Peridot

"Peridot" is a Gem who made their debut in "Warp Tour".

Appearance
Peridot has neon green skin and eyes. Their light green fingers are not directly attached to their body, but instead float around where their hand should be. Peridot's hair is short, yellowish green, and styled into a tetrahedron shape. A light green visor covers half of their face. They wear a V-neck body suit that covers all of their body, except for their upper arms. Their body suit is mainly composed of dark green and has a black diamond outline around the cut out of their neck area; meeting together to a light green diamond in front, with the lower half of their suit being black and dark green around their upper legs. Peridot's sleeves and boots are mostly composed of green and black as well. They have light green, diamond-shaped knees and elbow pads. Their gem is located on their forehead and is shaped like an inverted triangle with rounded edges.

Personality
Peridot doesn't seem to show any care for their robots, as they destroyed a broken one without hesitation by crushing it beneath their foot. They also seem very technological and intelligent, as demonstrated when they were using very advanced terms when performing a "maintenance check" on Earth.

Abilities
All Gems can shape-shift, summon a weapon, and retreat to their gemstone to heal. As well as having aforementioned abilities, Peridot is also able to detach their fingers from their body and project a holographic touchscreen from them. They can also produce an EMP device from their gem to disable the Flask Robonoids. This may be her weapon.

Crystal Gems
The Crystal Gems don't seem to know who Peridot is, but they seem to be afraid of them, as shown when they hid when they first appeared.

External Information
Learn more about the peridot gemstone here.

Trivia

 * They are the second non-fused Gem to be discovered, and not previously established in earlier episodes. The first is Lapis Lazuli.
 * Peridot shares the same gem location with Pearl, their foreheads.
 * This possibly indicates their heightened intelligence.
 * Ironically, they seem to have limited knowledge of Earth, as shown as retreating Earth when they discover the sticker on the warp pad after thinking that the Galaxy Warp has been "compromised".
 * Peridot is the birthstone of August, along with Sardonyx.
 * Peridot is the gem-quality Olivine mineral. The mineral olivine is a silicate, and its crystal structure is made up of single isolated tetrahedron crystals. This tetrahedron shape has the same shape of Peridot's hair.
 * Peridot doesn't have a star on their uniform. Instead, they have a diamond.
 * Lapis Lazuli also follows this trend.
 * This trend appears to occur on Gems that are not part of the Crystal Gems, who all have a star on their uniform.
 * This may hint a dispute between Gems with stars and gems with diamonds. This is bolstered by the murals in the main room of the pyramid in "Serious Steven", where Rose Quartz (star on clothing) is fighting another gem with a diamond on their clothing.
 * Although, Pearl had a diamond on her space uniform in "Space Race", this has yet to be explained.
 * Peridot is the first gem outside of the Crystal Gems to have a job (Maintenance Worker).
 * It may also be possible that Peridot works as some sort of law enforcement.
 * Based off of the loud pounding with each step they take, it can be assumed they have an unusually immense mass, possibly due to their bio-technological getup.
 * It is hinted that the Crystal Gems either know Peridot, or know what they're affiliated with.
 * Based on their subsequent panic, it can be assumed that the Crystal Gems have a negative relationship with Peridot or their affiliates. This is further supported by Pearl, stating that she "can't go through this again" and Amethyst, quoting that they are in deep trouble as if they've committed something they shouldn't have done.
 * This can be disproven by the fact that the Gems told Steven they didn't.
 * Though it's possible they could have been lying, or they just didn't want to make Steven feel like they're bad role models.
 * It is possible that the EMP device and possibly the Flask Robonoids are Peridot's "weapons," as they pulled the EMP device from their gem.
 * Unlike most summoning, Peridot's gem didn't glow or emit a sound when they "summoned" an EMP device.