18.52 carats total Brazilian fire opals Lot. The oval fire opal weights 7.725 carats, the longer oval one weights 6.975 carats and the pear shaped one weights 3.825 carats. These gemstones are untreated. One oval has an internal crack, the other longer oval is a bit milky and the pear shaped one has tiny black dots. Please be certain of purchase because I don’t accept return.