Quick view Emperor Mimaki Serinium® Domed 8mm Wedding Band with Barong Laser Engraving $750.00 $450.00 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