Quick view Lady Elstree Serinium® Domed 2mm or 4mm Ladies Wedding Band Polished Finish $545.00 $285.00 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