925 Sterling Silver Rhodium Plated 3.6mm (9/64 Inch) Diamond Cut Rope Chain Necklace 20" JewelStop - Sterling Silver Chains & Necklaces. $202.40. 20" Inches (50 cm). Images are enhanced for better view and are NOT actual size. Refer to the Product Details for approximate item info.. High Polished Finish. Rhodium Plated 3.6mm Diamond Cut Rope Chain Necklace 20". Save 68% Off!