NSI International Inc. is a global marketer and manufacturer of creative toy and consumer products including Magic Rocks™, Smithsonian® Science kits, and its own craft and activity brands. NSI’s products can be found in thousands of retail locations in more than 30 countries around the globe.
Smithsonian – Crystal Growing
Watch in amazement as gem-like crystals form before your eyes. Grow “golden citrine”, “emerald” green and “aquamarine” blue. Learn about crystalline habitats. Detailed instructions are included.
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