Outstanding Vintage Sapphire Diamond Trilogy RingVery good antique condition, all stones are secure in their settings and band is thick and sturdy, engraving in excellent condition. Details: 18k yellow gold and platinum, stamped and tested Size 8. 25 loose (slightly out of round) and can be resized within two sizes One oval natural sapphire approximately 6x5x3. 4mm, two transitional cut diamonds approximately 0. 20 carat total weight Face of ring measures 8. 4mm wide, 12mm across, with a rise of 3.