Natural Earth Mined Blue Topaz, 19.95cwt. Unheated. 19.4x13x8.9 mm. See Video

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Topaz is the gem stone for November. It has been used as a gemstone for thousands of years. It is considered the symbol of friendship. Topaz in its natural state is a golden brown to yellow. Naturally occurring blue topaz is quite rare. , and almost all blue topaz on the market has been treated to produce that colour, as is some brown. An old English superstition says that topaz cures lunacy. (Never worked for me! :-) Topaz is the hardest of any silicate mineral, at 8 on the moh's scale.