This is aUnique Australian Opal Engagement Ring,center stone was surround bymilligram glod and two small opal,a beautiful three stone wedding ring. Product Information Engagement Ring: Metal Sterling Silver, 10k/14k/18k gold, Platinum Center Stone Lab created opal Shape Round Weight approx 1 carat Size 6.5mm Accent stones Opal And Moissanite Set Prong, Pave Set