This 6mm band has a satin finished flat center set off by polished ridged edges. A trendy contemporary style created from cobalt, a silvery-white bio-friendly metal with uncompromising strength that will not chip or crack, is scratch resistant and hypoallergenic. Suitable for engraving. R10447-10 Dura Cobalt, comfort fit design Shatterproof, scratch-resistant, hypoallergenic 6mm, satin band with polished ridges Suitable for engraving Includes a custom Black Bow Jewelry Company gift box