18k yellow gold and platinum precious topaz and diamond ring. The wide, prong style setting features 1 pear shape precious topaz, that measures 11.65x20mm. Based on the measurements the topaz weighs approximately 11 carats. 31 small, pave set diamonds flank the center stone. They weigh approximately 1.75 carats total. The ring weighs 12 dwts, and is a size 6.