JewelStop Silver Yellow 1.5mm Diamond-Cut Extendable & Adjustable Sparkle Chain, 16-22, 4gr. Ravishing and stunning sparkle chain necklace brought to you by Jewelstop. The sparkle chain is crafted in 925 sterling silver stamped and marked. The necklace is silver in color. The sparkle chain necklace has an unlimited 1 year warranty and 30 days money back guarantee. The product dimensions are: 22" long and 1.5mm in width. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.