That's what you think! I'm an eternal flame, baby!

—"Keystone Motel"

"Ruby" is a Crystal Gem that debuted in "Jail Break", but had a small cameo in Fusion Cuisine. She is currently fused with Sapphire as Garnet.


Ruby has light-crimson skin and maroon hair. She wears a maroon tank top, a matching colored headband around thick and fluffy, outgrown hair cropped at the neck, mid-thigh length burgundy shorts, and short, pointed maroon boots similar to Amethyst's. She is a few inches taller than Steven.


She embodies Garnet's fury and courage, contrasting Sapphire, who rather embodies Garnet's cool nature, discipline and kindness. She seems to not be very conversant, a trait which she carries onto Garnet, as Ruby mumbles and speaks somewhat awkwardly. She is shown to be very hot-headed, and has a very short temper. Ruby is very dramatic as well, even referring to herself as an "eternal flame". Ruby also places much value in trust and fusion, being absolutely outraged with Pearl when she learned she was tricked into fusing into Sardonyx and angered at the revelation of Peridot's experiments.

According to Rebecca Sugar, Ruby "has no sense of what’s going on around her" and "can only focus on one thing only at the expense of all things".[1]


File:Ruby's weapon-0.png

Ruby possesses standard Gem abilities and traits. Ruby can fuse to form Garnet, Sugilite, Alexandrite and Sardonyx. Ruby seems to possess a higher degree of strength than most Gems, as she was able to shake the walls of her prison with a single punch, lift Sapphire with little effort in "Jail Break", and flip a diner booth table with relative ease in "Keystone Motel".


  • Gauntlet[2] Proficiency: Through sheer anger and feeling the need to release this through violence, Ruby is able to summon her gauntlet. Although only seen once in the series, it is clear that Ruby possesses some knowledge of how to use it.

Unique Abilities

  • Thermo-regulation: Ruby is able to increase her core temperature. This is shown in "Keystone Motel", when her body gets so hot that it begins burning the carpet of the motel room, and when she boils the pool to nothing but steam in a very short amount of time. It is also shown to relate to Ruby's anger because when she gets furious, she increases her temperature subconsciously.

Color Palettes

Image Description
Ruby's day/regular color palette.

Image Description
Ruby's color palette at night.



Sapphire... No, no no no no no! This is all my fault! I-I didn't want to look for a solution, I-I just wanted to be mad! Y-You're right! You're always right! I was being stupid!

—"Keystone Motel"

Ruby, embracing Sapphire.

She and Sapphire have a romantic relationship, shown in "Jail Break", when she immediately panics when realizing that the two have been separated and becomes reckless trying to find her, trying to pass through the energy field (as hinted by the screams of pain heard in the beginning of the episode), running around without checking if Peridot and Jasper are around and loudly shouting for Sapphire whenever she stops singing. When she finds Sapphire, the two embrace and Sapphire kisses away Ruby's tears, showing their romantic relationship. Ruby cares strongly for Sapphire's well-being as she expressed deep concern for possible injury. Garnet's dialogue in "Love Letters" implies that Ruby and Sapphire's relationship developed gradually over a period of time. The episode, "Keystone Motel", reveals that their relationship can be strained at times due to Sapphire's future vision causing her to be preoccupied with the outcome of events, instead of the events as they happen. This puts her at odds with the passionate Ruby who very much lives "in the now". In the said episode, Ruby was furious over Pearl's deception in "Cry for Help", but Sapphire wasn't because she had seen that in the future they would all get along again- this greatly irritated Ruby as she felt that Sapphire was acting cold, uncaring, emotionless and distant.

Steven Universe

No! Steven, it's all us!

—"Keystone Motel"
File:KeystoneMotel nogoodnamefound.png

At first, Ruby seemed cold and distant towards Steven due to wanting to find Sapphire as quickly as possible. Despite this, Ruby cares deeply for Steven, as shown when she tries to tell him not to put his hand through the force field for his own safety. Also, Garnet says that both her and Sapphire had already loved Steven when he asked if he made a good first impression. She was also upset by the fact that their plan of revealing themselves on Steven's birthday had failed, apparent when she said to Steven, "Oh, great! This is just perfect!" and "Don't look at me". In Keystone Motel, she obliges in Steven's attempts to calm her down, and upon seeing how Steven was affected by her and Sapphire fighting, Ruby and Sapphire both felt very guilty and made up.

Crystal Gems

You met Ruby and Sapphire?!

Amethyst, "Jail Break"

Pearl and Amethyst have been aware of Garnet's true identities for several millennia. Their perception of the two while separated remains unknown, but given their good relationship with Garnet, it can be assumed it is a positive one. Ruby holds a great deal of trust and respect for their teammates and becomes furious when Pearl betrays that trust in "Cry for Help".

The Cluster

So this is what Homeworld thinks of fusion!

Garnet, "Keeping it Together"
Upon encountering The Cluster, Ruby and Sapphire were both disturbed to the point of almost unfusing. While Ruby reacted with the most verbal anger and outrage at what Gem Homeworld had done to their fallen friends, it was Garnet's right eye that represents Ruby that started crying indicating that she was deeply saddened as well.


She lied to us so we'd form Sardonyx! She tricked us; don't you feel used?!

—"Keystone Motel"

Not much is known about the relationship between Ruby and Pearl, except during "Keystone Motel", where Ruby feels used after Pearl tricked Garnet to fuse with her by rebuilding the Communication Hub twice. Ruby was very angered by this, which contrasted Sapphire's opinion of wanting to forgive Pearl, even leading to them unfusing.

Greg Universe

Oh boy... Where's the other one?

Greg Universe, "Keystone Motel"

Not much is known about her relationship with Greg, but Greg at least knew that she and Sapphire were the fusion components of Garnet, and considering most humans aren't close enough to her to know this knowledge this at least shows he knows her rather well.

Lapis Lazuli

Not much is known of Ruby's specific opinion on Lapis Lazuli, however, if it is anything like Garnet's, she is rather indifferent about her and would possibly look at her as not much of an ally but not much of an opponent either. However, based on the line "Oh, it's just you!", she seems to face Lapis in a more negative light.


Season 1

Season 2



Main article: Ruby/Quotes


File:Steven.Universe.S01E32.Fusion.Cuisine.720p.WEB-DL.AAC2.0.H.264-RainbowCrash.mkv snapshot 07.40 -2014.11.12 23.12.05-.png
HD Ext. Full Theme 37
  • Garnet and the other Crystal Gems had planned to wait for Steven's birthday to introduce Ruby and Sapphire to him.
    • It is unknown whether or not they will still do this.
  • Although she was not formally introduced until "Jail Break", her silhouette, along with Sapphire's, can be seen when Alexandrite unfuses in "Fusion Cuisine". To the left of "Garnet" is seen as Ruby, and to the right of "Garnet" is seen as Sapphire.
  • Most of Garnet's sensitive side seems to come from Ruby; whenever Garnet cries, her tears fall from her right eye (the red-colored one) that represents Ruby.
    • Also, Ruby cried when she and Sapphire met again in "Jail Break", while Sapphire herself appeared to remain calm, also in "Keeping it Together" after meeting the Cluster Gems.
  • When asked if Ruby was blind from when she says "I can't see", Joe Johnston merely stated that she was "used to being fused with Sapphire, and so, used to having two types of vision."[3]
  • Ruby is the birthstone of the creator of Steven Universe, Rebecca Sugar.
  • Ruby and Sapphire both lack stars or diamonds on their outfit.
    • This is explained in "Story for Steven". The Crystal Gems seemed to not have adopted the star symbol until after Rose Quartz's death, and Ruby and Sapphire have been fused since before then.
  • It is possible that Ruby and Sapphire both have rooms in the Crystal Temple, due to the fact that they both have their corresponding gemstones on the Temple Gate.
  • Ruby's gemstone location is not symmetrical, along with Sapphire's.
    • When fused as Garnet, however, their combined gemstones become symmetrical in relation to each other.
  • During times of great conflict of opinion, she and Sapphire are able to talk to each other individually through Garnet, as shown in "Keeping it Together" and "Keystone Motel".
  • In the extended theme song, Ruby is shown to be cracking or holding her knuckles, a sign of toughness, or that she's ready to fight, while Sapphire is holding her hands together, interlocking her fingers. This shows that she is calm, graceful and passionate. On the other hand, Ruby seems calmer than expected from her, and Sapphire more upbeat than usual, possibly indicating that being Garnet brings balance to their personalities.
  • Ruby is denser than water, and, as such, she sinks in the pool in "Keystone Motel".
    • This is according to the ruby gemstone, that also sinks in water.
  • Ruby's gauntlet may resemble the superhero Hellboy's "Right Hand of Doom".
  • Ruby's thermo-regulation of raising the temperature directly opposes Sapphire's thermo-regulation of lowering the temperature, representing their polar opposite personalities.
    • Ruby's ability to raise the temperature is somewhat of a pun being that in the episode "Keystone Motel" Ruby is quite literally letting off steam, and acting like a "hot-head", this is also shown when Sapphire says "she'll burn herself out eventually."
    • Ruby and Sapphire's relationship is similar to the phrase "fire and ice", with Ruby representing the fire with her temper and her ability to raise temperatures.
  • Although Ruby's gem is in her left palm, she is shown summoning her gauntlet on her right hand.
    • Ruby is most likely able to summon gauntlets for both hands.
  • Ruby is voiced by Charlyne Yi, who voices Chloe Park in We Bare Bears, another Cartoon Network original series.


Gemstone Information

  • Ruby is a gemstone of emotion, associated with passion, strength and anger. This shows in Ruby's emotional temperaments and overall emotional/angry attitude as well as her strength.
  • Ruby is the birthstone for those born in July and is also the zodiacal stone for Capricorns.
    • Ruby is also used to celebrate the fifteenth and fortieth wedding anniversaries.
    • The day assigned to ruby is Tuesday (hence the Rolling Stones song, "Ruby Tuesday").
    • Ruby is assigned to the planets, Mars and Pluto.
  • Since ruby is a member of the corundum group, it is closely related to sapphire and thus shares some properties, such as hardness, composition and double refraction, with sapphire.
  • The vivid red color of ruby means that it is associated with desire, and it is thought by some to be a stone of love with an aphrodisiac effect.
  • Ruby can be identified by its hardness of 9 on the Mohs scale, and vibrant colour.
    • Natural ruby can be distinguished from synthetic ruby by its inclusions; natural ruby typically exhibits inclusions, whereas synthetic ruby tends to be eye clean.


Image Description
Ruby's gemstone is located on the palm of her left hand, featuring a squared facet. The front and back are symmetrical, and it has a light pink ring around it, which is usually hidden inside her body unless she's regenerating. It is a decahedron, specifically a truncated tetragonal dipyramid.


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  1. Newsarama - New STEVEN UNIVERSE Episodes Beginning Of New Era For Show Says REBECCA SUGAR
    Lan Pitts, Juny 12th, 2015
    Nrama: I think we’re almost out of time, so real quick if you were a Gem, what would you be and why?
    Sugar: I would be a Ruby because, yeah, the way that she is sort of frantic and extremely neurotic, but also really excitable and Ruby is pretty based on me in that way. Ruby also has no sense of what’s going on her around her [laughs] and she can only focus on one thing only at the expense of all things, which is how I function for better or for worse.
ve Crystal Gems

Redo PearlNav Redo SapphireNavv2 FusionTemplateGarnet3 RubyNavv3 AmethystNavNew
Peridorito Infobox Stereo Lapis Infobox Stereo Bismuth - Navi
Biggs Jasper Nav icon SnowflakeObsidianNavbox NavboxCrazyLaceFixed LarimarNAV
ConnieNavbox Lion head


Redo RoseNav

ve Characters in Steven Universe
Crystal Gems Human-Gem Hybrids: Steven

Unfused Gems: AmethystBiggs JasperBismuthLapis LazuliLarimarPearlPeridotRubySapphireSnowflake Obsidian
Gem Fusions: AlexandriteCrazy Lace AgateGarnetMega PearlObsidian (Rose Quartz Fusion)OpalRainbow QuartzSardonyxSugilite
Hybrid Fusions: Obsidian (Steven fusion)Rainbow Quartz 2.0Smoky QuartzStegStevonnieSunstone
Inactive Gems: Rose Quartz
Humans: Connie Maheswaran
Pets: LionPumpkinCat Steven

Homeworld Gems Unfused Gems: CombyEmeraldPebblesPeridotsSapphiresSpinel

Fusion Gems: MalachiteTopazZebra Jasper (fusion)Giant RubyRuby (triple fusion)Lemon JadeBluebird Azurite
Inactive Gems: Pink Diamond

Off Colors Unfused Gems: PadparadschaRutile Twins

Fusion Gems: FluoriteRhodonite
Humans: Lars Barriga

Other Gems (Formerly) Corrupted Gems: Angel Aura QuartzBig Bird • Biggs Jasper • BixbiteBlue Lace Agate • Cherry Quartz • Desert GlassEarth BeetleFlower MonsterGem Cave CreatureHeaven BeetleInvisible Gem Monster • Jasper • Lace Amethyst • Larimar • Lighthouse Gem Monster • Nephrite • Ocean JasperOrange SpodumenePlant MonsterPyramid Temple GemThe Slinker • Snowflake Obsidian • Tongue MonsterUnknown Giant Gem MonsterWater BearWatermelon TourmalineZebra Jasper (singular)Others

Other Gems: Minor GemsUnknown Gems (Morganite • Nephrite-XJ Cut-763 • Unknown Quartz Warrior • Blue Diamond's Court • Pink Diamond's EntourageUnknown Crystal Gems67 Elite CitrinesPyritesHessonites, Demantoids, and PyropesKyanites)

Gem Fusions: Cluster Gems (The Cluster)

Comic Gems: Ant Gem MonsterClock Tower GemFrozen FragmentGlass GhostInvisible Manta RayMole Gem MonsterMolluskMonster Lizard GemObeliskOld Book GemPlant MonsterPerils of PweepweeRainbow Cloud MonsterRed Bird Gem MonsterRed Eel MonsterScorching ShardSlime Gem MonsterSlug MonsterSnowbeastTentacle MonsterUnknown Giant Bird

Other Major Characters Humans: Greg UniverseSadie Miller
Recurring Characters Humans: Andy DeMayoBarbara MillerBill DeweyBuck DeweyBuddy BuddwickDante and Martha BarrigaDoug MaheswaranDr. Priyanka MaheswaranHarold SmileyJamieJaneJenny PizzaKevinKiki PizzaKofi PizzaMartyMr. FrymanMystery GirlNanefua PizzaOnionPeedee FrymanQuentin FrowneyRonaldo FrymanShepSour CreamSuitcase SamVidaliaYellowtailZoomans

Other: Baby MelonBlue CrabCactus StevenHolo-PearlMagic MossSteven Jr.Watermelon Stevens

Minor Characters Humans: The Best Diner in the World's WaitressEmpire City Wildlife Rehabilitation Center EmployeeGaryGreg's family (Aunt and Uncle • Aunt DebGrandfatherParents) • Hospital Employees (Dr. GeroDr. StrombergDr. West) JeffKhajima, Jaime, and BrandishMarty's RoadiesMayoral BodyguardsMike KrolOnion's Friends (Garbanzo • Pinto • Soup • Squash) • Patricia and DanielRickySabinaSteven's BabysitterSunshine JusticeWilliam Buford BuchananWilliam DeweyMinor Human Characters

Other: Blue CrabsButt LobsterCrystal BasiliskDogMask Island FishOnion's MouseOnion's SnakeParty GuyRaccoonSeagullsSnakeSteven The ThirdSusanMinor Animal Characters
Aliens: Beetle AliensBird Blob AliensUngulate AliensWorm AliensFlower-Like AliensMinor Alien Characters

Fictional Characters Cookie CatDogcopterMearlPizza JennyMinor Fictional Characters

Camp Pining Hearts: PaulettePercyPierre
Garnet's Universe: FoxmanHopperHoppyRingo
Golf Quest Mini: AceAce's Father
Li'l Butler: Li'l ButlerMr. MoneyMrs. MoneyDaughter Money • Dirtbike Money
Lonely Blade: Evil JanitorLonely BladeLonely Blade's Brother
Rose's Room: Cloud ConnieTiny Floating Whale
The Spirit Morph Saga: ArchimicarusLisaPlinkmanWind Lizard

Antagonists CentipeetlesCrab MonstersCrystal ShrimpDrill ParasitesElectric SkullsFryboRed EyeRobot Shooty ThingSmoke MonsterVine Monsters
Alter Egos Billy Bank AssetsChunk TruckConcrete HeatDashing Danny DooberHandsome Hank HackleschmidtHowl JonesLoch Ness BloggsterPurple PumaSea WaspShark-O-ManiaTiger Millionaire
Attack the Light Blue LightGreen LightIndigo LightOrange LightRed LightViolet LightWhite LightYellow Light

Groups: Light ArmyBlue Monsters • Green Monsters • Indigo MonstersOrange MonstersRed Monsters

Save the Light Hessonite • SquaridotHessonite's Citrines
Unleash the Light DemantoidPyrope
The Phantom Fable Fable • Lonely PearlJasper (Eyeball)
Groups Cool Kids • Crystal GemsCrystal Temps • "Famethyst" • Great Diamond Authority • Homeworld Gems • Hospital EmployeesOff ColorsOnion's FriendsPebblesSadie Killer and the SuspectsSecret Team • Steven and the Stevens • Water ClonesZoomansMinor Human CharactersMinor Animal CharactersMinor Fictional CharactersMinor Gem CharactersMinor Corrupted GemsSpeciesUnknown Gems
Gem Types Aquamarines • BismuthsDiamonds • GarnetsJades • Lapis Lazulis • Nephrites • Pearls • PebblesPeridots • Quartzes • Rubies • Sapphires • Topazes

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