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Ch. 2: Gemstones, Prices, Trade, Size

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40
PRECIOUS STONES.
length of eight and one-half inches. Austria claims an emerald of two thousand carats weight, an opal of seventeen ounces,
and an onyx measuring nine inches in diameter. Nearly evenmuseum comprises specimens of gem-minerals remarkable for
their' immense proportions, and some collections include
engraved gems of gigantic size ; in this list are found the
" Cameo of the Vatican," on a stone measuring sixteen inches
by twelve; the "Apotheosis of Augustus," or "Le Grand
Cameo," in the French cabinet, on a stone of thirteen inches
by eleven, and the cameo of Vienna, representing the " Coronation of Augustus," cut in a sardonyx of nine inches by eight.
Not unfrequently various kinds of vessels of considerable magnitude are carved from a single gem, the quartz varieties
affording some of the most remarkable for size.
Ch. 2: Gemstones, Prices, Trade, Size Page of 401 Ch. 3: Gemstone Collectors, Collections
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