| Lewis Feuchtwanger - Beads - 1838 - 192 pages
...found, sends them abroad already cut and polished en cabochon ; but very often they are cut over again on a copper wheel, with emery, and polished on a tin plate ; it receives in setting a gold foil. The value depends principally upon its intrinsic properties,... | |
| Lewis Feuchtwanger - Building stones - 1859 - 512 pages
...found, sends them abroad already cut and polished in cabochon ; but very often they arc cut over again on a copper wheel, with emery, and polished on a tin plate : they receive in setting a gold foil. The value depends principally upon its intrinsic properties,... | |
| Sourindro Mohun Tagore - Gems - 1879 - 558 pages
...assured me it was an Emerald, and not a Beryl as I suggested." The Cutting of Emerald. THE Emerald is cut on a copper wheel with emery and polished on a tin one with rotten stone. It is generally trap-cut. The object of cutting it as a brilliant, with rounded... | |
| Sourindro Mohun Tagore - Gems - 1879 - 552 pages
...assured me it was an Emerald, and not a Beryl as I suggested." The Cutting of Emerald. THE Emerald is cut on a copper wheel with emery and polished on a tin one with rotten stone. It is generally trap-cut. The object of cutting it as a brilliant, with rounded... | |
| Chemistry - 1880 - 532 pages
...worth from $100 to $200 per carat. The light shades are much less valuable than the dark. The stone is cut on a copper wheel with emery, and polished on a tin wheel with rotten stone. It is most often cut in trap shape, but if flawed, as a brilliant with rounded... | |
| Encyclopedias and dictionaries - 1888 - 966 pages
...are the Hope emerald, weighing 6 oz, and those of the Russian, Saxon, and I'apal crowns. Emeralds are cut on a copper wheel with emery, and polished on a tin wheel with rotten-stone. " In a good gem," says Mr Emanuel, " tho surface must be perfectly straight... | |
| Encyclopedias and dictionaries - 1907 - 798 pages
...are the Hope emerald, weighing 6 oz, end those of the Russian, Saxon, and Papal crowns. Emeralds are cut on a copper wheel with emery, and polished on a tin wheel with rotten-stone. " In a good gem," says Mr. Emanuel, "the surface must be perfectly straight... | |
| Pan American Union - America - 1909 - 722 pages
...brittle and comparatively soft when freshly mined, but bocomes much harder on exposure to air. The gem is cut on a copper wheel with emery and polished on a tin wheel with rotten stone. In a good stone the surface must be perfectly straight and smooth, the form... | |
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