RINGS-4U 6mm Cobalt Chrome Comfort Fit Unisex Men's Women's Wedding Ring Band SZ.5-15 Cobalt Chrome brilliant white color that is similar to platinum, without the cost, and they never need polishing; Cobalt chrome is four times harder than gold, five times harder than platinum and seven times harder than silver; Cobalt Chrome Ring will not chip or crack. Classic and Timeless Comfort Fit- Width- 6mm- ALSO available in 4mm- ASIN: B01N18MH6R Polished to a Brilliant shine- Ideal for: Wedding- Anniversary- Engagement