According to About.com, titanium in its natural state of matter is a solid. It is the ninth most common element in the Earth's crust and is usually found in igneous rocks. Titanium is classified as a transition metal.
First discovered by William Gregor in 1791, this element was not actually isolated in its pure form until 1910. It is a white metal with high resistance to corrosion. The majority of titanium is used to make titanium dioxide, a white pigment found in toothpaste, paint and paper. Titanium is a lightweight alternative to steel. It is heavier than aluminum, but it has double the strength.