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Pulled Czochralski Dark Blue Sapphire

US$ 39.90
5 grams

Total: $199.50


ROUGH STONE DETAIL

  • Origin: Grown in Lab by Pulled Czochralski method. One of the best ways to produce top quality gems.
  • Dimensions: About 31x12x7mm
  • Grade: AAA
  • Clarity: Eye Clean
  • Shape: Rough
  • Color: Medium to Dark Blue
  • Polish: Very Good
  • Hardness: 9 (Mohs Scale)
  • Stock Postion: Available

Chemical Properties

  • Chemical Composition: Aluminium Oxide (AL2O3), (Chromium; minor component)
  • Refractive index: 1.76 – 1.77
  • Density: 3.9-4.1
  • Specific gravity: 3.58
  • Dispersion: 0.018
  • Length of Crystal: Length is up to 30-100mm and diameter is about 10-30mm