Amethyst has long, very pale, light-purple hair which covers her left eye, big lips and lilac-purple skin. She wears a dark purple, off-shoulder tank top with a black bra underneath, black leggings, and white boots. There are star-shaped holes cut out of her leggings. Her gem stone is an amethyst which is embedded in her chest.
Amethyst is fun and care-free. Loud and full of laughter, she finds everything amusing, and isn't afraid to act on impulse. She has overall bad manners including chewing with her mouth open and picking her nose. In relation to Steven, she tends to indulge him more and partake in activities with him.
Activating her crystal gem summons an energy whip. She also appears to have shape-shifting abilities.
- Amethysts are deep-purple colored gems similar to the one "Amethyst" has on her chest.
- Of the characters whose design changed from the pilot to the series, Amethyst's design changed the least besides Steven.
- The amethyst stone is often associated with the greek god Dionysus who is the god of wine and intoxication. This could be the reason behind her implusive and self-indulgent nature.