Crystal and stones » gold

Sapphire as talisman

precious stones — Tue, 22 Jun 2010 22:09:25 +0000

The Sapphire as talisman

Sapphire, one of the earliest gems known to man, is found in riverbeds and torrents, the force of the water washing the stones from their matrix ; and to this day are still found under these conditions. In its finest quality the Sapphire is of a deep blue colour, and the [...]

Zircon

precious stones — Wed, 16 Sep 2009 16:08:31 +0000

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, [...]

Precious stones

precious stones — Wed, 16 Sep 2009 11:09:08 +0000

What constitutes a precious stone is the question which, at the onset, rises in the mind, and this question, simple as it seems, is one by no means easy to answer, since what may be considered precious at one time, may cease to be so at another.

There are, however, certain minerals which possess distinctive [...]