Best Answer: So used to something it doesn't impress you anymore. Unimpressed, unfazed. A person who is blasÃ© about something would respond Meh.
While cobalt is harder than titanium, and therefore more scratch resistant, tungsten is still the hardest metal currently on the market. In simple terms, although cobalt and tungsten are both extremely hard metals, a tungsten ring will have a higher resistance to scratching. MONARCH-Tungsten Diamond Ring.
Grade 1 is the softest form of titanium, and Grade 4 is the hardest form of titanium. For the purposes of titanium wedding rings, the best type of titanium is Commercially Pure (CP) Grade titanium which is 99% pure. CP titanium is available in Grades 1 through 4, but for wedding rings Grades 2 to 4 CP is best.