She is stoic, crazy and can be prone to paranoia. She seems seductive when around Ribbon Jasper. She can also get be easily interested in some things.
She is the same height as an ideal quartz with grey skin with lighter; fluffy hair, purple eyes with black eyelids.
She wears an grey and black jumpsuit with pointed shoulders, black gloves with matching ankle boots. She also has the typical quartz lips and holes where the corners of her mouth should be.
Twilight Mountain Amethyst possesses standard Gem abilities, including weapon-summoning, shape-shifting, bubbling, regeneration, agelessness and superhuman strength/durability.
She has the same unique abilities as any other of her kind.
- She and Ribbon Jasper were formerly a couple that were madly in love with each other and usually fused most of the time; they formed Samadhi Quartz.
- Her appearance and fusion dance is inspired from the Kabuki lion dancers.