Diamonds and precious stones, a popular account of gems .. (1874)
Dieulafait, Louis, b. 1830, Sanford, Fanchon, tr · New York, Scribner, Armstrong, and Company · leaf 292
, the wooden imple-ment which supports the diamond intended to besplit; in the background is a globe of water forconcentrating the light at such points as more par-ticularly require it. From the splitter the diamond passes to thecutter. DIAMOND-CUTTING. 271 At first sight the work appears to be… … is essentially different. Instead of cutting a notchin one of the diamonds, the cutter is slowly andlaboriously grinding the two together in thatmutual manner which accomplishes the smoothingof both stones. He is putting in practice thefamous discovery which Louis de Berquem is falselysaid to have…
Precious stones · Diamonds · Gems
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