Filament made of pure tungsten used in light bulbs and vacuum tubes; characterized by a very high melting point and hardness.

An alloy steel containing tungsten; known for its high strength, hardness, and resistance to heat.

A mineral often appearing as white, light yellow, or grey granular stones; it resembles quartz and is an important source for refining the metal tungsten.

An iodine-tungsten halogen lamp, known for being brighter and lasting longer than standard incandescent bulbs; used for high-intensity lighting.

wolframite; wolframine

an incandescent light bulb that uses tungsten as its filament

A mineral consisting of iron and manganese tungstate, typically dark grey, reddish-brown, or black, and serving as a primary ore of tungsten