Vintage Victorian Opal & Diamond Ring 14k Yellow GoldVintage Victorian Opal Diamond Ring 14k Yellow Gold. This original antique Victorian right hand ring features a cabochon cut opal at its center. The center stone is a . 31 carat cabochon cut opal that has a lovely translucence and vibrancy. The opal sits on a bed of old mine cut diamonds that provide gorgeous sparkle and a unique texture. Two additional diamonds adorn the shoulder of the ring and round out this wonderfully special piece.