Retro Large Opal and Old Mine Cut Diamond Ring in 18kt Yellow Gold and Platinum

Retro solitaire opal and Old Mine cut diamond ring in 18kt yellow gold and platinum. Set with a large oval cabochon cut precious opal in a platinum claw setting, flanked with triangular shoulders featuring three small rose-cut diamonds surrounding a central bigger oval Old European cut diamond on either side, all set in yellow gold claw settings and terminating to a solid shank. Marked 18kt.