American Gems and Precious Stones

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U.S. Government Printing Office, 1883 - Precious stones - 1 pages
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Page 495 - The observer is deeply impressed on inspecting this locality with the enormous amount of labor which in ancient times has been expended here, The waste or debris excavated in the former workings covers* an area, which the local surveyor assured me extends by his measurement over at least twenty acres.
Page 489 - Thus a 2J carat stone was sold for $500.00, and a number of stones brought from $40.00 to over $100.00 a carat. The total sale of all the gems found, from the beginning of operations in August, 1880, to the close of 1888, amounted to about $7500.00, the yield in 1882, during which the preparatory work was done, being about $2000.00. At the time of the discovery, this was supposed to be the first occurrence of transparent spodumene; but Pisani, in the...
Page 762 - Jasper agate is found in considerable quantity at Diamond Hill, Cumberland, RI, in all shades of white, yellow, red, and green; these colors are also all intermixed in one specimen, usually mottled, and at times beautifully banded in irregular seams of white, creamy brown, greenish, and brecciated. It is found in large quantities, and although fully 1,000 pounds is taken away every year by visitors and collectors not over $100 worth is sold or polished per annum. <* "WAMSUTTA GROUP
Page 497 - ... cleavages are obtained, the writer having many such in his collection. Such are, however, still more beautiful by transmitted light. Some excellent gem effects may be obtained by encasing cut cleavages in small glass globes, placing a minute incandescent electric light beneath the cleavage. Fluorite is occasionally found shaped into ornaments by the hand of prehistoric man. Kunz has obtained specimens of such for his collection, from the mounds of Southern Illinois. The less perfect cleavage...
Page 731 - Goodyear, who had found some specimens of itacolumite 3 miles east of Placerville, but had kept them as curiosities. The gravel in the channel is .capped by lava from 50 to 450 feet in depth, and of late years is worked by steam cement mills. He says he knows of instances where fragments of broken diamonds have been found in cleaning up the batteries.
Page 751 - B, and VII, B). Smoky Quartz.— At Taylorsville and Stony Point, North Carolina, a number of clear pieces of this material have been found that cut fair stones weighing over an ounce each. In Alexander, Burke, Catawba, and adjacent counties, smoky quartz crystals which would afford fine gems are frequently met with. They are generally from 1 to 5 inches in diameter, sometimes of a citron or light yellow color, and often...
Page 495 - ... for ornamental purposes. It is easy to see these blue-green stains in every direction among these decomposed rocks, but the turquoise in masses of any commercial value is extremely rare, and many tons of the rock may be broken without finding a single stone which a jeweller, or virtuoso, would value as a gem. The observer is deeply impressed on inspecting this locality with the enormous amount of labor which in ancient times has been expended here. The waste or debris excavated in the former...
Page 728 - Virginia, in some earth which lie was digging up. It was put in a furnace for melting iron, at Richmond, where it remained at red heat for two hours and twenty minutes. It was then taken out and found to be uninjured and brighter than ever. It was valued in Eichmond at $4,000.
Page 486 - County, Montana. The Montana specimens rarely exceed one-fourth to one-half inch in length and range in color from light green, light blue, steel blue, bluish red, light red, and intermediate shades; frequently the colors mentioned will appear red or assume a reddish tinge by artificial light. They are usually dichroic and often blue in one direction and red in another. CROCIDOLITE.
Page 490 - Rose quartz occurs in large masses at Albany and Paris. Maine, Southbury, Connecticut, and at many other places in the United States; but as yet it has not been used in the arts or as a gem. At Stow, Albany, Paris, and other localities in Maine the quartz veins shade from white-transparent and opalescent — resembling hyaline quartz often without any imperfections — through faintly tinted pink and salmon into...

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