Pure titanium is bright, silvery white. It's a very strong metal that's used to make items requiring extra-tough material, such as jet engine and rocket parts. Titanium is also nonallergenic and doesn't rust, so it's also used to make prosthetics, such as artificial hip and knee joints.
Titanium is used to make posts for dental implants because it's biocompatible with the human body. Its silvery color also makes it a popular choice for jewelry. Titanium is an abundant metal both on Earth and throughout the universe. It's found in stars, in the sun, in meteorites and on the moon; however, it's expensive because of the difficulty involved in refining it.