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TOURMALINE     Gem Species:  TOURMALINE     Hardness:  7     Density:  2.82     RI:  1.61
 Polished slabs. Some appear to be black Onyx but thePresidium tester seemed to confirm them as Tourmaline. Not worth putting on the refractometer but my gut tells me 4 of these are Quartz.
StockID Image Color Size Cut Shape
 Quality
 Clarity
 Notes

Lot
Weight

 Lot
Size		 Price # of Lots Cart Qty
825026 black mm pear slab fair AAA 18.65ct 14 for
$30.75
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