JewelStop Silver Black Ruthenium 1.5mm Diamond-Cut Extendable & Adjustable Rope Chain, 16-22, 5.5gr. Ravishing and stunning rope chain necklace brought to you by Jewelstop. The rope chain necklace is crafted in 925 sterling silver stamped and marked. The rope chain is silver in color and has a lobster claw clasp. We offer you 1 year warranty along with 30 days money back guarantee. The product dimensions are: 22" long and 1.5mm in width.