Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide Al2O3 with trace amounts of elements such as iron, titanium, chromium,copper, or magnesium.
Category: Oxide mineral
Formula: Aluminium oxide, Al2O3
Crystal system: Trigonal
Crystal class: Hexagonal scalenohedral
Mohs scale hardness: 9.0
Luster: Vitreous
Specific gravity: 4.0 ~ 4.1
Sapphire is the birthstone for September
NATURAL BLUE SAPPHIRE
Shape : Ovel
Dimension : 9.15mm x 7.30mm x 5.51mm
Weight : 3.06Cts
Clarity : SI
Colour : Cornflower Blue
Transparency : Transparent
Treatment : Unheated/Natural
Origin : Sri Lanka
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