Crystal and stones » emery 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 Corundum http://www.crystalandstones.com/about-precious-stones/corundum.html http://www.crystalandstones.com/about-precious-stones/corundum.html#comments Wed, 16 Sep 2009 15:42:03 +0000 precious stones http://www.crystalandstones.com/?p=83 This mineral is a species of crystal, or crystalline alumina -an almost pure anhydrous alumina, Al2O3 -in many varieties, both of shape and colour.

The chief stone is the ruby, considered, when large, to be of even more importance and value than the diamond. There are many other red stones in this group; sapphires, [...]]]> http://www.crystalandstones.com/about-precious-stones/corundum.html/feed 0