Titanium is a natural element which has a silver-greyish-white color and is the hardest natural metal in the world. It is very strong, three times the strength of steel and much stronger than gold silver and platinum and yet is very light weight.
Pure titanium is also 100% hypoallergenic which means that it is safe for anyone to wear as it will not react to your skin. Its inertness makes it a good choice for those with allergies.
The most noted chemical property of titanium is its excellent resistance to corrosion; it is almost as resistant as platinum, capable of withstanding attack by acids.
When the metal is heated it shows the same colors associated with the tempering of steel, plus a few others. Unlike the fleeting effects on steel however, titanium colors are completely stable
The color phenomenon is caused by the development of an oxide layer in which a certain part of the light is absorbed and only the remainder is reflected to be perceived by a viewer. As the temperature increases, the oxide layer becomes thicker and absorbs more light. There is a clear series of these colors. Βegins with a bright yellow, which is created by an oxide layer of sufficient thickness to cause constructive interference to give this appearance. As the oxide layer grows thicker, other colors are produced because the interference removes various parts of the white light striking the surface. The colors run through green, violet, bright blue to a dark blue. If heat is continued, a second yellow color will result as the interference causes the same effect as in the first yellow.
Pure titanium dioxide has a very high index of refraction and an optical dispersion higher than diamond. In addition to being a very important pigment, his dioxide is also used in sunscreens due to its ability to protect skin by itself.
Because of its durability, has become more popular for designer jewelry and some artists work with this magical metal to produce artworks such as sculptures, decorative objects and furniture
Titanium is present in the sun and certain other stars, in meteorites, and on the moon. Titanium dioxide causes the star effect in certain sapphires and rubies.