Not all black titanium rings are the same. Many being sold on discount sites like amazon, ebay and the like are titanium rings that have been I.P. plated. This means the plating will scratch off, pretty easily from our tests. We've been selling black titanium rings since 2002 and have had many manufacturers send us ring samples. None of the rings we tested were actually black titanium. Many were IP plated and some were zirconium - not even titanium. So insist on an Edward Mirell brand ring as they use only the Black-Ti material developed by Spectore Corporation.