Description
Star Iolite Sunstone 54.22ct
Description
This Star Iolite Sunstone is Natural Gemstone which is the Brown Colour, its Originates from India and its exact weight is 54.22ct. The Measurements are 24.60×19.17×16.57mm. The Shape and Cut of This Stone are Oval Cabochon. Its Graded Translucent and Clarity is Good. This 54.22ct Brown Colour Natural Star Iolite Sunstone is available for ready to ship anywhere in The World. You can also select Certification and Shipment Method as Optional.
Details
Summary No | AK12447 |
Species | Star Iolite Sunstone |
Weight | 54.22ct |
Shape/cut | Oval Cabochon |
Color | Brown |
Dimension | 24.60×19.17×16.57mm |
Clarity | Good |
Transparency | Translucent |
Origin | India |
Treatment | None |
Star Iolite Sunstone 54.22ct
Properties Of Star Iolite Sunstone
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 : Star Iolite Sunstone
Star Iolite Sunstone 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, Optical Phenomenon Effect seen in Star Iolite Sunstone is very rare Gemstone.