Diamonds and precious stones, a popular account of gems .. (1874)
Dieulafait, Louis, b. 1830, Sanford, Fanchon, tr · New York, Scribner, Armstrong, and Company · leaf 298
of these polishers seem of little usecompared with their sense of touch, which has beenexquisitely educated. It is by the instinct of theirfinger-ends that the point of the diamond—keptconstantly wet with mingled diamond-dust andolive-oil—is adjusted with determinate exactness of DIAMOND-CUTTING.… … Fig. T20.—Instruments used in Polishing. the polishing art seems to be one requiring littleskill or intelligence, but to acquire proficiency inthe work requires years of assiduous toil. From generation to generation the trade hasbeen carried on, and the patient and monotonoustoil and technical…
Precious stones · Diamonds · Gems
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