Sterling Silver Created Blue Opal Inlay Nautical Koi Fish Ring Coy Fish Animal Ring Stone: 7mm L x 5mm W Material: Sterling Silver, Synthetic Opal, Rhodium Plating Measure: 3mm Band Width Weight: 4.75 grams Coy Fish Animal Ring Stone: 7mm L x 5mm W Material: Sterling Silver, Synthetic Opal, Rhodium Plating,Measure: 3mm Band Width,Weight: 4.75 grams