Lazurite occurs almost exclusively in massive form without any visible crystals. The exception is the historic occurrence of Afghanistan, where this mineral is famous and highly regarded for producing outstanding rich-blue crystals unlike any other minerals. These crystals, almost always perched in a white marble matrix, are highly sought out after by mineral collectors. Lazurite crystallizes in the isometric system although well‐formed crystals are rare. Lazurite is a deep‐blue to greenish‐blue.
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