Grow a Green Crystal by Thames & Kosmos

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Grow sparkling, green crystals overnight!

Grown from a safe solution of potassium aluminum sulfate. Single out the largest crystal shard, redissolve the remaining crystals, and repeat the crystal formation process to grow a larger, more striking crystal. These kits include all the materials and tools you need to grow a single crystal, as well as a small hexagonal storage box in which to keep your crystal safe.

Age 8 & up

10-page manual

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