If you are looking for a bracelet that is scratch resistant and forever keeps its shine, then our Tungsten Carbide Bracelets 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. All of our Tungsten bracelets are Cobalt Free and hypoallergenic. Our bracelets will not cause skin irritations nor turn your fingers green. Due to the Hardness of Tungsten, these bracelets can be laser engraved, but not hand engraved. All bracelets come with a 100% Money Back Guarantee. Lifetime warranty, lifetime sizing, and guaranteed for life!