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Summer 1996, Volume 32, Issue 2


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Gem News


DIAMONDS

  • Diamond with a fluorescent phantom crystal
  • Tairus synthetic diamonds in jewelry

COLORED STONES AND ORNAMENTAL MATERIALS

  • Anorthosite rock with uvarovite garnet "speckles"
  • Update on porous chrysocolla-colored chalcedony
  • Chatoyant clinochlore from Russia
  • Cat's-eye diopside from Southern India
  • Garnets from Mozambique
  • Green-and-white jadeite from Russia
  • Visit to Myanma Gems Museum
  • A variegated translucent jasper from Mexico
  • An unusual morganite
  • Scottish pearls
  • Rubies from Madagascar
  • Sapphire mining in Kanchanaburi
  • Update on Tanzanite mining
  • "Golden" tourmaline from Kenya

TREATMENTS

  • Novel opal doublets from Brazil
  • Sapphires with "induced" stars

SYNTHETICS AND SIMULANTS

  • Manufactured composite material imitating jadeite
  • "Drusy" silicon, a computer-industry by-product
  • A convincing tanzanite substitute
  • "Tavalite," cubic zirconia colored by an optical coating

ANNOUNCEMENTS

  • Sixth annual Cutting Edge Awards
  • Gem-related exhibits at American Museums
  • Special synthetics exhibit at the Sorbonne

 



Appears on pages 128-140

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