Sapphire (gem corundum of any color except red, especially blue varieties) Mineral Collection - 55×44×96 mm - 255 g - (1)

Description
Sapphire (gem corundum of any color except red, especially blue varieties) Mineral Collection - 55×44×96 mm - 255 g - (1)
Sri Lanka

Gemstone: Elephant carved sapphire
Quantity: 1
Total weight: 1275.00 ct (255 grams)
Dimensions: 96.00 x 44.00 x 55.00 mm
Colour: Green
Shape: Elephant carved
heated

General and classification
Sapphire
Chemical formula: Al2O3
Mineral class:
(and possible division) see corundum
Similar minerals Cordierite, benitoite, kyanite, indigolite (of the tourmaline mineral group), spinel, tanzanite, topaz, zircon
Crystallographic data:
Crystal system trigonal
Crystal class; symbol: ditrigonal - scalenohedral; 3 2 / m
Physical properties
Mohs hardness: 9
Density (g/cm3): 3.95 to 4.03
Cleavage: None
Fracture; tenacity Mussel, splintery, brittle
Colour: Blue; in the broadest sense all colours except red
Streak colour: White
Transparency: Transparent to opaque
Lustre: Vitreous
Crystal optic
Refractive indexes nω = 1.767 to 1.772
nε = 1.759 bis 1.763
Birefringence: δ = 0.008 bis 0.009


Registered shipping
Treatment and origin declarations are the opinion of the seller

Lot details
Number of items
1
Main Mineral/ Name Meteorite
Sapphire (gem corundum of any color except red, especially blue varieties)
Mineral Form/ Type Meteorite
Mineral Collection
Dimensions
55×44×96 mm
Weight
255 g
Origin (Country)
Sri Lanka
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