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Garnet

The Tucson 2015 Gem Show demonstrated that there are considerably more options than just the big three (ruby, sapphire and emerald) for buyers seeking fine quality gemstones. The availability of bigger and higher quality garnets…

Contemporary Jadeite Testing

Jadeite is a sodium aluminum silicate mineral which has a polycrystalline structure. The hardness is 6.5-7 on the Mohs’ scale, the average specific gravity value is 3.33, and the refractive index is approximately 1.66. The…