DIAMONDS

• Indicators of additional diamond pipes in Australia
• "Presidential" diamond cavity
• An update on diamond research
• More exploration in Tanzania
• Zimbabwe diamond find

COLORED STONES

• Agate and amethyst from Uruguay
• Amber from the Dominican Republic and the Baltic region
• Unusual aragonite
• Color-change burbankite-related mineral from Mont St. Hilaire, Qubec
• Dumortierite-in-quartz beads
• Feldspar-and-amphibole gem from Egypt
• Update on golden cultured pearls
• Sri Lanka: Current mining in Elahera
• Sri Lanka: Update on gem production
• Large taaffeite
• New joint venture in Vietnam
• Update on Vietnam gems
• Green zoisite from Pakistan

ENHANCEMENTS

• Filled diamonds marketed under new name
• Fracture filling of rough diamonds reported
• More on irradiated "black" diamonds
• Interesting treated ornamental sandstone

SYNTHETICS AND SIMULANTS

Appears on pages 268-279