Astro Sign: Aquarius, Libra
Amethyst is extremely beneficial to the mind, calming or stimulating as appropriate. When you meditate, it turns thoughts away from the mundane into tranquility and deeper understanding. Mentally, it helps you feel less scattered, more focused and in control of your faculties. It enhances the assimilation of new ideas and connects cause with effect.
-"The Crystal Bible" by Judy Hall