This large chunk of Moscovite Mica, 2-3 inches in diameter, is great for any mineral collection.
A common rock-forming silicate, generally colorless and ranking No. 4 on the Mohs scale of hardness. It has a variable chemical composition of potassium, magnesium, silicon, and oxygen, with water in its crytalline structure. Large, clear plates of mica where once commonly used for windows, but more often used as an insulator.
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
Build your very own smart robot!
This superb chemistry set features 350 mind-boggling experiments!
Every kid needs one of these spheres!
This black scorpion specimen is great for the classroom setting!
A massive mounted set of 100 rocks and minerals found in the US,
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