Quick view King Mardan Serinium® Pipe Cut 8mm Wedding Band with Blue Line Inlay Black Line Inlay $895.00 $525.00 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... Choose Options Add to Wish list