XOSHJANOVA, K. and SOBIROVA, N. (2026) “MINERALOGICAL-GEOCHEMICAL AND GEMMOLOGICAL CHARACTERISTICS OF OPAL, CAHOLONG OF THE KYNYR DEPOSIT”, «ACTA NUUz», 3(3.1.1), pp. 349–352. doi: 10.69617/nuuz.v3i3.1.1.14744.