DIAMONDS

• Cathodoluminescence of yellow diamonds
• Diamond inclusions in corundum
• The diamond pipeline into the third millennium
• Mineral inclusions in large Yakutian diamond crystals
• The morphology of natural gem diamond

COLORED STONES AND ORGANIC MATERIALS

• Identification of amber by laser Raman microspectroscopy
• New Zealan 'Kauri Gum'
• Inclusion-related fluorescence zoning in amber
• New chrysoberyl deposits in India
• Gem corundum from Australia and Southeast Asia
• Bactrian emeralds
• Emerald origin
• Origin of ancient Roman emeralds
• Blue quartz from Madagascar
• Ornamental stones and other gems from Bolivia
• Cultured pearls from Indonesia
• Sapphires from northern Madagascar
• Tunduru-Songea gem fields in southern Tanzania

SYNTHETICS AND SIMULANTS

• Imitation pearls--so-called "I Pearls" from Japan
• Growth-induced imperfections and inhomogeneities in single crystals
• Surface features and growth conditions of quartz crystals
• Reversible twinning in an unusual synthetic material

TREATMENTS

• Heat treatment of garnets
• Titanium and chromium diffusion-induced star sapphires

ANNOUNCEMENTS

• New hall opens at the Smithsonian Institution
• Diamonds at the American Museum of Natural History
• New exhibits at the Cleveland Museum of Natural History
• Gems & Gemology wins ASAE award--again!

Appears on pages 298-310