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Ch. 2: Adamas, Diamond

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The Macedonian found in the gold-mines of Philippi was also a Lasque (cucumis semini par). The Arabian resembled the Indian in all respects, but was smaller. The Andro-damas had a silvery lustre, like the Adamas, but was always square, and resembled a die in shape. Here we have the cubic crystal, the faces of which are never polished, but covered by a semi- opaque striated varnish. Lastly, the " Genchros," described as like a millet-seed, denotes the spherical, an abnormal form where ,the crystallisation radiates from the centre, preventing all artificial polish, and for that very reason designated Bort (Bastard, in Provençal), from Abortus.*
Of the six kinds into which Pliny divides the Adamas the four above described are doubtless all forms of the true Diamond. The minute size is enough to demon­strate this ; for how else could inconspicuous stones have been so highly valued—stones, too, whose minuteness can only be exemplified by the comparison to a gourd-seed or a grain of millet ? But, besides these, two kinds remain, rejected by Pliny himself as " degenerate, arid possessing nothing of the Adamas but the honour of the name." These were, the " Cyprian, of a bluish tinge (vergens in aërium colorem), most valuable as an amulet, and the Siderites of a steely splendour, and exceeding all the others in weight." Both these were Sapphires, as their blue or grey colour and greater specific gravity prove, coupled with the remark that both could be drilled by means of another diamond, i. e. a true one. It is a singular coincidence that Epiphanius (a Cyprian bishop, by the
Ch. 2: Adamas, Diamond Page of 377 Ch. 2: Adamas, Diamond
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