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TOPAZ.
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with little hazard, and if the color produced happens to be fine, the price is much augmented[1],
THE RED TOPAZ.
This beautiful gem, which yery seldom occurs naturally, is of afine crimson color, tinged with a rich brown; it is extremely rare, and generally taken to bea variety of ruby, for which I have seen it offered for sale. Its price, from its scarcity, is quite capricious; it has an exquisite pleasing color, very different from the glare of the artificial pink topaz.
THE BLUE TOPAZ
Is also a beautiful gem, of a fine celestial blue color. It has occurred of considerable
- ↑ Many impositions are practised in forming pink topazes. See appendix.
in common with the blue and yellow varieties of fluor; it also contains fluoric acid; which may be the cause of the change of color produced by heat.
