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The Artigas Mines in Uruguay are known for the high quality of what semi-precious stone?

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The Artigas Mines in Uruguay are known for the high quality of what semi-precious stone?
posted 6 days ago by Anil Chaurasiya
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Amethyst
Artigas is a globally important agate and amethyst mining district. The amethysts are rated exceptional in both size and colour.

answer 5 days ago by Mohammad

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