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Primary Stone / Labradorite Gemstone: Labradorite Gemstone Family: Feldspar Gemstone Count: 1 Carat Weight: 10.92 Gemstone Shape: Oval Primary Color: yellow Color: Yellow Treatment: No Treatment Country of Origin: Canada Composition: Natural Dimensions: 18.24 x 13.11 x 5.15 mm
Labradorite Gemological Properties: Chemical Formula: NaAlASi3O8 to CaAl2Si2O8 Sodium calcium aluminium silicate Crystal Structure: Triclinic; platy, prismatic Color: Dark grey to grey-black, with colorful iridescence. Also colorless, orange-red and brownish Hardness: 6 - 6.5 on the Mohs scale Refractive Index: 1.559 - 1.570 Density: 2.65 - 2.75 Cleavage: Perfect Transparency: Transparent to opaque Double Refraction or Birefringence: 0.008 to 0.010 Lustre: Vitreous Fluorescence: Yellow striations
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