Cobalt Chrome.
Cobalt chrome is an alloy, made up of a mixture of chromium, cobalt and a few other metals. Both cobalt and chromium are elements on the periodic table. Cobalt chrome is often used specifically for its strength in applications with high temperatures, such as jet engine turbines. It is also a hypoallergenic metal, and often used in orthopedic applications and cardiovascular stents.

14k rose gold men's band with satin polish finish. (cc8b13s 14krgsatin polish) $897

Men's cobalt chrome grooved edge band with satin polish finish. (cc8bsanglesatin polish) $327

14k cobalt chrome and rose gold men's band with polish finish. (cc8d12-14krpolish) $747

Cobalt chrome men's band with lapis inlay and sand finish. (cc8d12-lapissand) $597

Cobalt chrome men's band with cross satin finish. (cc8fec2wumil crosssatin polish) $297

Cobalt chrome men's band with square design and bead polish finish. (cobalt-chrome cc8fsq25 bead-polish) $497

Cobalt chrome mens bad with etched design and polish finish. (cobalt-chrome cc8hrmmjbapolish) $447

Cobalt chrome men's band with twist polish finish. (cc8reftwistpolish) $447

Cobalt chrome men's band with grooved edge and satin polish finish. (cc7dgeanglesatin-polish) $327

14k yellow gold men's band with satin finish polish. (cc6fgew 2umil13c 14kysatin-polish) $897

14k yellow gold men's band with hammer polish finish. (cc7d21w 14ky2umil hammer-polish) $882

Men's black diamond eternity band with grooved edge and satin polish finish. (cc8bs eternityblkdia04 anglesatin-polish) $2112

Cobalt chrome men's band with sapphire and diamond setting and satin polish finish. (cc8b3x sapp2xdia satin-polish) $1617

14k rose gold men's band with satin polish and grooved edge. (cc7fge 21edge-14krsatin polish) $837

Cobalt chrome men's band with infinity bead design and satin finish. (cc6dinfbead-satin) $447