| Andrew Ure - 1821 - 14 Seiten
...another of equal colour, transparency, purity, form, &c. isas the squares of the respective weights. **The average price of rough diamonds that are worth working, is about** L. 2 for the first carat. The value of a cut diamond being equal to that of a rough diamond of double... | |
| Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1830
...that of another of equal color, transparency and purity, is as the squares of the respective weights. **The average price of rough diamonds, that are worth working, is about** £2 for the first carat. The value of a cut diamond is equal to that of a rough diamond of double weight,... | |
| Andrew Ure - 1831 - 844 Seiten
...another of equal colour, transparency, purity, form, ike. is as the squares of the respective weights. **The average price of rough diamonds that are worth working, is about** -'-'.'_' for the first carat. The value of a cut diamond being equal to that of a rough diamond of... | |
| Luke Hebert - 1835
...another of equal colour, transparency, purity, form, &c., is as the squares of the respective weights. **The average price of rough diamonds that are worth working is about** two pounds for the first carat ; and the value of a cut diamond being equal to that of a rough diamond... | |
| Francis Lieber, Edward Wigglesworth - 1835
...that of another of equal color, transparency and purity, is as the squares of the respective weights. **The average price of rough diamonds, that are worth working, is about** £2 for the first carat. The value of a cut diamond is equal to that of a rough diamond of double weight,... | |
| Luke Hebert - 1836
...another of equal colour, transparency, purity, form, &c., is as the squares of the respective weights. **The average price of rough diamonds that are worth working is about** two pounds for the first carat ; and the value of a cut diamond being equal to that of a rough diamond... | |
| Sir Daniel Keyte Sandford, Thomas Thomson, Allan Cunningham - 1836
...of another of equal colour, transparency, and purity, is as the squares of the respective weights. **The average price of rough diamonds, that are worth working/ is about** £2 for the first carat. The value of a "cut diamond is equal to that of a rough diamond of double... | |
| Charles Frederick Partington - 1838
...that of another of equal colour, transparency and purity, is as the squares of the respective weights. **The average price of rough diamonds, that are worth working, is about '21. for** the first carat. The value of a cut diamond is equal to that of a rough diamond of double weight, exclusive... | |
| Andrew Ure - 1844
...diamond pf double weight, exclusive of the cost of workmanship. The weight and value of diamonds are **reckoned by carats of 4 grains each ; and the comparative...polished diamond of one carat must have taken one of** 2 carats, its price in the roueh state is double the square of 21., or 81. Therefore, to estimate the... | |
| Thomas Gamaliel Bradford - 1850
...of another of equal color, transpa- . rency and purity, is as the squares of the respective weights. **The average price of rough diamonds, that are worth working, is about** £2 for the first carat. The value of a cut diamond is equal to that of a rough diamond of double weight,... | |
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