Assay hallmarked silver black stone ring. Assayed with the anchor hallmark for Birmingham, the RSB hallmark for Real Silver Bling and the 925 hallmark for sterling silver this real sterling silver ring has a centre black cubic zirconia gemstone which is rectangular cut and facetted. It has a border of clear round cz gems and these are also on the shoulders in a pave setting. The rectangle filled with gems measures 10mm x 8mm and the ring weighs approximately 3.28 grams.