Agate ke mofuta oa silika oa microcrystalline, haholo-holo chalcedony, e khetholloang ka ho hlaka ha lijo-thollo le ho khanya ha 'mala.Bohloeki bo phahameng ba tlhaho ea Brazilian agate (97.26% SiO2) e silang libolo tsa mecha ea litaba, tse sa khathaleng haholo ebile li hanana le li-acids (ntle le HF) le solvent, libolo tsena li sebelisoa neng kapa neng ha ho hlokahala hore lisampole tse nyane li siloe ntle le tšilafalo.Mefuta e fapaneng ea libolo tsa ho sila tsa agate li fumaneha: 3mm ho isa ho 30mm.Libolo tsa mecha ea phatlalatso li sebelisoa haholo masimong a Ceramics, Electronics, Industry Light, Medicine, Food, Geology, Chemical Engineering joalo-joalo.