Quick view Lord Langcliffe Serinium® Flat 8mm Wedding Band Rope Style Rounded Edges and Bark Hand Finish $850.00 $495.00 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