Posts Tagged ‘ greys ’

Zircon

September 16, 2009

By precious stones

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. There are several methods of obtaining the metallic element,...
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Tags: Adamantine, blues, browns, coloured stones, crystal, diamond lustre, ferric oxide, gold, greens, greys, Hardness, indigo, Klaproth, opaque, oranges, Precious stones & minerals, reds, stone hyacinth, transparent, whites, yellows, zircon, zirconia, zirconium
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Zircon

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