Fancy Sapphires in Northern Vietnam
Northern Vietnam began producing significant quantities of rubies and fancy sapphires in the late 1980s.
Heat Treating Corundum: The Bangkok Operation
Ruby and Sapphire from Jegdalek, Afghanistan
The 3309 cm–1 Series in Sapphire and Ruby: A Focus on FTIR Peak Position Variation
Investigates the correlations between peak positions in the 3309 cm–1 series with trace element concentrations for ruby, metamorphic and basalt-related blue sapphire, and laboratory-grown sapphire.
Update on Inclusion Scenes in Mozambican Rubies
Update on Liberian Ruby
Arzakite Inclusion in Ruby from Mogok
Ruby with Synthetic Overgrowth Lining Cavities
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
