This is an octagon-facet, strong-blue, natural Kenyan Kyanite gemstone. It weighs 0.65cts and measures 6x4mm.
Below are the technical details:
Size:
6x4 mm
Shape:
Octagon-Facet
Colour:
Strong-Blue
Clarity:
SI-2
Lustre:
Ravishing
Origin:
Kenya
Hardness:
4.5-5
Specific Gravity:
3.5-3.7
Refractive Index:
1.71-1.73
Chemical Composition:
Al2SiO5
Crystal Structure:
Triclinic
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