This is a pretty natural Lapis Lazuli stone ring made in some silver metal. It was labeled as rhodium plated sterling silver, but it definitely is not sterling. It is slightly magnetic, so it is possible it is stainless steel, but there are no markings on the ring. The large 16mm x 12mm cushion-cut stone is genuine Lapis Lazuli, however, and is a very pretty dark royal blue stone. It is made in a size 7 (maybe as small as 6.75-hard to tell with the wide 4.7mm band). Its measurements are 0.80 by 0.60 inches on the top of the ring.