. . . "Zirconium silicate, also zirconium orthosilicate, (ZrSiO4) is a chemical compound, a silicate of zirconium. It occurs in nature as the zircon, a silicate mineral. Zirconium silicate is usually colorless, but impurities induce various colorations. It is insoluble in water, acids, alkali and aqua regia. Hardness is 7.5 on the Mohs scale."@es . "395740339"^^ . "Zirconium silicate, also zirconium orthosilicate, (ZrSiO4) is a chemical compound, a silicate of zirconium. It occurs in nature as the zircon, a silicate mineral. Zirconium silicate is usually colorless, but impurities induce various colorations. It is insoluble in water, acids, alkali and aqua regia. Hardness is 7.5 on the Mohs scale."@es . . "Zirconium silicate"@es . . . . "Zircon"@es . "Zirconium(IV) silicate"@es . . . "Zirconium silicate"@es . . "changed"@es . . . . . . . . "Zirconium orthosilicate"@es . . "changed"@es .