A precious wonder of nature! A rough diamond crystal, embedded in its' original alluvial host rock is what makes this precious specimen special. The visible part of the diamond crystal measures 6.5x5.0mm overall. It displays the characteristic adamantine luster of diamond. The exposed portion of the crystal looks like a roughly octahedral shape which is the most common shape of diamond crystal. The diamond crystal is estimated to weigh over one carat. This diamond specimen was found in the region of Diamantina, Brazil. The perfect gift for your "diamond-in-the-rough!" A glass presentation box measuring 5x5x3.25 inches is included.