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Ch. 10: Gem Cutting Engraving

Ch. 10: Gem Cutting Engraving Page of 296 Ch. 10: Gem Cutting Engraving Text size:minus plus Restore normal size   Mail page  Print this page
262                       PRECIOUS STONES.
THE ROSE.
In rose-cutting, the diamond is flat underneath; the upper and convex part is covered with a vari­able number of facets, systematically disposed around a first, of which the summit occupies the centre of the stone. If the stone bears twenty-four facets it is a "Holland Rose;" if it has but eighteen or twenty, it is a "Semi-Holland;" if the number of facets is diminished to twelve, or eight, or even six, it is an "Antwerp Rose."
Sometimes rough diamonds, found in the form of pears, are covered with little facets, retaining the general form. These stones have the name of briolettes; they come exclusively from India, and are generally pierced in the upper part with a very small hole. No lapidary in Europe could drill such a hole in these diamonds.
There are also known in commerce stones cut
Ch. 10: Gem Cutting Engraving Page of 296 Ch. 10: Gem Cutting Engraving
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