Choose Options Quick view King Garston Serinium® Pipe Cut 10mm Wedding Band with Hammered Thor 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: $695.00 $405.00 Choose Options