Crystal at home - Ivett Leitner
Crystal at home
"These copper sulphate crystals can be grown at home using household chemical (Copper (II) sulphate pentahydrate). You have to mix copper sulfate with boiling water and leave for about 20-24 hours. Filter the cooled solution. You can hang a piece of little crystal on a fishing line into the solution. After weeks, blue triclininc crystals will form spontaneously.
NOTE: Copper (II) sulphate is moderately toxic and irritative.
As these crystals dry, they lose their colour and get dark surface."