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THE Topaz of the Ancients, is the same which the Moderns call a Chrysolite, whereof we shall treat in Chap. 101, and their Chrysolite, that which Mo∣dern Jewellers call a Topaz, which is a Stone of a Golden-colour. Such are the Oriental Topaz's which are the most hard of all Stones next the Diamond. Their Colour is like Water tinged with Saffron or Rhubarb, but shining and pure. There are some
found in Europe, but as soft as Crystal, and approach somewhat on Black with a Golden-colour; if there is any one found of the Colour of pure Gold, it is ex∣traordinary, and not distinguishable from the Orien∣tal ones, but in hardness.
To imitate the Oriental ones, take two Ounces of Natural Crystal of Chap. 92, seven Ounces of Red-Lead in ••ine Powder and searced; mix the whole well together, put them into a good Crucible, wherein you leave an empty space of about an Inch deep, for fear the Matter should run over in Baking, or stick to the Cover of the Crucible in rising, and spoil the Work. Then proceed as in Chap. 94, observing the same Circumstances of Time and Fire, and you'll have an admirable Topaz-colour.