Crystal has the ability to transform her body into flexible, organic crystal. In her powered form, she can transform air molecules into hard crystalline structures and simple forms, such as spears, blades, and protective walls. She can surround a foe in hard crystal (porous enough to let them breathe) to immobilize him. Her crystal creation powers do not work in a hard vacuum (like that of outer space), as there are no air molecules to transform.

By touching a person, she can transmute him into crystal for a brief period of time, but this is very draining on her. Her crystalline form is also stronger, faster and more durable than a normal human's. Her crystalline body and structures are very susceptible to extreme sonic frequencies, so she tries to avoid close contact with sources of high-powered sound.