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The world's 10 most expensive stones
1. Potassium sodium silicon-boron stoneSilicon-boron potassium sodium stone is about $3000 per carat,[bai] the stone was first discovered in Canada, the color is very attractive pink, it is understood that the Mohs hardness reached about five degrees, the largest silicon-boron potassium sodium stone found in Myanmar.
Sep 24, 2024
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