Magma is one of Terra's closer friends, and one of the workers on the colony described in Lapis Lazuli's story.
Appearance
Magma is a Quartz Gem amongst Homeworld's ranks. Like Amethyst and Carnelian, she is stunted in her growth, hinting she might be overcooked. Her skin is a bright red, with her hair short and spiked upward like flames of a fire. Her Gemstone is located on her cheek, hidden by her hair.
Her attire is standard Homeworld attire with a Diamond insignia on her chest.
History
Magma, according to Lapis's story, worked alongside Terra during production on a new moon colony. During her time there, she used to tease Terra, her and Comet referring her as a Fossil. She stopped doing it as much when she was told about Silver Rutile. When the colony started to become inefficient, she and Comet were taken to a new colony as Terra was left behind.
Many years later, Magma actually went to Blue Diamond, requesting that they go back to the colony and find Terra to make her happy again, as she helped them so much before. She was there with Comet to welcome Terra to the new colony.