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"How Are Gems Made?" (full title: "The Classroom Gems: How Are Gems Made?") is a short released on Cartoon Network's website. The short features Amethyst, who teaches the viewer and Steven about how Gems are made.


Amethyst explains how Gems are made.[1]


Amethyst and Garnet educate Steven on the true nature of the Kindergartens' Injectors and Gem lifecycles. Amethyst explains that Gems are created by Homeworld through Injectors. She also states that to emerge fully matured, as infancy and adolescence would be a disadvantage, Gems absorb all the available energy around them. Before they can explain any further, Pearl awkwardly interrupts and exclaims that this process of Gem production left many scars on the Earth. She also states that the Crystal Gems are doing whatever they can to counteract the damage that Homeworld dealt onto the planet. Before Pearl can make the situation even worse, Garnet escorts her off the screen. The video ends with Steven questioning if Gems could be babies, only to have a dunce cap fall on his head.



  • This short confirms that Gems don't emerge as babies. Instead, the Kindergarten Injectors take the energy of the surrounding area to mature and strengthen the Gems in development.

One of Amethyst's shapeshifted forms, a baby.

  • This is the second time any Steven Universe character has officially been portrayed as a "chibi" version of themselves, the first being "What Are Gems?".
    • By extension, this is also the second "Classroom Gems" short after "What Are Gems?".

Cultural References

  • The short is a homage to the Gunbuster OVA Omake "Science Lessons".[2]
    • It is also a reference to how when parents often have "The Talk" about the birds and the bees with their children when they come of age. Usually, they start it off with this phrase, now considered cliché.


View the episode's transcript here.


Click to view the gallery for How Are Gems Made?.


ve Episode List
Pilot Pilot
Season 1 A: Gem GlowLaser Light CannonCheeseburger BackpackTogether BreakfastFryboCat FingersBubble BuddiesSerious StevenTiger MillionaireSteven's LionArcade ManiaGiant WomanSo Many BirthdaysLars and the Cool KidsOnion TradeSteven the Sword FighterLion 2: The MovieBeach PartyRose's RoomCoach StevenJoking VictimSteven and the StevensMonster BuddiesAn Indirect KissMirror Gem/Ocean Gem

B: House GuestSpace RaceSecret TeamIsland AdventureKeep Beach City WeirdFusion CuisineGarnet's UniverseWatermelon StevenLion 3: Straight to VideoWarp TourAlone TogetherThe TestFuture VisionOn the RunHorror ClubWinter ForecastMaximum CapacityMarble MadnessRose's ScabbardOpen BookShirt ClubStory for StevenThe MessagePolitical PowerThe Return/Jail Break

Season 2 Full DisclosureJoy RideSay UncleLove LettersReformedSworn to the SwordRising Tides, Crashing SkiesKeeping It TogetherWe Need to TalkChille TidCry for HelpKeystone MotelOnion FriendHistorical FrictionFriend ShipNightmare HospitalSadie's SongCatch and ReleaseWhen It RainsBack to the BarnToo FarThe AnswerSteven's BirthdayIt Could've Been Great/Message ReceivedLog Date 7 15 2
Season 3 Super Watermelon Island/Gem DrillSame Old WorldBarn MatesHit the DiamondSteven FloatsDrop Beat DadMr. GregToo Short to RideThe New LarsBeach City DriftRestaurant WarsKiki's Pizza Delivery ServiceMonster ReunionAlone at SeaGreg the BabysitterGem HuntCrack the WhipSteven vs. AmethystBismuthBetaEarthlingsBack to the MoonBubbled
Season 4 Kindergarten KidKnow Your FusionBuddy's BookMindful EducationFuture Boy ZoltronLast One Out of Beach CityOnion GangGem HarvestThree Gems and a BabySteven's DreamAdventures in Light DistortionGem HeistThe ZooThat Will Be AllThe New Crystal GemsStorm in the RoomRocknaldoTiger PhilanthropistRoom for RubyLion 4: Alternate EndingDoug OutThe Good LarsAre You My Dad?I Am My Mom
Season 5 Stuck TogetherThe TrialOff ColorsLars' HeadDewey WinsGemcationRaising the BarnBack to the KindergartenSadie KillerKevin PartyLars of the StarsJungle MoonYour Mother and MineThe Big ShowPool HoppingLetters to LarsCan't Go BackA Single Pale RoseNow We're Only Falling ApartWhat's Your Problem?The QuestionMade of HonorReunitedLegs From Here to HomeworldFamiliarTogether AloneEscapismChange Your Mind
Film Steven Universe: The Movie
Steven Universe Future Little HomeschoolGuidanceRose BudsVolleyballBluebirdA Very Special EpisodeSnow DayWhy So Blue?Little GraduationPrickly PairIn DreamsBismuth CasualTogether ForeverGrowing PainsMr. UniverseFragmentsHomeworld BoundEverything's FineI Am My MonsterThe Future
Shorts Lion Loves to Fit in a BoxThe Classroom Gems: What Are Gems?We Are the Crystal GemsThe Classroom Gems: How Are Gems Made?UnboxingThe Classroom Gems: FusionCooking with LionGem KaraokeSteven ReactsVideo ChatSteven's Song Time