Rubellite has magenta skin, two heads with styled dark magenta hair, plump lips on her right head, and six eyes, three on each head, with magenta irises and no pupils. She has a thin build with four arms, a round chest, thin waist, and small hips. Her gemstones are embedded in her navel and chest.
She wears a magenta and bright magenta striped top with thick pink straps. She wears magenta and bright magenta striped toeless pants with a light pink left hip.