Crystal and stones » idocrase http://www.crystalandstones.com Properties of natural crystal precious stones, birthstones, gemstones, lithotherapy, crystal healing, chakras Sat, 28 Jan 2012 13:06:41 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Rhodonite to Nephrite http://www.crystalandstones.com/physical-properties/isolate-gemstones/group-d-rhodonite-nephrite.html http://www.crystalandstones.com/physical-properties/isolate-gemstones/group-d-rhodonite-nephrite.html#comments Wed, 16 Sep 2009 14:15:37 +0000 precious stones http://www.crystalandstones.com/?p=37 Group D. -Stones whose specific gravity lies between 3 and under 3.50.

Rhodonite 3.413 and occasionally to 3.617 Garnets 3.400 ” 4.500 Epidote 3.360 ” 3.480 Sphene 3.348 and occasionally to 3.420 Idocrase 3.346 ” 3.410 Olivine 3.334 ” 3.368 Chrysolite 3.316 ” 3.528 Jade 3.300 ” 3.381 Jadeite 3.299 Axinite 3.295 Dioptase 3.289 Diopside [...]]]> http://www.crystalandstones.com/physical-properties/isolate-gemstones/group-d-rhodonite-nephrite.html/feed 0 Specific gravity of gemstones http://www.crystalandstones.com/physical-properties/specific-gravity.html http://www.crystalandstones.com/physical-properties/specific-gravity.html#comments Wed, 16 Sep 2009 13:53:09 +0000 precious stones http://www.crystalandstones.com/?p=23 The fixing of the specific gravity of a stone also determines its group position with regard to weight; its colour and other characteristics defining the actual stone.

This is a safe and very common method of proving a stone, since its specific gravity does not vary more than a point or so in different [...]]]> http://www.crystalandstones.com/physical-properties/specific-gravity.html/feed 0