Alexandrite is a Homeworld gem that serves under White Diamond as one of her many warriors that she sends on various planetary missions. Alexandrite's current mission is one that Homeworld has been working on for years; the extermination of the Earth Rebels.
Alexandrite has a very childish appearance compared to other gems, and stands only at 4'11", which is the average height for other Alexandrites that are produced on Homeworld. She has bright magenta skin and mint green hair, which is styled in messy twin ponytails on the side of her head. She wears a large purple bow on the right side of her head, and wears a purple over blouse with white and frilled trim; under that, she wears a forest green undershirt. She also wears a very frilly purple skirt, and green boots. Her gemstone is located on her navel and is pink and green.