Waxa laga helay meelo yar oo ku yaal koonfur-galbeed ee Maraykanka iyo Mexico, agate dab-damis ah waa mid aad u khafiif ah oo dahabi ah oo dahabi ah ilaa agate maariin ah oo casaan ah oo leh qaab dhismeed qaabaysan oo botryoidal ah.
Dabeecadda botryoid ama dabeecadda macdanta, oo sidoo kale loo yaqaanno mamillary ama kalyaha, waa mid ay macdantu leedahay qaab dibadeed oo ka kooban qaybo badan oo wareegsan, oo loogu magac daray botryskii hore ee Giriigga, taas oo macnaheedu yahay " farabadan canab".
Mid kasta oo ka mid ah lakabyada gaarka ah ee agate dabka waxaa lagu dahaadhay birta hydroxide macdanta goethite, taas oo bixisa midabka brown.
Maxaa ka dhigaya agate dabka si aad u qurux badan waa in daaha aadka u khafiifka ah ee goethite ay kiciyaan iridescence midabyo badan, oo u badan casaan, oranji dahab ah iyo cagaar, laakiin mararka qaarkood guduud iyo buluug.
Agates dabka tayada sare leh waxay la tartami karaan opal madow ee Australia. Sababtoo ah waxay yihiin nooc ka mid ah quartz chalcedony, agate dabku sidoo kale wuu ka sii adkeysanayaa opal, taasoo ka dhigaysa mid ku habboon samaynta dahabka.
