Quick view Lord Langworth Serinium® Domed 6mm or 8mm Wedding Band with 2mm 14K Rose Gold Inlay $1,895.00 $1,125.00 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