. Mineral Resources of the United States, 1902. DIAMOND SAWING. PRECIOUS STONES. 863 of material. As evidencing the wonderfully keen responsive businessacumen Avhich has always characterized the rough syndicate, theprice of all rough diamonds that could be improved or advanced invalue by such sawing was immediately advanced when the processbecame known. More recent)}^ certain expert cleavers, as the}^ have been called,found that they could remove an occasional part of a diamond, suchas the angle of an octahedron, by nicking the stone at a given point,and then by a sharp blow breaking off a pie
. Mineral Resources of the United States, 1902. DIAMOND SAWING. PRECIOUS STONES. 863 of material. As evidencing the wonderfully keen responsive businessacumen Avhich has always characterized the rough syndicate, theprice of all rough diamonds that could be improved or advanced invalue by such sawing was immediately advanced when the processbecame known. More recent)}^ certain expert cleavers, as the}^ have been called,found that they could remove an occasional part of a diamond, suchas the angle of an octahedron, by nicking the stone at a given point,and then by a sharp blow breaking off a piece, saving both the mate-rial and the time that would have been lost in removing the edgeor piece by polishing. Groovlmj diainondii.—A patent has been granted for a new processof grooving diamonds, these gems of course being also polished, andthe claim is made that the grooving insures a greater brilliancy. Thediamonds are sometimes cut with perfecth^ parallel grooves around astone having eight, ten, twelve, or eighteen sides. The grooving i
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