Celtic Dragon Engraved design in the center of the band. This Celtic design symbolizes never ending love. It also comes with polished edges which are separated from the Celtic Dragon design by two finely polished grooves. This ring can be worn as a Wedding Band or Promise Ring by men or women. Our rings Are Hypoallergenic. If you are looking for a ring that is scratch resistant and forever keeps its shine, then our Tungsten Carbide rings are for you. Tungsten Carbide is ranked second hardest next to diamond on the Mohs scale, diamond being a 10 followed by Tungsten Carbide as 9.