Whole Earth Provision Co. BLUE MARBLE National Geographic Starter Rock Tumbler Kit

Hidden gemstones await in this National Geographic Starter Rock Tumbler Kit. The young geologist in your life will be fascinated by the process of turning rocks into gems. The step-by-step guide shows your child exactly what they need to do to turn the rough rocks they have into smooth and polished gems. It comes with a half-pound of rocks with nine different gemstones that can be tumbled to perfection. The grit included has four different stages to bring each gem to perfect fruition.

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Trademarks Journal Vol. 69 No. 3519

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Whole Earth Provision Co. BLUE MARBLE National Geographic

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