Argentina Lapis Lazuli Diamond White Gold Engagement Ring 2015 Fashion.
By Farzana Aamir
Composition
Lapis lazuli is a rock whose most important mineral component is lazurite[9] (25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2.[10] Most lapis lazuli also contains calcite (white), sodalite (blue), and pyrite (metallic yellow).
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