As a fusion of different Gems, Galaxite is very tall and slim possessing four pairs of arms. She has blue bell skin and christalle hair styled into a three-pointed star with flicks extending at the bottom. She has plump lips similar to Jasper's, and small pointed nose. It is unknown how many eyes she has because of her visor covering them. Her dark purple visor seem to be below Pearl's and Peridot's gemstones.
Galaxite wears a large indigo shoulder pad with a deep violet streak in the middle and is dark-mauve toned underneath, an indigo body suit, and ripped dark-purple leggings that extends down to her feet. She has dark-purple gloves on her first three pairs of arms that goes up above her elbows. The first pair of gloves resembling Garnet's, and the third pair also resembles the first pair but torn. She also wears a short dark mauve cape and has a galaxy printed underneath it.
Galaxite is stoic, and never speaks as described by GemCrust.  She's also very unstable and can't maintain herself for too long.
Galaxite possesses standard Gem abilities, bubbling, shapeshifting, fusion, regeneration, agelessness, and superhuman strength/durability.