Lapis Lazuli stone (Lapis Lazuli) Afghan weighing 41.077 carats

Technical details: Type: Lazurite (Lapis Lazuli) (Lapis Lazuli) weight: 41.077 carats dimensions (mm): 27.46x16.97x9.38 shape: oval cabochon (Cabouchon) color: deep blue clarity: unclassified transparency: opaque hardness: 5.0-5.5 treatment: untreated origin: Afghanistan certification: certificate from the Saudi (MT) laboratory - website (www.mtgl.com.sa) Lapis Lazuli is a dense dark blue rock, not a single mineral, and is mainly composed of the mineral lazurite (Lazurite) with varying amounts of other minerals such as pyrite (Pyrite) which appears as golden spots, and calcite (Calcite) which appears as white lines or spots. Lazurite is known for its rich deep blue color, which was historically used as a dye "Ultramarine blue".