Gemstone used in intaglios
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AnswerCrossword Clue
ONYXGemstone used in intaglios
JADEGemstone used in Chinese carvings
grossulara garnet containing calcium and aluminium, occurring in grey, pinkish, or yellow-green crystals and used as a gemstone
epidotea yellowish-green mineral Ca2(Al,Fe)3Si3O12OH usually occurring in grains or columnar masses and sometimes used as a gemstone
grossularsGROSSULAR, a garnet containing calcium and aluminium, occurring in grey, pinkish, or yellow-green crystals and used as a gemstone
yaga synthetic yttrium aluminum garnet of marked hardness and high refractive index that is used especially as a gemstone and in laser technology
euclasea mineral that consists of a brittle silicate of beryllium and aluminum in pale yellow, green, or blue prismatic crystals and is used especially as a gemstone
tourmalinesA brittle gray or black mineral that occurs as prismatic crystals in granitic and other rocks. It consists of a boron aluminosilicate and has pyroelectric and polarizing properties, and is used in electrical and optical instruments and as a gemstone
tourmalineA brittle gray or black mineral that occurs as prismatic crystals in granitic and other rocks. It consists of a boron aluminosilicate and has pyroelectric and polarizing properties, and is used in electrical and optical instruments and as a gemstone