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Crystal Museum – Makes a great addition to a rock and crystal collection. Educational and fun!
Contains 8 Specimens of Crystals (click on the name for more information):
Each crystal has a description on the back of the card.
Examples:
Amethyst – the purple color is caused by the iron and manganese compounds that are part of the crystal. Fine Amethyst crystals are part of the British royal jewels.
Zeolite – This clear crystal was grown on the space shuttle to test effects of weightlessness on crystal growth. Not only used in jewelry, it is also used as a chemical filter.
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