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Steven Universe Wiki

"The Classroom Gems: Fusion" (referred to as "The Classroom Gems: Special Lesson" in the title card) is a Classroom Gems short.


The Gems teach Steven about Fusion


The episode starts with Garnet punching the title card and yells that she's going to teach the viewers about fusion, thus unfusing into Ruby and Sapphire. Next, Pearl explains about fusion, while the four perform separate fusion dances: Ruby and Sapphire fuse back into Garnet, and Pearl and Amethyst fuse into Opal. Garnet explains further, as Opal loses her balance and unfuses back to Pearl and Amethyst. An irked Pearl berates Amethyst for not collaborating, but Amethyst retorts, doubting Pearl's collaboration. Garnet then shows a clip of the several fusions throughout the show, including Sugilite and Stevonnie. Steven interrupts with a question asking what the main purpose of fusion is. With Garnet's prompt, the Crystal Gems subsequently fuse into Alexandrite, pose, and answer with "Love!" The episode ends with a title card saying "Class Dismissed"




  • Chalk Board


  • Dance Studio



  • TBA

Instrumental Songs

  • TBA


  • This is Opal, Sugilite, Ruby, Sapphire and Stevonnie's third appearance.
    • These are Ruby and Sapphire's first appearances in a Classroom Gems short.
    • This is the first successful on-screen Opal and Alexandrite fusion dance.
  • This marks Alexandrite's second appearance.
  • This episode marks the ninth time Garnet's eyes are shown.
  • This is the third Classroom Gems short after "What Are Gems?" and "How Are Gems Made?"
  • This is the first time we see Alexandrite being formed on-screen (though her fusion dance has yet to be seen, much like Opal).
  • This is the first Classroom Gems short where the venue is not held in a classroom.
  • Neither Opal nor Alexandrite had their new regeneration outfits, despite Amethyst and Garnet already having reformed; this could be intentional to avoid spoilers.
  • This was the first time Garnet has unfused willingly.
  • This was the second short to feature clips of previous episodes from the main series.

Cultural References

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  • When the 3 Gems fuse into Alexandrite, she makes a pose with a background similar to that of the Powerpuff Girls franchise, where a heart background is seen with the girls posing at the end of each episode.
  • The short, as well as "How are Gems Made?" and "What are Gems?", is a homage to the Gunbuster OVA called "Science Lessons".[1]


  • While Garnet was fusing, Ruby and Sapphire's gems switch.
  • Garnet's/Ruby and Sapphire's gemstones on Alexandrite are on the bottom set of arms instead of the top ones.
    • However, there is no rule stating that multi-limbed fusions need to keep their gemstones on the same pair of limbs after every regeneration/re-fusion.
  • When fusing into Alexandrite, Amethyst's Gem goes where Ruby's should be, while Ruby's goes where Amethyst's should be.
  • Despite all the gems appearing to look "chibi", Steven is the only Gem who didn't retain this appearance from the previous lessons.


View the episode's transcript here.


Click to view the gallery for Fusion (short).


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