Diamonds, pearls and precious stones : where they are found, howcut, and made ready for use in the jeweler's art, their composition and value (1913)
Smith, Marcell Nelson, 1854- · Boston, Mass. : Printed for Smith Patterson Co. by Atlantic Print. Co. · leaf 53
alloused by the hot metal to acondition almost like that of leather. After each facet has been polished the dia-mond must be removed and reset before a newfacet can be begun. The patent dop, inventedabout seventeen years ago, which allows thestone to be set at the desired angle and heldby clamps,… … THE DIAMOND POLISHERS WHEEL THE WORKMAN IS ADJUSTING THE dop CONTAINING A DIAMONDPREPARATORY TO POLISHING DIAMOND CUTTING 33 old-fashioned dop of soft metal must still beused. By a perfect diamond is meant in the trade The Perfecta diamond without flaw or spot which can be Diam™ddiscovered by using…
Precious stones · Gems · Diamonds · Pearls
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
