| en | en | |
| hyacinth | Zircon \Zir"con\, n. [F., the same word as jargon. See {Jargon} a variety of zircon.] 1. (Min.) 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}. [1913 Webster +PJC] 2. an imitation gemstone made of {cubic zirconia}. [PJC] {Zircon syenite}, a coarse-grained syenite containing zircon crystals and often also el[ae]olite. It is largely developed in Southern Norway. [1913 Webster] |
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