Lab Created Opal Ring New Size 7 lab-created white opal center stone, and baguette- and round-cut, lab-created white sapphire accents, this halo ring makes a captivating accessory. • Width: 9.2 mm • Metal: sterling silver • Plating: rhodium • Finish: polished • Stone type: lab-created white opal, lab-created white sapphire • Total weight: 1 5/8 ct. • Center stone weight: 1 ct. • Center stone size: 7 mm x 7 mm • Shape: cushion-cut cabochon, baguette cut, round