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Why Buy Lapis Lazuli Stone From GemFame?
We Sell High Quality Lapis Lazuli Stone in reasonable price, We have various types of Sizes, Shapes, Weight, Cut, Lots, Pairs and Various Origins. We Ship Through Reputed Courier Service to Deliver Your Order within Timeline, We also Provide 30 Days Replacement / Refund for All Products.
About: Lapis Lazuli
Lazurite (Lapis Lazuli) is one of the members of the Feldspathoid group of minerals that includes Cancrinite, Haüyne, Lazurite, Leucite, Nepheline and Sodalite. Minerals with chemistries that are close to those of the alkalai Feldspars, but are poor in silica (SiO2) content, are called Feldspathoids. Lazurite is also a member of the Sodalite group of minerals that includes Hackmanite, Haüyne and Tugtupite. Lazurite could be considered a Sulphur rich form of Haüyne. Lazurite crystals are rarely found however. It is more commonly found combined with other minerals as a rock called Lapis Lazuli, or just Lapis. Lazurite and Lapis are two separate things; Lazurite is a mineral and Lapis Lazuli is a rock composed of many different minerals; but we are grouping them together on this page since they are so closely related. Lapis stone contains mostly massive forms of Lazurite combined with Haüyne, Sodalite, Nosean, (all members of the Sodalite group of minerals) and white Calcite, Pyrite, and other minerals. The Calcite and Pyrite give Lapis a very attractive look and the presence of Pyrite distinguises Lapis from its blue cousin – Sodalite rock, which lacks Pyrite.
The name Lazurite is often confused with another blue mineral, the phosphate mineral Lazulite. Although the names are similar, their crystal habit is very different. Lazurite is very rarely found as distinct crystals and Luzulite has good crystal habit and vitreous luster. The carbonate mineral Azurite has a very similar color to Lazurite but is associated with the green carbonate mineral Malachite and reacts to acids.
Lapis Lazuli Stone has been mined for centuries from a source still in use today in the remote mountain valley of Kokcha, Afghanistan. Although there are other sources of Lapis worldwide, Afghanistan still produces the finest quality material.
Properties of lapis lazuli stone
Chemical Composition :Na6Ca2[S,SO4,Cl2)2lAl6Si6O24] (Sodium Calcium Aluminum Silicate)
Hardness : 5.5Moh
Specific Gravity (Density) : 2.38 – 2.42 (g/cm3)
Refractive Index : 1.50 – 1.522 Isotropic