DIAMONDS

• Diamond production starts at Canada's Ekati mine.
• Financial Times Diamond Conference

COLORED STONES

• Colored stone presentations at the International Mineralogical Association meeting.
• Chalcedony with goethite inclusions from Madagascar.
• Iolite gemologically indistinguishable from feldspar.
• New features of Montana sapphires: Gold is where you find it.
• Highly translucent green serpentine from Afghanistan.
• Etch-decorated topaz.
• Red, pink, and bicolored tourmaline from Nigeria.

TREATMENTS

• On the burning of polymer-impregnated synthetic and natural opals.
• Irradiated inclusions in topaz.

SYNTHETICS AND SIMULANTS

• Obsidian imitation.
• Diffusion-treated synthetic sapphire.

Editors:
Mary L. Johnson and John I. Koivula

Contributing Editors:
Dino DeGhionno - GIA GTL, Carlsbad, California
Shane F. McClure - GIA GTL, Carlsbad, California
Emmanuel Fritsch, IMN, University of Nantes, France
Henry A. Hänni, SSEF, Basel, Switzerland
Karl Schmetzer, Peterhausen, Germany

Appears on pages 290-302