Amethyst: Are you tired of playing with your hyperactive cat? Next time she cuddles for a game, ties an amethyst pendant across her neck, and sees how her 8th chakra works! Amethyst is an exceptional grounding stone that calms down cats and helps them to relax easily. Amethyst is calming and great for pain (physical and emotional). It is helpful for stress, grief, fear, panic, and pining, and is great to use if a cat must be quarantined or kept in a crate or cage for any length of time.