Fun and Bold Stephen Webster Superstud Ring in Sterling Silver. This piece has a large round doublet of green onyx and faceted white quartz. This is prong set and the prongs are shaped like thorns and it is surrounded by studs. The studs are actually a spinner that gives this piece a bit of whimsy. This ring is a size 7. It is stamped inside with 925, SW895, then SW, and the SW hallmark. This piece is in excellent pre-owned condition, hardly looks worn.