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.
Why is tungsten carbide the most scratch resistant metal known to man? Tungsten molecules arrange themselves like a 3D version of a chain linked fence, which gives it extreme hardness. It is so tough, it is sometimes classified as a ceramic, which is known for its ability to withstand high temperatures and resist wear.