How to Grow Bismuth Crystals at Home

A bismuth hopper crystal forms when the edges of the crystal grow faster than the center. As bismuth cools, atoms are more strongly attracted to the crystal’s edges, so those areas build outward first. This creates the signature stepped, hollow, staircase-like structure known as “hoppering.” | Rare Earth Gallery

Bismuth on the Periodic Table | Discovery, Facts & Uses

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