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Summer 1994, Volume 30, Issue 2


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Gem News


DIAMONDS

  • Argyle upgrades operation
  • De Beers's rough diamond sales up
  • Diamond pipes located outside Canada's "Corridor of Hope"
  • More evidence that Wisconsin diamonds come from Canadian pipes
  • Update on Ghana production
  • Russia offers rough for sale...
  • ...and develops diamond-cutting equipment
  • Production plant upgrade for Zimbabwe
  • Near-colorless Russian synthetic diamond examined

COLORED STONES

  • Amber marketed with photomicrography
  • Basel Fair highlights
  • Fluorite from California
  • Gem artistry knows no boundaries
  • Green gems from Australia
  • Myanmar liberalizes gem trading
  • Freshwater pearls from Bangladesh
  • Tiger's-eye quartz production record in South Africa
  • Cat's-eye sillimanite from Orissa, India
  • "Wagon wheel" tanzanite
  • Bicolored topaz
  • "Zebra" stones from Australia

ENHANCEMENTS

  • New emerald treatment/polishing systems from Israel

SYNTHETICS AND SIMULANTS

  • New emerald imitation
  • Kimberley expands product line
  • Minute "machine-cut" synthetics
  • Faceted synthetic opal
  • Bright yellow "pulled" synthetic sapphires

ANNOUNCEMENTS

Appears on pages 122-132

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