"ARIA Black and Rose Tungsten Flat Satin Finish Ring with Single Polished Offset Groove by Triton Rings This classic and edgy Triton black tungsten ring features a brushed finish with a single rose polished offset groove. This style is available in 8mm width. Black Tungsten Carbide rings are very durable, but can be scratched. Larson Jewelers is proud to be an authorized dealer of Triton Rings. Triton Rings is one of the most well known and respected designers of tungsten rings in the USA. All their rings come with a manufacturer's warranty that covers size exchanges for life, and repair or replacement in case of accidental damage. Note: There is a fee charged by Triton Rings, not us, for all warranty work to cover shipping and handling.