Cobalt rings are constructed of an alloy that mimics the appearance of white gold or platinum, but with many times the durability.  It is 4x harder than platinum and 5x harder than gold.

This metal will not corrode, crack or shatter, yet it is highly scratch resistant and can be polished by a jeweler.

This versatile metal is used in medicine and dentistry for its hypoallergenic properties as well as in the aerospace industry for its durability.

Comfort fit.

Hardness Guide: