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n. A brown to colorless mineral, ZrSiO4, which is heated, cut, and polished to form a brilliant blue-white gem.

n. A mineral occurring in tetragonal crystals, usually of a brown or grey colour and consisting of silica and zirconia.

n. A crystal of zircon, sometimes used as a false gemstone.

n. A mineral consisting predominantly of zirconium silicate (Zr2SiO4) occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky-brown varieties from Ceylon are called jargon.

n. an imitation gemstone made of cubic zirconia.

n. A mineral occurring in tetragonal crystals of adamantine luster and yellowish to brownish or reddish color: its hardness is somewhat greater than that of quartz.

n. a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent

"The sands are called zircon sands because they contain sand-sized mineral zircon grains."

mineral   

jacinth    jargoon    jargon   

jacinth    jargoon    hyacinth    jargon   

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