DIAMONDS

• More firms processing fracture-filled diamonds
• Synthetic diamonds misrepresented as Canadian rough

COLORED STONES

• Large aquamarines from Nigeria
• Clinochlore and other rare collector stones from the former Soviet Union...
• ...and other unusual gems seen at Tucson
• Phenomenal feldspars from India
• Parti-colored fluorite from Brazil
• Unusual host carvings
• Update on opal from Ethiopia
• Sapphires from Madagascar
• Sapphires and other gems from Tanzania
• Spessartine garnet from Namibia

SYNTHETICS AND SIMULANTS

• Amber simulant: Natural resin in plastic
• Update on "recrystallized" corundum
• Laser-inscribed synthetic colored stones
• Partially devitrified glass imitation of jadeite
• Iridescent hematite simulant
• Kyocera plastic-impregnated synthetic opals
• Platinum alloy as an ornamental material

INSTRUMENTATION

Appears on pages 129-139