Bismuth

Real Metals · Uncommon · Modern

Bismuth is arguably the most visually striking of all metals. Slowly cooled from its melt, it forms geometric hopper crystals with a rainbow oxide coating that looks entirely artificial. It is also one of the least toxic heavy metals, making it useful in medicine.

Identity

Symbol
Bi
Atomic number
83
Source
Natural element
Aliases
Bi

Physical Properties

Appearance
Silvery-white with a pink tinge when pure; forms spectacular iridescent hopper crystals with rainbow oxide tarnish
Luster
Metallic
Density
9.79 g/cm³
Melting point
271 °C
Boiling point
1564 °C
Lighter
Voidsteel
Denser
Beskar
Magnetism
Non-magnetic
Electrical conductivity
Low

Mechanical Properties

Mohs hardness
2.5
Tensile strength
7 MPa
Softer
Tin
Harder
Brass
Workability
Easy
Brittleness
Brittle
Malleability
Very Low
Ductility
Very Low

Chemical Properties

Corrosion resistance
moderate
Reactivity
low

Lore & Narrative

Bismuth was long confused with lead and tin. It was only in the 18th century that chemists established it as a distinct element. Its primary medical use, Pepto-Bismol, makes bismuth the only element with a starring role in stomach medicine.

Notable uses
Medicine, low-melting alloys, cosmetics, crystal growing
Forge uses
low-melting alloys, cosmetics, medical
Worldbuilding traits
iridescent, crystalline, non-toxic, beautiful

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