• Natural Tanzanite Loose Gemstone

    Very nice Loose Tanzanite Gemstone. General Tanzanite info     Color: blue, violet blue, green, yellow, brownish     Hardness: 6,5 - 7     Refractive index: 1.69 - 1.70     Density: 3.35 - 3.38     Chemical composition: Ca2Al3(O/OH/SiO4/Si2O7)     Crystal structure: orthorhombic     Origins: Tanzania The most valued tanzanites (zoisites) are typically vivid, violet-blue crystals with greenish or orangey stones being rare. Heat treatment is applied to enforce the violet color component.
    AU $120.00
    or Best Offer
  • VERY RARE 9x7mm OVAL CABOCHON-CUT DEEP PURPLE/BLUE NATURAL TANZANITE (APP )

    This is a very rare, stunning purple/blue, oval cabochon-cut, natural Tanzanite gemstone. It weighs 2.55cts, measures 9x7mm, has eye-visible inclusions throughout and minimal translucency. Tanzanite is already one thousand times rarer than diamonds and given that it is only 6.5 on the Mohs scale, many pieces are accidentally destroyed.
    AU $26.29
    From United Kingdom
    Free postage
  • VERY RARE 10x8mm OVAL CABOCHON-CUT NATURAL TANZANITE GEMSTONE (APP )

    This is a very rare, purple/blue, oval cabochon-cut, natural Tanzanite gemstone. It weighs 3.75cts, measures 10x8mm and has eye-visible inclusions throughout. Tanzanite is already one thousand times rarer than diamonds and given that it is only 6.5 on the Mohs scale, many pieces are accidentally destroyed.
    AU $24.15
    From United Kingdom
    Free postage
  • 1.335CTS MIND BOGGLING AMAZING BLUE NATURAL TANZANITE OVAL LOOSE GEMSTONES

    Shape OVAL. Color BLUE. Market Value. CLARITY SCALE. INCLUSIONS FREE. INCLUSIONS VISIBLE TO NAKED EYES. Carat Weight 1.335 CTS. Origin TANZANIA.
    AU $26.41
    0 bidsEnding 29 Aug at 15:45 AEST5d 22hFrom Thailand
  • 1.260 CTS GORGEOUS AMAZING BLUE NATURAL TANZANITE OVAL LOOSE GEMSTONES

    Shape OVAL. Color BLUE. Carat Weight 1.260 CTS. Market Value. CLARITY SCALE. INCLUSIONS FREE. Untitled Document. Origin TANZANIA.
    AU $19.46
    0 bidsEnding Saturday at 4:43 AEST2d 11hFrom Thailand

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