Sardonyx towers in size. She has reddish-brown skin and cream-colored hair, styled into a tetrahedron with very rounded corners. Her torso greatly resembles Garnet's, but has less mass. As a fusion, she has four arms and inherits the same locations of her gemstones as her fused cooperators. She wears a black, tailcoat tuxedo-leotard with an orange bow tie and a small, black star. The underside of the tail of her tuxedo is the same shade of orange as her bow tie. She wears two-toned, purple-gray leggings under crimson tips surrounding the top part of her feet. On her first set of arms, she wears white gauntlets, exposing her hands with the exception of a white covering on her middle finger(s). On her second set of arms, located on her abdomen, she wears white gloves that closely resemble Sa