Characterization of Blue Sapphires from the Mogok Stone Tract, Mandalay Region, Burma (Myanmar)
The Mogok Stone Tract of central Myanmar (Burma) is one of the world’s most famed sources of colored stones, particularly ruby, sapphire, and spinel.
周大福和 GIA 通过区块链向消费者提供钻石鉴定证书
Natural Blister From Entombment Of A Pearlfish Within A Pinctada Maxima Shell
Dendritic Inclusions in Cambodian Sapphire
A sapphire from Pailin, Cambodia, hosts inclusions that are unusual for this material.
Omphacite and Chromite: A "Bimineralic Inclusion" in Diamond
Two inclusions appear joined in a diamond host.
Colombian Emerald Industry: The New Generation
Cultured Pearl Update
Update on the Green Dragon Demantoid Mine in Namibia
Unheated and Unusual Colors
Supply Chain Transparency and Beneficiation
Opal from West Java, Indonesia
At the AGTA show, Rare Earth Mining Co. (Trumbull, Connecticut) displayed an unexpected material: Indonesian opal reportedly from West Java.
Fortieth Anniversary of the Belmont Mine
Update on Russian Demantoid Production
Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.
Ponderosa Sunstone Update
John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.
Interview with a Kenyan Miner and Dealer
Miriam Kamau, owner of Mimo Gems Traders Ltd. in Nairobi, transformed from an office assistant to a dealer and miner to a representative of her country on the international stage of the colored gemstone trade.
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