Four Treasures Reference Database
Record No. 4261
Gem News International: Trapiche gems
Journal Article
Vertriest, W. (2020) Gem News International: Trapiche gems. Gems & Gemology, Vol. 56, No. 1, Spring, pp. 170–172.
ISBN/ISSN: 0016626X | RWHL*
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gems, trapiche gems, beryl, emerald, corundum, ruby, sapphire