Amethysta is a Silicosapien from the planet Silico. She is a silicon based alien, contrary to her name, and possesses a super dense molecular structure, making her practically invulnerable. Amethysta can control her crystal physiology at will, allowing her to create crude crystal weapons from any part of his body on demand or fire crystal shards from her hands. This same ability also allows her to regenerate to an extent, such as regrowing lost limbs. In addition to growing crystal from herself, Amethysta can grow crystal over the ground. Her crystal body acts as a prism that can refract light and energy beams. The one drawback to Amethysta's crystal form is the crystal itself, which can shatter if exposed to sufficiently strong sonic vibrations. While Silicosapiens can regenerate limbs, there is a limit to how much damage they can recover from.
Amethysta’s appearance is identical in design to the version of Diamondhead that Gwen transforms into in “Gwen 10” (See picture below), except she is the color of an amethyst gem, her eyes are light blue, the blue parts on Diamondhead/Gwen are light blue on Amethysta’s outfit, with the Multitrix in the same location as the Omnitrix on Gwen. She is the sixth alien in the Multitrix originally.
Amethysta’s appearance is identical in design to the version of Diamondhead that Gwen transforms into in “Gwen 10” (See picture below), except she is the color of an amethyst gem, her eyes are light blue, the blue parts on Diamondhead/Gwen are light blue on Amethysta’s outfit, with the Multitrix in the same location as the Omnitrix on Gwen. She is the sixth alien in the Multitrix originally.