Agat rangli qimmatbaho toshlar orasida eng yaxshisi va buddizmning etti xazinasidan biridir. Bu juda mashhur. Agat kremniyning kolloid mineralidir (Si02), va uning shakllanishi vulqon faolligi bilan chambarchas bog'liq. When the underground magma with complex composition breaks through the weak parts of the overlying rock layer under the [...]
