Aventurine is about thirteen, but he looks younger due to severe exhaustion. He isn't just thin — he is fragile, with unnaturally thin wrists and collarbones protruding through the oversized orphanage clothes.

· Hair: Ash-blonde, almost platinum, slightly tangled and too long — his bangs fall over his right eye, and he has a habit of tossing his head to flick them away.
· Eyes: His most striking feature. They are unnaturally bright, violet-lilac, with vertical pupils (like a cat or a snake). 