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Poly Crystals - 1 oz

Poly Crystals - 1 oz

These crystals are just plain fun! Use them to grow plants, investigate cells, monitor water absorpt..

Product Code: 6167

$2.99

Poly Crystals - 4 oz

Poly Crystals - 4 oz

These crystals are just plain fun! Use them to grow plants, investigate cells, monitor water absorpt..

Product Code: 6168

$6.99

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