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.
Another key difference in tungsten vs. cobalt is the weight of the metals. Tungsten rings have become known for their inherent weight, especially when compared to the feather-light weight of titanium. Again, tungsten and cobalt are quite similar in this regard.