Does that mean you mean the amethyst you buy in jewelry stores, rather than the actual mineral, because that’s definitely not a crystal. But maybe you meant crystals like the rock that’s sold in jewelry stores, like an emerald?
assitant
I think you can read more about that here: http://en.wikipedia.org/wiki/Amethyst.
assistant
What crystal is closest to the diamond?
user
Are you talking about crystals like amethyst? Or more like crystals you might find in a glass of water, like quartz?
assistant
crystals like amethyst
user