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This article is about the object. You may be looking for the episode or the soundtrack .

The Gem Drill is a subterranean drill built by the Crystal Gems with the purpose of drilling to the core of the Earth and stopping the Cluster. It first appeared (as several uncombined components) in "Too Far".

Appearance and description

The drill's physical design is rather straightforward. Its main components are an old injector drill head and Peridot's Escape Pod joined together at the drill's shaft. The escape pod serves as the cockpit for the pilot and passengers of the drill.

The drill has three long metal legs, used for moving and climbing. It also has a blast cannon on top of the pod.


"Back to the Barn"

The Gems brainstorm and come up with a conclusion that they need to build a drill to dig into the center of the Earth to save the world from the Cluster before it hatches.

"Too Far"

Peridot and the Gems officially start to building the drill. The base for the drill is an Injector drill head from the Prime Kindergarten. Peridot accidentally starts the drill head and almost injures Amethyst, destroying everything that the Gems had worked on so far.

"Steven's Birthday"

Whilst Garnet, Amethyst, and Pearl celebrated Steven's birthday, Peridot continued working on the drill.

"It Could've Been Great"

The Gems and Peridot finally finish its construction, and all they needed was the exact coordinates of the Cluster. They travel to an abandoned Gem Moon Base to find them.

"Log Date 7 15 2"

The drill is shown under construction during flashbacks. Peridot is seen programming the escape pod with a computer. Amethyst and Pearl fuse into Opal, who picks up the drill head and sets it on some supports.

"Gem Drill"

Steven and Peridot finally use the drill. It is seen penetrating into the asthenosphere effortlessly, and though some Cluster Gems attack the drill, Steven shoots them with the drill's blast cannon, destroying their physical forms. They finally enter the spatial region inhabited by the cluster, but it is absolutely powerless against piercing even the surface of it and only manages to dislodge a few gem shards.

The drill utilizes three drill bits, two of which detach by accident as it attempts to destroy the cluster. Ultimately, the drill is not needed to destroy it but only to reach it, as Steven talks to and manages to bubble the Cluster with its help. Successful in saving the Earth, the two climb back to the surface with the drill's legs.


  • It is first mentioned in "Back to the Barn" that the drill will need to withstand up to 360 gigapascals of pressure and temperatures up to 9,800 degrees.
  • The gems used parts from some Russian tech when building the drill. In the drill's cockpit, there are buttons in Russian print saying: "БЛ ПОК", "ЦИФРЫ" (numbers), "КОНТР1" (control1), "ПАРАМ2" (parameter2), and "СХЕМА3" (circuit3).
  • The drill uses a drill head from an Injector once used at the Kindergarten.
    • Pearl jokes that the technology that started the Cluster crisis is now going to be used to end it.[1]
    • According to Peridot, the drill is composed of mostly carbonate. In real life, carbonite is an explosive mixture used in mining. However, in fiction, it is the metallic substance used to freeze Han Solo in the Star Wars franchise.
  • The microwave from the Beach House has components used in the drill, especially its magnetron.
    • Magnetrons are also found in old radar technologies, which may explain the Gems' use for it.
  • Tungsten, a component for the drill, is known for having the highest melting point of all the pure metals, this case being 3,695 K (3,422 °C, 6,192 °F).[2]
    • This material also has an elastic modulus (force needed to temporarily deform an object) of 400-410 gigapascals, being one of the highest among any known material.[3]
  • Pearl did not approve of a blast cannon to be installed on the drill, but Peridot said she never leaves home without a blaster.


Click to view the gallery for Gem Drill (object).

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Food & Beverages Bagel SandwichBeastChaaaapsCheese BallsColonel Kernel's Classic Creamed CornCookie CatDog-NutDrink UpDurian JuiceFantastic FriesFry BitsGuacolaHynes KetchupLion LickersMargarineNut-DogPizza BagelPop-PopPotato ChipsSadie's LunchesSpicy PretzelsSugar Shock Shut DownTogether BreakfastUbeWaflWhip It UpYummy Apple Juice
Magical Items Crystal Heart • Data Stones • Diamond Aura BottlesEternity ChaliceEvil Spirit ScrollFire SaltGarnet's GogglesGem BubblesGem PedestalsGem ShardsGemstonesGeode • Harmony Core • The HourglassLight PrismThe MirrorMoon Goddess StatueObeliskOld Book GemThe Perils of PweepweeShooting StarVolatile GemsWailing StoneWarp Pad
Musical Instruments Amethyst's DrumsConnie's ViolinGarnet's KeytarGreg's GuitarPearl's ViolinSteven's UkuleleWarp Whistle
Weapons The Axes of AgesBreaking PointConnie's SwordGem DestabilizerGem RejuvenatorGem WeaponsLaser Light CannonPearl's SwordsQuartizine TrioRose's Sword
Holding Items Cheeseburger BackpackHot Dog Duffel BagRose's ScabbardRose's Treasure ChestTiger Millionaire's Suitcase
Vehicles Earth: Andy's Plane • Dondai SupremoGreg's VanHandmade SpaceshipInflatable RaftJenny's CarHot 2 TotOnion's Moped • Steven's BikeS.S. MiseryThe Universe Mach 3

Homeworld: Aquamarine's ShipAttack PodDestiny DestroyerDiamond Palanquins (Blue Diamond's PalanquinPink Diamond's Palanquin) • Diamond Ships (Blue Diamond's ShipPink Diamond's ShipWhite Diamond's ShipYellow Diamond's Ship) • Emerald's Personal Shuttle • Escape PodGem Warship • Hessonite's Warship • Homeworld Dropship (Ancient Gem Colony Ship) • Roaming Eye
Crystal Gems: Gem DrillGem Sloop
Off Colors: Sun IncineratorStar Skipper

Rides The AppalachianHyper SpaceJelly JigglerThe TeacupsTsunami
Games Citchen CalamityGolf Quest Mini

Arcade Games: Chrono Panic 4Meat Beat ManiaPunch BuddyRace RushRoad KillerSkee BallTeens of RageVirtua Teens of RageWhacker ManWhacker Man Jr.

TV Shows Camp Pining HeartsCanine CourtCrying Breakfast Friends!I Can't Believe My Stepdad's My SwordKoala PrincessLi'l ButlerUnder the Knife
Books BrigandBuddy Buddwick's JournalCarrion Amongst The CloverFOINEHow to Talk to PeopleNOICEThe No Home BoysPassions of XanxorPretty HairstylistThe Spirit Morph Saga (The Unfamiliar Familiar)
Movies Dogcopter 3Evil Bear 2: Bearly Alive • Lonely Blade (Lonely Blade IVLonely Blade V)
Toys Bass Fish Toy • Water GunMinor Toys

Plush Toys: Master of Ceremonies Bear Bear • M.C. Bear Bear • Mr. Queasy • Peridot's Alien • Playful KittySir Bearington
Action Figures: B.O.Y.S.G.A.L.S. (Explorer Gal) • G.U.Y.S. (Dave Guy • Ranger Guy)
Props: Cluster PuppetGiant Cellphone PropJungle BucksWall Street Newspaper Prop

Machines Crystal Gem Machines: Pearlbot
Homeworld Machines: Gem SatelliteRed EyeInjectors (Attack InjectorsSpinel's Injector) • Shattering RobonoidsShell
Peridot's Machines: Crystal Gems: Attack DronesPeribotVisor Robonoids
Homeworld: Robonoids (Flask RobonoidsHand RobonoidPlug Robonoids)
Other Machines: Harmony Core Sentries • Robot Shooty Thing
Misc. Items Aquamarine's WandThe Armor of the FallenBeach City StageBlue Diamond's Personal EffectsConnie's Glow BraceletChalkboardCurrencyDiamond CommunicatorDuct TapeFryboGiant PennyGreg and Rose's PictureGreg's Music CollectionG.U.Y.S. DispenserHarpoon GunThe Heretic's AnguishLimb EnhancersLubitz Cardioid Condenser 680Metal MuttMr. Universe ShirtNietzche's BreakdownOld Gem PaintingOnion's Birthday TapePearl's TreePeridot's Voice RecorderPink Diamond's Personal EffectsPink Pearl's Ribbon WandReplicator WandRonaldo's PhoneRose Quartz's Video TapeRose's Battle FlagRose's PaintingSea PalsSpace Train to the CosmosSteven's Birthday SuitSteven's MugSteven's PhoneSteven's TVSteven's Video Game SystemsTag Team BeltTelescopeTemple GateTubeTubeT-Shirt CannonVIP(IZZA)Weirdstar.StreamYellow Diamond Signal Flare


  1. "Oh, it's lovely! To think we'd be using the same technology that started all this to fix it! This drill is pure irony!" – Pearl
  2. Tungston on Wikipedia
  3. Modulus of Elasticity or Young's Modulus – The Engineering Toolbox