We now arrive at the point where it is necessary to discuss the manufacture and re-formation of precious stones, and also to consider a few of the tests which may be applied to all stones. These are given here in order to save needless repetition; the tests which are specially applicable to individual stones...
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Detect imitation from natural gemstones
Testing precious stones
September 16, 2009
By precious stones
Tags: aluminium, ammonia, artificial diamonds, carbonate, chemical properties, chemically-charged, cleavage, crystalline structure, diamond, dichroscope, doublet, facets, genuine, glass, hydrofluoric acid, Imitations, jewels, lapidary, minerals, natural stones, powder, Precious stones & minerals, quartz, Rothschild, specific gravity
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