Agate waa noocyo kala duwan oo microcrystalline ah oo silica ah, gaar ahaan chalcedony, oo lagu garto fiicnaanta hadhuudhka iyo dhalaalka midabka.Nadiifinta sareeysa ee agate Brazilian ah (97.26% SiO2) shiidida kubbadaha warbaahinta, aad u adkeysi badan u leh una adkeysi u leh asiidhka (marka laga reebo HF) iyo dareeraha, kubbadahaas waxaa la isticmaalaa mar kasta oo tiro yar oo muunado ah loo baahan yahay in la shiido iyada oo aan wasakh ahayn.Cabbirrada kala duwan ee kubbadaha shiida ee agate ayaa diyaar ah: 3mm ilaa 30mm.Kubadaha warbaahinta wax lagu shiido waxaa si weyn loogu dabaqaa dhinacyada Ceramics, Electronics, Industry Light, Medicine, Food, Geology, Engineering Engineering iyo wixii la mid ah.