Sillimanite Rare Gemstone 3.17ct
This Sillimanite is Natural Pairs Gemstone Which is Greenish Yellow Colour, it’s Originates from India and it’s Exact Weight is 3.17ct the Measurements are 10.50×8.20×4.98mm . The Shape and Cut of This Stone is Oval Mixed Cut It’s Graded Transparent and Clarity is Excellent. This 3.17ct Greenish Yellow Natural Sillimanite Gemstone is available for Ready to Ship anywhere in The World. You Can also Select Certification and Shipment Method as Optional.
|Shape/cut||Oval Mixed Cut|
Sillimanite Gemstone 3.17ct
Properties Of Sillimanite
Chemical Composition: Al2SiO5 [Aluminum Silicate]
Hardness: 6.5 – 7.5
Specific Gravity (Density): 3.23 – 3.24
Refractive Index: 1.653 – 1.684
About: sillimanite Gemstone
Sillimanite (also known as Fibrolite) is a polymorph with Andalusite and Kyanite. A polymorph is a mineral that shares the same chemistry with another, or other, minerals but has a different crystal structure. Sillimanite is the rarest of the three trimorphs. Sillimanite is mostly known as a cat’s eye gem when in its fibrous, massive form, but beautiful, clean faceted gems are also available although faceted gems are rare because clean Sillimanite is scarce and difficult to cut.
Sillimanite is found in many locations worldwide but gem quality crystals are quite rare. The only sources of gem quality Sillimanite crystals are Orissa, India; Mogok, Myanmar (Burma); Ratnapura, Sabaragamuwa Province, Sri Lanka