Spring 2000 Gem News International
Colored Stones and Organic Materials
Amphiboles are Not Necessarily Jade
Chitons in Jewelry
Unusual Copal
Newly Commercial Emerald Deposits in Colombia (La Pita and Polveros)
Some New Examples of Drusy Hematite
Orbicular Jasper from Madagascar
Colorful Nephrite
Tahitian and Australian “Keshi” Pearls
Pyritized Ammonite from Russia, Sliced in a New Way
An Update on Ruby and Sapphire from Chimwadzulu Hill, Malawi
Another Locality in Paraíba for Cuprian Elbaite
Tugtupite and Other Gem Materials from Greenland
Large Faceted Zircon
Also Seen at Tucson (Including Gems & Gemology references)
Pink and blue Madagascar sapphires (Summer 1999, Gem News, pp. 149-150)
Nigerian pink tourmaline and rubellite (Winter 1998 Gem News, pp. 298-299)
Spessartine (Spring 1999 Gem News p. 55; Winter 1999 Gem News, pp. 216-217)
Multicolored sunstone from Oregon (Summer 1997 Gem News, p. 145)
Russian demantoid garnets (Mattice et al., Fall 1999 G&G, pp. 151-152)
Blue opal from Peru (Summer 1991, Gem News, pp. 120-121)
Treatments
Moonstone with Dichroic Backing
New Hues of Dyed Freshwater Cultured Pearls
Heat-Treated Rubies: Glass or not Glass?
Silicon Coating of Drusy Materials
Synthetics and Simulants
Bicolored Synthetic Beryl, Resembling Tourmaline
Miscellaneous
"Floating Diamonds” in Jewelry
Bismuth Egg
Announcements
GIA on the Internet
Faceter’s Symposium 2000
GANA Exhibit in Los Angeles
Jewelry 2000
Tourmaline 2000
Gemstones at Upcoming Scientific Meetings
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