We made some changes to this biker ring due to the fact that we found some excellent quality black onyx at a great price. We're passing the savings on to you! Crafted from .925 sterling silver, this beauty feature a large black onyx cabochon stone (13mm by 18mm). A size 10 weighs in at 23 grams. Expressive filigree work and no nonsense design will help you get in touch with your "inner biker"... or your money back!