Crystal and stones » Black gemstones http://www.crystalandstones.com Properties of natural crystal precious stones, birthstones, gemstones, lithotherapy, crystal healing, chakras Wed, 23 Jun 2010 13:27:08 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Black gemstones http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/black-gemstones.html http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/black-gemstones.html#comments Wed, 16 Sep 2009 15:24:23 +0000 precious stones http://www.crystalandstones.com/?p=77 Black gemstones

Hardness. Specific Gravity.

Diamond 10 3.502-3.564
Garnet 6-1/2-7-1/2 3.400-4.500
Jet 3-1/2 1.348
Onyx (a variety
of Chalcedony) 6-1/2 2.598-2.610
Quartz 7 2.670
Tourmaline (not unlike
Black Resin in appearance) 7-1/4 3.024-3.300

diamant+fume herkimer+citrin pendentif+herkimer diamant+non+gemme herkimer
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