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Bi, Bismuth

Wikipedia (It is a brittle metal with a silvery white color when freshly produced, but is often seen in air with a pink tinge owing to surface oxidation)
It is diamagnetic at room temperature. Susceptibility = - 2.801E-4 emu/mol from this table


BiFeO3

= Bismuth ferrite, also commonly referred to as BFO in Materials Science wiki
Antiferomagnetic with Neel temperature approximately 653 K.
Most promising multiferoic material.

Bi2Fe4O9

Multiferroic.
Antiferromagnetic with TN approx. 240 K. Here are data on nanoparticles measured in Ljubljana

Bi2Te3

= Bismuth Telluride.
According to this old paper it should be diamagnetic. Ref.