Spring 1996 Gem News International
Diamonds
Matrix Diamond Specimens from China and Russia
Synthetic Diamonds Are in the Marketplace
Synthetic Moissanite as a Diamond Simulant
Colored Stones
Color-Change Garnet
Heliodor from Tajikistan
"Leopard Opal" from Mexico
Cultured Abalone Pearls
Update on Namibian Spessartine
Large Taaffeite Crystal from Sri Lanka
Tanzanite Beads
Gem Materials from the New Locality at Tunduru, Tanzania
Enhancements
Update on Polymer-Impregnated Malachite
Synthetics and Simulants
Beryl Triplets Imitating Paraiba Tourmaline
Faceted Quartz Construct
MORE FROM THE 25TH INTERNATIONAL GEMMOLOGICAL CONFERENCE
Diamonds
Fingerprints of Natural Diamonds: Observations with Cathodoluminescence
Colored Stones and Organic Materials
Mineral Inclusions in Quartz
Montana Sapphires
Sapphires and Rubies from Laos
Enhancements
Durability of Polymer-Impregnated (B-Type) and Natural Jadeite
Instrumentation
Infrared Spectroscopy of Thai Rubies and Sapphires
Infrared Spectroscopy Distinguishes Synthetic from Natural Emerald and Quartz
Miscellaneous
Gems from Archeological Excavations in Rome (Crypta Balbi)
Gems in a Visigoth Treasure
Announcements
Treasures of Mexico Exhibit at the Houston Museum
To view the full section, download the PDF above.
