Two Black Non-Nacreous Bead Cultured Pearls from Pinctada margaritifera
Four-Rayed Star Chrysoberyl
An Extraordinarily Large Cat’s-Eye Emerald
The Tokyo laboratory examines a 126 ct cat’s-eye emerald from Brazil.
A Partially Hollow Natural Blister Pearl Filled with Foreign Materials
A very large baroque white pearl is further examined in the Mumbai laboratory due to its suspicious heft.
A Closer Look at Internal Etch Channels in Diamond
The Carlsbad laboratory reports on a Fancy Deep brownish yellowish orange diamond featuring trigons within subsurface etch channels.
A “Cobalt Blue” Gahnospinel
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