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The Prime Kindergarten Control Room is a location underneath the Prime Kindergarten, first seen in "Marble Madness". It is the control room of all operations in the Kindergarten, and it housed countless Cluster Gems. It also contains Peridot's logs up to log date 6 5 2, which has information on the Cluster.


The Prime Kindergarten Control Room is used to supervise the Kindergarten. From this room, the Kindergarten's injectors can be turned on or off. A power source housed at the back of the room has many pipes protruding from it, but it only seems to power the room itself. The room also seems to have a backup power source, activated in "When It Rains".


The room is a large, green hexagonal shape. The back wall contains the power source, which appears to be a gemstone. A green pedestal similar to Rose's Pedestal, the pedestal in Rose's Secret Armory, sits near the center of the room when raised. It has Yellow Diamond's insignia on the palm. When powered, the edges of the room glow neon yellow, tinted green (with imperfect power, they glow more dimly).


  • Before "Marble Madness", the Crystal Gems did not know that the room existed.
    • They also did not know of the Gem experiments before "Keeping It Together", when Peridot first checked on them. According to Peridot, a few hundred years of reports were made and stored in the place.
  • In "When It Rains", the lift is not used to enter or exit the control room.
    • The episode also reveals that the green pedestal can be lowered to the height of shorter Gems.
  • Despite the main power source being destroyed by the Crystal Gems, Peridot is able to restore power to the room, at least to a degree.
    • The backup source of energy is hidden behind a panel on one of the screens. Peridot claims that the power is adequate, mainly since the room now glows very dimly. The screens are still completely functional.


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Beach City Businesses: Aqua-MexicanBeach City Funland (Funland ArcadeWiener in Hand/Hot Dogs) • Beach Citywalk FriesBeach City WoodsBig DonutBuddwick Public LibraryClassic ThymeCrab ShackDanny'sFish Stew PizzaIt's a WashMini-Golf CourseSpacetriesSuitcase Sam'sT-Shirt ShopU-Stor

Residences: The BarnBarriga ResidenceCrystal Temple (Beach House) • Miller ResidenceOnion's House
Other: Abandoned WarehouseBeach City PierBeach City StageBeach City WoodsBrooding HillDead Man's MouthLighthouseMayor's OfficeUnderwater SwordWater Tower

Crystal Temple and the Beach House Amethyst's ChamberAmethyst's RoomBurning RoomCrystal HeartGarnet's ChamberPearl's ChamberPearl's RoomRose's RoomSteven's BathroomSteven's ConservatorySteven's RoomSardonyx's Room
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Other: Cram School • Cool RanchHospitalMaheswaran Residence • Space Camp • Starlight Roller Rink

Space Locations Earth • Gem HomeworldJungle MoonKlavius 7Pink Diamond's ZooUpsilon 9Unknown Ocean planetUnknown Resort PlanetUnknown City planetUnknown Jungle Planet
Gem Locations Earth: Ancient Gem Colony ShipAncient Sky ArenaBeta KindergartenCloud ArenaCommunication HubDesert (Rose's Landfill) • Flower MeadowForgeGalaxy WarpGem BattlefieldGeodeGreat NorthIce CavernKindergartens (BetaPrime) • Little HomeworldLunar Sea SpireMask IslandPearl's ArenaPearl's TreePrime Kindergarten (Prime Kindergarten Control Room) • Pyramid TempleRose's FountainRose's Secret ArmorySand FortressSea ShrineSky Spire

Earth's Moon: Earth Moon Base
Jungle Moon: Jungle Moon Base
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The Phantom Fable Locations Abandoned Ward • Arcane Acropolis • the Barn • Beach City (Beach City Woods) • Buried Bastion • Delta Kindergarten • Forgotten Forest • Library 9
Unleash the Light Locations Crystal System Colony 215 (Kindergarten) • Demantoid's World • Pyrope's World (Blue 4) (Palace of Light)Yellow 4
Comic Locations Antarctic Harmony Core Temple • Canary CoveClock TowerEmpire City Wildlife Rehabilitation Center • Harmony Core Temple • Moors of MarcoonUniverse Family Camping GroundTemple of the Frozen Fragment and Scorching Shard