Mens Tungsten Ring Sz10 Black/Double Lab Opal Strips Unique Look New W Tags

Tungsten is known as one of the toughest things found in nature. It is super dense and almost impossible to melt. Pure tungsten is a silver-white metal and when made into a fine powder can be combustible and can spontaneously ignite. Natural tungsten contains five stable isotopes and 21 other unstable isotopes. Alina Bradford Cited