Lapis Lazuli/History

Not much is known about the early history of Lapis Lazuli, except that she was trapped in the mirror. She is firmly convinced that the Crystal Gems knew she was there. Lapis' gemstone was apparently damaged after she was trapped, which impaired her abilities.

Season 1
"Did you even wonder who I used to be?!"

Being imprisoned in the mirror, which used her gem to power it, Lapis was an object that recorded all Gem history and culture witnessed in the reflective side, spending a long period in solitary confinement during her imprisonment in the mirror. Eventually, the mirror was found by the Crystal Gems at the Galaxy Warp and kept by Pearl.

In "Mirror Gem", the mirror was handed over to Steven by Pearl so he could learn about Gem culture. When Pearl was not able to activate it, she assumed that it was broken. However, when away from Pearl, Lapis Lazuli revealed herself to Steven by talking to him through the mirror's recordings. Lapis was then able to communicate with Steven, persuading him to free her. Steven released her physical form and individual consciousness by removing the gemstone from the back, shattering the mirror. When discovered by the Crystal Gems, she asked Steven to return "home" with her, to which he is not able to respond. Disappointed by his apparent rejection, she escaped into the ocean before she could be recaptured.

In "Ocean Gem", Lapis drew all the world's oceans into a spire in an attempt to reach all the way to Homeworld. She fought the Crystal gems from atop the spire by creating Water Clones to attack them. However, Steven managed to persuade her to talk, and used his saliva to heal her cracked gem. Thanking Steven, she forms wings of water and flies off into space, to return to Homeworld.

In "The Message", Lapis sent a video message via the Wailing Stone warning Steven that Peridot was coming to Earth with another Gem. Lapis urged Steven and the Crystal Gems not to put up a fight, as Gem technology had advanced since she had last been to the Homeworld, and a fight would only lead to devastation.

In "The Return", she was brought to Earth by Peridot and Jasper aboard the Gem Warship against her will. She was sent to Earth with Peridot as an informant.

In "Jail Break", Lapis was imprisoned in a ship jail cell after Jasper believed Lapis had witheld information from her. When Steven tried to free her, she believed it was for the best that they did not try to escape and remained in her cell. After the ship was destroyed, she attempted to flee, but was caught by Jasper who asked Lapis to fuse with her, saying that the Crystal Gems were traitors and used her. After considering the offer, she seemingly agreed, however after fusing, she revealed that she fused with Jasper into Malachite so she could trap both of them at the bottom of the sea.

Season 2
In "Love Letters", Garnet mentions that she had been searching the ocean floor for Lapis and Jasper, but thus far hadn't found any trace of them.

In "Chille Tid", Lapis is shown to be able to communicate with Steven through his dreams. Lapis states that she does not want Steven and the other Crystal Gems to find her because she is committed wholeheartedly to staying fused as Malachite in order to prevent Jasper from escaping or gaining control of Malachite.

Season 3
In "Super Watermelon Island" the civilization of Watermelon Stevens on Mask Island attempt to sacrifice one of their number to Malachite in an effort to stop the earthquakes that troubled the island. Thanks to Steven's vision of the event, the Crystal Gems track her down, and fuse into Alexandrite to fight her. Malachite is defeated and forcibly defused by the gems, with aid of the Watermelon Stevens. During the final moments of the fight, a Cluster-related earthquake took place, but the unconscious Lapis was caught by Amethyst and later taken back to the Barn.