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Lapis Lazuli is a deep blue color semiprecious crystal gemstone. The name Lapis derived from both Latin and Arabic where Lapis means stone in Latin and Azula, Blue in Arabic. A type of limestone, the mineral hardness of this gem is 5 to 5.5 Mohs, in general. Though described as Royal, midnight, or marine blue or indigo, in reality, the color of this stone can be best described as violet-ish to greenish-blue.
