Devera's Black and White CZ Twisted Wedding Ring The black rhodium electroplating will eventually wear off and need to be re-plated. We offer a 30 day Guarantee, No Questions Asked. You may get a replacement or a refund by simply contacting customer service. Devera's Black and White CZ Twisted Wedding Ring is great unisex ring for couples wanting to try something edgy. The sterling silver, black rhodium plated design features round cut CZs that extend all the way around the interlocking-twisted design. Each round cut CZ measures .014-carats and sparkles like diamonds.