Lapis lazuli Firoza Opal Jewellery Ring

Lapis lazuli Firoza Opal Jewellery Ring.

Lapis lazuli Firoza Opal Jewellery Ring
By Mans Women Jewelley.
Composition

The most important mineral component of lapis lazuli is lazurite(25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2. Most lapis lazuli also contains calcite (white), sodalite (blue), and pyrite (metallic yellow). Some samples of lapis lazuli contain augite; diopside; enstatite; mica; hauynite; hornblende, nosean, and sulfur-rich löllingite geyerite.
Lapis lazuli usually occurs in crystalline marble as a result of contact metamorphism.

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