The chemical element bismuth as a synthetic made crystal. The surface is an iridescent very thin layer of oxidation. Additional a high purity (99.99 %) 1 cm3 bismuth cube for comparison.
This is the English translation of the Picture of the day description page from 5 May 2011.
The chemical element bismuth as a synthetic made crystal. The surface is an iridescent very thin layer of oxidation. Additional a high purity (99.99 %) 1 cm3 bismuth cube for comparison.