Healdsburg is an authentic Victorian era (circa 1880) engagement ring made from platinum topped 18k yellow gold centering a stunning 1.55cts Contra Luz oval opal displaying a beautiful array of rainbow play of color. This show-stopping halo engagement ring is a wonderful example of Queen Victoria's love of opals and her desire to popularize the opal resource from her newly acquired Australian colony. Healdsburg features a halo of twelve Old European Cut diamonds weighing approximately 0.75ct. and is finished with beautiful milgrained edges around the bezel set diamonds. Healdsburg is currently a size 6.5 and can be sized to fit.