Grow your own amazing crystals in a just few days with this simple kit. Simply add the rocks in the kit to a dish of distilled white vinegar (not included and easy to get from the supermarket). Watch over several days as the crystals form on the rock into beaitful shapes and colours.
If you would like each rock to produce a different coloured crystal, place in separate bowls of vinegar rather than all in one.
Full instructions for use are given on the box which contains a bag of 6-8 small rocks. Box measures 8cm by 8cm by 2.7cm.
Adult supervision is recommended for young children.