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Synthetic crystals of high-purity bismuth, and a 1 cm3 cube of it for comparison. Bismuth is a pentavalent poor metal. Silvery white when freshly produced, it is often seen in air with a pink tinge caused by surface oxidation. Among metals, it is the most naturally diamagnetic and has one of the lowest values of thermal conductivity.

Photo: Alchemist-hp
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