Summer 1990 Gem News International
Scientists Research Material as Hard as Diamond
Malaysia Diamond Plant
Botswana Beats Target
Soviet-Singapore Joint Venture
New Area in Angola to be Mined
Argyle Cutting School Near Beijing
Kimberlite Find in the U.S.
Diamond-Cutting Industry in Sri Lanka
Tanzania Intensifies Mineral Search
Prospecting in Botswana
Colored Stones
Assembled "Plume" Agate
Apatite "From Paraiba" and Apatite Purchased as Emerald
Brazilian Chrysoprase
Major Jade Deposits in Japan
Attractive Chatoyant Assembled Opal
Peridot Mining Update
California Quartz Update
Unusual Pseudomorph
Rubies from Vietnam?
Rock-like Material with Play-of-Color
Cat's-Eye Topaz
The Discovery of the Paraiba Tourmaline Mine
Tourmaline Doublets
"Treasure" Postage Stamp
Synthetics and Simulants
Plastic Cameo Imitations
Imitation Emeralds from Southern Africa
Imitation Rhodochrosite Beads
Announcements
Tiffany & Co. Donation to Smithsonian
Donation of Citrine to Natural History Museum
GemFire Exhibit at Cleveland Museum
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