What are crystals and how do they form?
What is a lattice?
How can you grow your own crystals?
What are some different types of crystals?
Why do different crystals have different colors and shapes?
What are the seven main shapes of crystals?
What is quartz?
What is a geode?
How can you tell if a crystal is really worth anything?
What are sapphires?
What is a diamond and how is it formed?
What is a ruby laser?
What is piezoelectricity?
How do you make rock candy?
What is the Hope Diamond?
How does a watch work?
What is the difference between semi-precious and precious stones?
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