Beauniq Solid Sterling Silver Rhodium Plated Simulated Blue Opal Dolphin Tail Pendant Necklace Unsure what length chain to buy? 18 inches is the standard length and will look great on most women To purchase the pendant WITHOUT the chain, choose the "0.0" length from the dropdown menu Pendant measures 16mm (5/8 in) x 23mm (15/16 in) Chain is 1.30mm thick and 16 inches long Weighs 5.14g