SINHALITE GOLDEN BROWN 8.08 Cts NATURAL SRI LANKA LOOSE GEMSTONE – 20780

100% Natural – Not treated in any way.
Rare Collectors Gem
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Gem with High Lustre and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.

Refractive Index: 1.66 – 1.71
Hardness: 6.5
Chemical Comp: MgAlBO4
Density: 3.47
Crystal Group: Orthorhombic

Sinhalite was identified as a separate gem mineral in 1952 and Sri Lanka is a major source of this gem.

This gem is popular with collectors, belongs to the Orthorhombic Crystal group with strong pleochroism varying from greenish brown to dark brown. A highly lustrous gem.