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A decorative glass crystal about 4 cm (1.6 in) in diameter, having a facet cut often applied for gemstones. At some positions, coloured light (see rainbow colouring) can be regarded caused by the intended optical prism effect of the cut.
If gemstones or colored glass are used, the pieces need to be cut or ground into the shape of each cloison. In antiquity, the cloisonné technique was mostly used for jewellery and small fittings for clothes, weapons or similar small objects decorated with geometric or schematic designs, with thick cloison walls.
In the first decade of the 17th century, Lehmann adapted the techniques of using copper and bronze wheels to engrave gems to engrave glass. [1] Though both intaglio ( Tiefschnitt , “deep cut”) and high relief ( Hochschnitt , “high cut”) engraving on glass had been practiced since ancient times, Lehmann was the earliest modern glass ...
A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments.
But cut glass "drops", faceted in a style derived from gem cutting in jewellery, refracted and spread the light in way that was new, and were enthusiastically embraced by makers and their customers. The main skeleton of the chandelier was very often metal, but this was often all but hidden by a profusion of faceted glass pieces, held in place ...
Flint glass is fashioned into brilliants, and when freshly cut they can be surprisingly effective diamond simulants. Known as rhinestones, pastes, or strass, glass simulants are a common feature of antique jewelry; in such cases, rhinestones can be valuable historical artifacts in their own right. The great softness (below hardness 6) imparted ...