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Artikel Crusher Bahasa Tunisia

Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula cual6po44oh84h2o.It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of years owing to its unique hue.Like most other opaque gems, turquoise has been.

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