This kit lets children grow up to nine large crystals, including "golden citrine," "emerald green" and "aquamarine blue." It includes a bag of granite stones, LED display stands, goggles and detailed instructions.
— As of September 2010, this product had 3 out of 5 stars from 2 reviewers on Amazon.com. One reviewer described the kit as "amazing," but consumers complained the crystals took too long to grow.
— In summer 2010, four of 43 retailers told TDmonthly that rocks and crystals are best selling science and nature products.