Choose Options Quick view Lord Oxcroft Serinium® Beveled Edge 8mm Wide Center Thin Blue Line Wedding Band Serinium® DurabilitySerinium® tough, hard and scratch-resistant. Serinium® is twice as hard as Cobalt Chrome, 5 times harder than Titanium, 6 times harder than Platinum, 7 times harder... MSRP: $875.00 $525.00 Choose Options