8MM Men's High Tech Ceramic Black Wedding Band Grooved center Matte center with a comfort fit design high polished a very unique ring excellent workmanship.Available sizes 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13 What is Black Ceramic?Well known for toughness, durability and scratch resistance, Hi-Tech Ceramic is created by combining the newest technologies with exotic alternative materials like zirconium and yittra, along with specialized bonding agents.The result is a superior structural ceramic material with almost unlimited potential that stays polished forever! It has long been the material of choice for the aerospace, medical and dental industries.Recent engineering applications include tiles for the space shuttle program, gas burner nozzles, kiln-linings, bio-medical implants, jet-engine turbine blades, and ballistic protection.Frequently compared to tungsten carbide because of its extreme hardness, Hi-Tech Ceramic doesn’t scratch, craze, discolor, or fade.It is hypoallergenic, contains no cobalt, and is greatly resistant to chipping and breakage.Wedding bands made from Hi-Tech Ceramic are lighter in weight than tungsten, providing a more comfortable fit for the wearer, and can be produced in many high-gloss colors.Black Ceramic wedding bands are a sophisticated choice for a durable wedding band or fashionable accessory.Black Ceramic wedding bands are black all the way through.In the unlikely event that a Black Ceramic ring would ever scratch or chip, it would only expose more of the colorfast material underneath.Please allow for Shipping 5 to 7 Business Days