Property of Pink Sapphire
Chemical composition : Al2O3, Aluminium oxide
Crystal system : Trigonal
Refractive index (RI) : 1.76-1.77
Specific gravity (SG) : 3.80-4.05
Birefringence : 0.008-0.010
Optical nature : (DR) uniaxial
Luster : Vitreous
Hardness : 9
Colour : Pink, very pale baby pink, vivid, almost magenta, intense pink
Localities : Thailand, Burma, Madagascar, Sri Lanka and Many places in Africa
Pink sapphire are most often found the inclusions inside only in the corundum. Pink sapphire with less inclusions are often polished into faceted gemstones. Importantly, purchasers should be aware of confusion between real pink sapphire and other pink gems such as rubellite, pink topaz and pink spinel.
Picture : mixed cut
Pink sapphire quality improvement enables to be done by heat treatment for its explicit color, sparkling and shining characteristics.
Picture : Rough Pink Sapphire