. . . "zircon"^^ . . "0"^^ . "0"^^ . "zirconium silicate"@en-us . "114253705"@en-us . . . . "a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent"@en-us . "15109127-n"^^ . "115109127"^^ . . "zircon"@en-us . . .