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Ch. 10: Gem Cutting Engraving

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	DIAMOND-CUTTING. 259

	monds are cut, the brilliant and the rose, both of them subordinate, in the first place, to the thickness of the stone. To each of these two types is attached a number of derivative and more simple forms.



	The starting point for the modern diamond, as for the ancient Indian form, is the simple octa-



	hedron. The following is the method employed in forming the octahedron into a brilliant:—

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