Product details
100% Natural – Not treated in any way.
Rare Collectors Gem
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Ideal for Designer Jewelry
Gem with High Lustre and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
Refractive Index: 1.716 – 1.731
Hardness: 4.5 – 7.0
Chemical Comp: AL2SIO5
Density: 3.56 – 3.68
Crystal Group: Triclinic
Kyanite comes mostly in light to dark blue and also in green, brown or colorless. The striking feature is that hardness varies with direction. The Fine Blues may be confused with Spinel or Blue Sapphire.
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