This is a fine, pear cabochon-cut, rainbow-lustre, natural African Labradorite gemstone. It weighs 10.65cts and measures 18x13mm.
Below are some technical details:
Size:
18x13 mm
Shape:
Pear Cabochon-Cut
Colour:
Grey with Blue-Lustre
Clarity:
Opaque
Lustre:
Beautiful
Origin:
Africa
Hardness:
6 - 6.5
Specific Gravity:
2.70 - 2.74
Refractive Index:
1.55 - 1.75
Chemical Composition:
CaNa(Al,Si)AlSi2O8, Calcium Sodium Aluminum Silicate
Crystal Structure:
Triclinic
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