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Ch. 5: Gem History Properties

Ch. 5: Gem History Properties Page of 515 Ch. 5: Gem History Properties Text size:minus plus Restore normal size   Mail page  Print this page
FORM OF GEMS.
165
C.  The Elongated Brilliant facet cut, which, if the brilliant facets are on the crown elongated, and the collet has a pavilion cut, is very appropriate to long and thin stones.
D.  The Table cut, having either an uneven or conehoidal table, with one or two rows of facets, in a circular form, around it : a very useful form for seal-stones.
E.  The Double facet cut, the crown hav­ing t\vo rows of facets, and the collet the pavilion form ; this cut is well adapted to such stones as require the concealment of any faults, flaws, or fissures.
F.  The Cabochon cut, is either flat, convex, or double convex—that is, arched ; it may be on both
sides, or only on one. This cut is particularly applicable for semi-transparent gems, or those which display their j>eculiar colors, such as the opal, moonstone, »fee. ; or collect the light in a small space, on one or several points, according to the convexity they have received. The cabo­chon cut may have one, two, or more rows of facets, and opaque stones receive with ad­vantage the facets over the whole surface. Garnets, for instance, which are generally of a dark color, are cut en cabochon, the lower plane excavated in a circular form, and the upper plane all around with facets. Other gems, the interior faults of which cannot be concealed, may be improved by this cut, giving them more transparency, vividness of color, and a greater, degree of fire.
A judicious choice of the form in which any particular gem shall be cut, depends on the skill and discrimination of the artist.
Ch. 5: Gem History Properties Page of 515 Ch. 5: Gem History Properties
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