Aluminium Potassium Sulphate

It being the day after Christmas I have been supervising the growing of crystals from a National Geographic crystal growing kit. This evening we created our first solution of aluminium potassium sulphate (plus orange dye) and now only three and a half hours later we already have three large crystals plus many smaller ones. The biggest is about 14mm across. What will they look like tomorrow?

Aluminium potassium sulphate

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