Crystal and stones » Oriental Topaz 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 Sapphire http://www.crystalandstones.com/about-precious-stones/sapphire.html http://www.crystalandstones.com/about-precious-stones/sapphire.html#comments Wed, 16 Sep 2009 15:48:37 +0000 precious stones http://www.crystalandstones.com/?p=87 The Sapphire is not so easy to imitate, as its hardness exceeds that of the ruby, and imitations containing its known constituents, or of glass, are invariably softer than the natural stone.

As before remarked, almost any form of corundum other than red is, broadly, called sapphire, but giving them their strictly correct designations, [...]]]> http://www.crystalandstones.com/about-precious-stones/sapphire.html/feed 0 Yellow Stones http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/yellow-stones.html http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/yellow-stones.html#comments Wed, 16 Sep 2009 15:02:53 +0000 precious stones http://www.crystalandstones.com/?p=61 Yellow Stones

Hardness. Specific Gravity.

Amber 2-1/2 1.000 Beryl 7-3/4 2.709-2.810 Chrysoberyl 8-1/2 3.689-3.752 Chrysolite 6-7 3.316-3.528 Corundum (the yellow variety known as “Oriental Topaz”) 9 3.90-4.16 Diamond 10 3.502-3.564 Garnets (various) 6-1/2-7-1/2 3.4-4.5 Hyacinth (a form of Zircon) 7-1/2 4.7-4.88 Quartz (Citrine) 7 2.658 Sapphire 9 4.049-4.060 Spinel 8 .614-3.654 Topaz (for “Oriental [...]]]> http://www.crystalandstones.com/imitation-gemstones/gemstones-colours/yellow-stones.html/feed 0