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andesine labradorite gem t - Newest pictures
gemstones.peperonity.net

☹Gemstone Andesine☹

Andesine is a red feldspargemstone, sometimes with greenish hints and a slight labradorescenteffect. Andesine is a relatively new gem on the market. It first appeared in 2003, though its exact origins were never fully disclosed. There are those who believe that a limited deposit of natural red Andesine from an alluvialsource in Congo is the origin of this material. Although this is possible, it has yet to be proven. Aside from a possible natural stock from the Congo, the material on the market today is produced in China by artificially enhancing Labradoritethrough diffusion treatmentwith copper.
Chemical Formula(Na,Ca)Al1-2Si3-2O8
ColorRed, Green, Yellow, Orange, Pink, Multicolored
Hardness6 - 6.5
Crystal System Triclinic
Refractive Index1.560 - 1.568
SG2.69 - 2.70
Transparency Transparentto translucent
Double Refraction.008
Luster Vitreous
Cleavage2,1 - basal ; 2,1 - prismatic ; 3,1 - pinacoidal.
Mineral Class Plagioclase feldspar(Also see the minerals Andesineand Labradorite))


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