Tungsten is an element and has been around since the late 16th century. For a long time, tungsten was primarily used for the advancement of civilization. It is the filament inside the incandescent light bulb and is used for making better cutting tool bits.
Tungsten is a very hard and; it's 4x harder than titanium and 2x harder than steel. Despite its hardness, tungsten can shatter with pressure or upon impact in some situations. This is because of how it is produced. Tungsten and carbide are ground to a powder, bound together using nickel, and compressed into a solid state, making it porous, brittle, and susceptible to shattering.
*some information sourced from www.americangemsociety.org/all-that-glitters