is bismuth natural or manmade
Bismuth is the most naturally diamagnetic element, and has one of the lowest values of thermal conductivity among metals. Bismuth metal has been known since ancient times, although until the 18th century it was often confused with lead and tin, which share some physical properties.t ambient conditions bismuth shares the same layered structure as the metallic forms of arsenic and antimony, crystallizing in the rhombohedral lattice (Pearson symbol hR6, space group R 3 m No. 166), which is often classed into trigonal or hexagonal crystal systems.