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Sec. I, Ch. 4: Working of Precious Stones

Sec. I, Ch. 4: Working of Precious Stones Page of 366 Sec. I, Ch. 4: Working of Precious Stones Text size:minus plus Restore normal size   Mail page  Print this page
3 0                 The Working of Precious Stones.
2—THE ROSE.
This form, which has been in use since 1520, but is now quite out of fashion, is fancifully supposed to resemble an opening rose-bud. It is chosen when the loss to the stone would be great if the Brilliant cut were selected. The characteristic of the Rose is that it is flat below, and forms a hemisphere or low pyramid above, covered with small facets. The facets are in two rows : those in the upper row are called star-facets ; those in the lower diagonal facets. In the centre there are generally six facets of triangular shape. A circular stone is best for the Rose the facets being more effectively brought out, and more easily polished than in a flat-shaped stone.
Although the Rose gives out a strong fire, and sends its rays as far as a Brilliant, yet, in the latter, the play of light is more remarkable, because the stone is deeper and the facets exactly correspond, thus making the prismatic colours more distinct. A Rose Diamond has very little value at the present day.
The number of facets, together with their position, decides the name of the Rose. A Dutch Rose is constituted of twenty-four facets ; the Rose Recoupée of thirty-six ; and the Brabant Rose of twelve or even fewer, only less raised than the Dutch.
3.—INDIAN CUT. This has an upper part, lower part, and girdle. Its most frequent form is that of a single-cut Brilliant. In consequence of the small effect produced by this form it is generally re-cut to meet European requirements, but this operation is usually attended with a very great loss of weight to the stone ; the natives always cutting the stone for weight and not for brilliancy.
Sec. I, Ch. 4: Working of Precious Stones Page of 366 Sec. I, Ch. 4: Working of Precious Stones
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