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Ruby
Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

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Tools
Research
“Diffusion Ruby” Proves to be Synthetic Ruby Overgrowth on Natural Corundum
A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years.
Liberian Ruby
A trip to a rural Liberian diamond mining community results in a newly discovered source of corundum.
Wheel of Light’s Mesmerizing Optics
Afghan Emerald, Tajik Ruby, and Clarity-Enhanced Tourmaline
Rose Channels in Ruby
Update on Inclusion Scenes in Mozambican Rubies
Update on Liberian Ruby
Arzakite Inclusion in Ruby from Mogok
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.





