Jet (gemstone)
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Jet is a type of lignite, the lowest rank of coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pr
Sample of unworked jet, about 15 mm long
A large piece of jet from Whitby
Statuette of Saint James. Jet. Santiago De Compostela, Spain. ca.1410. Overall: 8 3/16 in. (20.8 cm). Metropolitan Museum.
Three views of a prehistoric pendant in lignite/jet; Magdalenian culture (17,000–10,000 BC), from the Marsoulas cave, Marsoulas, Haute-Garonne, France
Gemstone
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A gemstone is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments. Certain rocks and occasionally organic materials that are not minerals may also be us
Jet (gemstone)
…Jet is a type of lignite, the lowest rank of coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pressure. The English…
A collection of gemstone pebbles made by tumbling the rough stones, except the ruby and tourmaline, with abrasive grit inside a rotating barrel. The largest pebble here is 40 mm (1.6 in) long.
Spanish emerald and gold pendant at Victoria and Albert Museum
Enamelled gold, amethyst, and pearl pendant, about 1880, Pasquale Novissimo (1844–1914), V&A Museum number M.36-1928
A diamond cutter in Amsterdam