3 of 4 people found the following review helpful
If you're not sure - buy this!,
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This review is from: Grow your Own Magic Crystal - Blue (Toy)
Always in search of a science-based stocking filler, this item is simple and yields excellent, rapid results. The crystals can be painted with clear varnish or nail varnish, but even without, last for months in their clear plastic container. Kids fascinated, money well spent!