Description
Iolite Sunstone Cat’s Eye Gemstone 18.47ct
Description
This Iolite Sunstone Cat’s Eye is Natural Gemstone which is the Grey Color, its Originates from India and its exact weight is 18.47ct. The Measurements are 20.04×15.33×8.57mm. The Shape and Cut of This Stone are Oval Cabochon. Its Graded Translucent and Clarity is Good. This 18.47ct Grey Color Natural Iolite Sunstone Cat’s Eye is available for ready to ship anywhere in The World. You can also select Certification and Shipment Method as Optional.
Details
Summary No | AK12904 |
Species | Iolite Sunstone Cat’s Eye |
Weight | 18.47ct |
Shape/cut | Oval Cabochon |
Color | Grey |
Dimension | 20.04×15.33×8.57mm |
Clarity | Good |
Transparency | Translucent |
Origin | India |
Treatment | None |
Iolite Sunstone Cat’s Eye 18.47ct
Properties Of Iolite Sunstone Cat’s Eye
Sunstone:
Chemical Composition: (Al,Si)4o8
Hardness: 6.0 – 6.5
Specific Gravity (Density): 2.64
Refractive Index: 1.54 – 1.55
Iolite:
Chemical Composition : (Mg,Fe)2 Al4Si5O18 [Magnesium Aluminum Silicate]
Hardness: 7.0 – 7.5
Specific Gravity (Density): 2.60 – 2.66 (g/cm3)
Refractive Index : 1.527 – 1.578 Biaxial ( – )
About Iolite Sunstone Cat’s Eye
Iolite Sunstone cats Eye is a very rare combination stone from South India, Iolite has intense and distinct pleochroism showing colors of blue, violet, smoky blue and gray when viewed from different angles. Iolites crystal structure is very similar to that of Beryl and is a member of the Beryl series of minerals. Iolite stone rarely contains inclusions of hematite plates that create a beautiful schiller effect. While Sunstone is Member of Feldspar Group which contains the Glitter caused by light reflections from tiny hematite or goethite platelets, Cat’s Eye (Chatoyancy) Optical Phenomenon Effect seen in Iolite Sunstone is very rare.