Also just want to mention
If you sell these rings to people make sure they have no metal, nickel allergies etc, right on their record card you've asked and sold a silver coloured or gold coloured non sterling siler/9ct true gold ring... State sold as non precious metal/stone and as such can tarnish loose colour on metal and sold as a occ ring and not to be worn all the time and get them to sign it. So if they come back and say my ring isn't silver coloured now you can state you did tell them and they signed saying they new this.