Suggestion for easily synthesized crystals?

Are there any crystal that is:

• insoluble in water and other common liquids
• does not melt or become chemically altered in most scenarios
• can be synthesized at relatively low temperatures (less than 1500 degree Celsius)
• can be made relatively cheaply (not more expansive than synthetic diamond)
• monocrystalline, or at least easy to anneal

I am asking because I want to find a kind of crystal that can be used in my world as a "base" for magic instruments, which are synthetic and relatively abundant (as compared to jewelry). The magic itself is mostly irrelevant to the synthesis process, beside making the final product magical.

posted over 8 years ago

user22492‭

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