Choose Options Quick view Duke Treswell III Serinium® Beveled Edge 8mm Wedding Band with Round Brilliant Diamond and Polish Finish 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: $1,050.00 $615.00 Choose Options