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195.75cts Rough Corundum Ruby Crystal Specimen

Currency:USD Category:Antiques Start Price:20.00 USD Estimated At:25.00 - 50.00 USD
195.75cts Rough Corundum Ruby Crystal Specimen
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195.75cts rough corundum ruby specimen with traces of red color. 62 x 36 x 19mm. Corundum is a crystalline form of aluminium oxide typically containing traces of iron, titanium, vanadium and chromium. It is a rock-forming mineral. It is also a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure.