Crystal and stones » greys 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 Zircon http://www.crystalandstones.com/about-precious-stones/zircon.html http://www.crystalandstones.com/about-precious-stones/zircon.html#comments Wed, 16 Sep 2009 16:08:31 +0000 precious stones http://www.crystalandstones.com/?p=99 Zircon appears to have been first discovered by Klaproth in 1789, in the form of an earth, and six years later he found that the stone hyacinth contained a similar substance, both having the formula, ZrSiO4, and both having as their colouring agent ferric oxide.

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