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Albite is one of six species in the plagioclase feldspar series. Each species is defined by its albite and anorthite content: albite itself has the highest albite content. It is usually white, though gems are often colorless. Peristerite, an albite-oligoclase mix, has a blue sheen, like moonstone.

The best peristerite is from Canada.

Chemical Composition : Sodium calcium aluminosilicate
Cuts & Uses :

Brilliant, Mixed.

Hardness : 6
Lustre : Vitreous to pearly
Refractive Index / Birefringence :

1.54-1.55 / 0.009

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