Marlin | Sword Fish Designed with Ocean Opal .925 Fine Sterling Silver Pendant Necklace with Rhodium Plated on delicate sterling silver chain. Hawaiian Jewelry Material: Ocean Opal Metal: .925 Sterling Silver with Rhodium Plated Total Weight: 4.5 grams Size: 1.0 inch x 0.75 inch Our CAREFREE sterling silver is plated with quality Rhodium, the most tarnish resistant and most expensive member of the Platinum metals group. It virtually eliminates the need for frequent cleaning and polishing; increases surface hardness against incidental scratching and abrasion; and adds an expensive platinum look