The crystal is silicon dioxide, and the Mohs hardness is 7; The Mohs hardness of garnet is between 6.5 and 7.5; Prehnite's Mohs hardness is only 6.5; So the three do not belong to the same category.
As for whether it is a growth enterprise market, it is not good to generalize. Among them, because garnet and crystal are not a single product, there are many separate classifications. For example, the top green andradite in garnet, also known as "garnet", is a very precious gem. Cat's eye golden hair crystal in crystal is also an expensive gem. Serpentine is relatively simple, but the top serpentine is also a gem.
But at the same time, these three categories are also very cheap, and there are many tens of dollars.
I hope the above answers can help you.
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