Bismuth Crystal - Crystals - Earth Science/Geology


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Bismuth Crystal
RM-520

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$6.95 ea.

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These beautiful man-made crystals float to the top of a super-cooled bismuth melt and form within minutes. Bismuth is one of the few materials that have a greater density as a liquid than as a solid. Only a few other materials such as water, gallium and germanium, exhibit this property. The trigonal crystal structure accounts for the cubic formations. The iridescent rainbows of colors observed are caused by light scattering off thin layers of bismuth oxide formed when the surface of the hot bismuth reacts with the air. Specimens range from 12 to 17g with a density of 9.81 g/cc. Great for teaching about crystals, states of matter or even as a gift!

Bismuth Eggs

These unusual specimens are formed when liquid bismuth is allowed to cool and crystallize inside a chicken egg.

Crystal Growing Dolomite

Sometimes called "Popcorn Rocks", these gray Dolomite samples grow beautiful white Aragonite crystals when placed in a small bowl of white vinegar.

Pyrite Cubes

Cubic specimens of FeS₂, formed over 100 million years ago by sulfur reacting with iron.

Space Age Crystal Kit

This package comes with all the chemicals you need to create a beautiful crystal cluster.