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I'm Ruby-1F4 Cut-4ND. I fought in the war for Earth.

—"Back to the Moon"

Ruby (specifically Ruby-1F4 Cut-4ND), nicknamed Eyeball by Steven, is a Homeworld Gem who made her debut in "Barn Mates". She fought in the Rebellion over 5,750 years ago against the Crystal Gems. She and the other Ruby troops were sent to Earth by Yellow Diamond to locate Jasper. She is currently on the Gem Homeworld as of the episode "The Trial", after presumably being recovered by Navy.

Appearance

Her outfit consists of the regular Gem Homeworld uniform. She has the lightest complexion among the Ruby troops. Her gemstone replaces her left eye.

Personality

She seems to be the most invested in the mission to track Jasper and is well-informed about her. She is stoic, rarely speaking before "Back to the Moon", though occasionally appearing anxious. She appears intimidating, but is also quite polite when thanking the Crystal Gems for their cooperation. Despite her tough exterior, upon meeting her hero Jasper (really a disguised Amethyst) she was struck with awe and showed an almost fan girl-like zeal.

Like the other Rubies, Eyeball is not very perceptive in recognizing trickery, being easily fooled by disguises or lies. However, she is the only one to be suspicious of Ruby when Ruby kept interacting friendly with Sapphire during their baseball game, eyeing them with an uncomfortable expression. Humorously, she also suspected Leggy, watching her when she was cheerfully standing next to Lapis Lazuli.

Even over her own captain, she is the most experienced in Gem history, the only one to remember the location of the diamond base on the moon and explaining the history of the moon base and Pink Diamond. This is partially due to being the oldest of the Rubies and having fought in the war.

She seems to be insecure about her relationships, as shown when Ruby and Sapphire were talking to each other in Hit The Diamond. As they chatted, Eyeball watched them with a sad look on her face. Another example was when Amethyst as Jasper placed Doc onto her lap when they were heading to the Moon Base, which caused Eyeball to cry.

History

Pre-Series

5,750 years ago, Ruby 1F4 Cut-4ND fought for Homeworld during the war for Earth. During this time thought she saw Rose Quartz shatter Pink Diamond, although unbeknownst to her, it was faked by Pink Diamond herself, the real identity of Rose, and her Pearl.

"Barn Mates"

Eyeball is seen for the first time peeking out of the Roaming Eye, after it is crashed by Lapis Lazuli, shocking the Gems.

"Hit the Diamond"

Eyeball and the other Rubies descend upon Earth looking for Jasper. Upon discovering the barn, they are tricked by Ruby and Steven into believing that only humans live there. They are then told that they can only search the barn if they beat the 'humans' at baseball. After learning the 'humans' were, in fact, the Crystal Gems, Eyeball, along with the other members of her squad, fuse together and demand to know where Jasper is. Upon being falsely told by Steven that Jasper was on Neptune, they defuse, and Eyeball thanks him.

"Back to the Moon"

The Rubies return to the barn, incredibly irate for being tricked about Jasper's location. When questioned by the Crystal Gems, Eyeball refuses to reveal any information. After much badgering about the subject, Amethyst shape-shifts into Jasper's appearance, which deceives the Rubies. It is Eyeball who first greets 'Jasper', sharing her serial number as well as that she originally fought in the war on Earth. She was also revealed to be a long time admirer of Jasper's military accomplishments. On the Rubies' ship, while Amethyst as Jasper talks to Doc, another Ruby, Eyeball is visibly jealous. She believed the Gems' ruse all the way up until the Rubies' departure from the moon base, even feeling flattered that Amethyst-Jasper gave her an important mission, but ultimately Eyeball and the other Rubies saw Amethyst undisguised. The Rubies fused in an attempt to attack the Gems, but were almost instantly dispatched when Sardonyx knocked them out the airlock, opened by Steven. Before flying away, Eyeball pulls Steven out the airlock with her into the vacuum of space.

"Bubbled"

Eyeball manages to hang on to Steven's bubble as they drift through space. After a heated argument, Eyeball tells Steven that she initially could not believe that the Crystal Gems still existed, but grew to realize that it was true if the situation included Jasper and Rose Quartz. Steven tries to explain to Eyeball that he was the offspring of Rose and that he inherited her gemstone, showing her his gem and his shield, but Eyeball does not believe him. They drift into an asteroid field, which results in the cracking of Eyeball's gemstone. Steven pulls her inside of his bubble and heals her, causing Eyeball to believe he was Rose after all. Eyeball then attacks Steven, because Rose had betrayed Homeworld and allegedly shattered Pink Diamond. Eyeball states that she hopes to be rewarded back on Homeworld, possibly with her own Pearl. This forces Steven to eject her from his bubble and send Eyeball spinning through space.

"Mindful Education"

While training at the Sky Arena, Stevonnie experiences a large hallucination of Eyeball, with Steven expressing guilt from being forced to fight her and leaving her in space.

"Room for Ruby"

Garnet initially thought that Navy was Eyeball, and tells Steven not to trust her because she tried to stab him in space, before Steven corrects her.

"The Trial"

Eyeball makes it back to Homeworld, much to Steven's pleasant surprise, after floating through space for so long (likely picked up by Navy who got their ship back). She tells the Diamonds what she knows about Rose Quartz (Steven), and appears as a witness during the trial. At the trial, Eyeball tells the court how Steven said he had Rose's shield and all of her other powers, and then throwing her into space, making Steven appear more guilty.

"A Single Pale Rose"

Eyeball briefly appears in a flashback from the episode "Back to the Moon" where she reveals that she witnessed Rose shatter Pink Diamond.

Abilities

Chisel Knife

Eyeball's chisel knife.

Like most other Gems, Eyeball can change shape, invoke a weapon, take refuge in her gemstone to heal, and adapt to any extraterrestrial environment's gravity. She presumably has the standard abilities of a Ruby, such as thermokinesis, pyrokinetic touch, and heat resistance.

Fusions

Relationships

Other Rubies

Eyeball seems to hold a level of respect and camaraderie for the other rubies: Leggy, Doc, Army, and Navy, as she was shown playing baseball on their team and being part of the troop that was sent to locate Jasper. However, she expressed jealousy or sadness when Amethyst as Jasper sat with Doc instead of Eyeball.

Amethyst

In "Back to the Moon", Amethyst shapeshifts into Jasper to fool the Rubies again, and Eyeball, admiring Jasper, falls for the trick easily. Amethyst, both acting like she believes Jasper would and being her usual joker self, makes the Rubies comfortable in her presence. They sympathize with her story of keeping the Crystal Gems prisoner, crying and clapping because of her apparent devotion. They also joke alongside with her when she pokes fun at Pearl for being talkative, kicks some earth rocks to demonstrate her animosity towards the planet or gives the Crystal Gems the silly nickname, "Crystal Germs". Eyeball herself is elated when Amethyst-Jasper shows her kindness by saying that she is trusted and is not put off by Amethyst's playful personality, though occasionally appearing surprised. When Amethyst exposes herself, Eyeball becomes angry, as she has been tricked and Amethyst is revealed to be a Crystal Gem.

Jasper

As a popular icon on Homeworld, Jasper definitely leaves a good impression on Eyeball. As soon as Ruby sees Amethyst's projection of Jasper in "Back to the Moon", she immediately introduces herself and expresses her admiration for Jasper's achievements. Through their trip through the Moon Base, she seems to brag about her knowledge of the war to impress "Jasper", and it is hinted that her feelings for her are deeper than simple admiration, as she cries when "Jasper" chooses to sit with Doc instead of her.

Steven Universe

Eyeball dislikes Steven, due to the fact that he had helped to trick the Rubies in both "Hit the Diamond" and "Back to the Moon". This is explored more in "Bubbled", where Eyeball becomes irate at Steven for making the Rubies float away. She climbs onto Steven's bubble and says she will beat him up. Initially, Ruby refuses to believe that Steven is the son of Rose Quartz, then attacked him once Steven repairs her gem.

Rose Quartz

Although she dislikes Steven for himself, ever since she is learned he is the bearer of Rose Quartz's gem, and therefore an extension of her, she is taken an approach similar to Jasper's in fully believing that Steven is, in fact, Rose in disguise, revealing her deep hatred for the rebellion leader. While at first, it seems that Eyeball simply wants closure if she were to meet Rose, it is later revealed that the reasoning is so that Eyeball can poof her and achieve the status of a hero. Her feelings towards Rose are similar to many Homeworld gems, hating Rose for her rebellion and not understanding why she had protect the Earth. However, much like Jasper Eyeball carries a more personal grudge since witnessing Rose shattering Pink Diamond, unaware that the two are the same person.

Crystal Gems

Eyeball, like the rest of the Homeworld Gems, expresses hatred for the Crystal Gems. Although she befriended the Crystal Gem Ruby during the baseball game, thinking she was a Homeworld Gem, she was shown to later despise her when Ruby and Sapphire fuse and expose their identities as Gems. She also enjoyed keeping the Gems prisoner on the ship. In "Bubbled", she shows a strong dislike for both Steven and Rose Quartz and wants to poof Rose for allegedly shattering Pink Diamond.

Yellow Diamond

In the current times, she serves under Yellow Diamond's name and respects her rules to the fullest. It is hinted she has met Yellow Diamond in person, as she mentions filing a report personally in "Back to the Moon". Since she was alive before the division of the Diamonds, it is unknown if she always belonged to Yellow Diamond.

Pink Diamond

Eyeball was present during Pink Diamond's death and carries an overall good knowledge over her life, including her base and duties, but is unaware that her death was faked. She seems devoted to Pink Diamond as well as Yellow Diamond, expressing sadness over her supposed death, referring to it as a tragedy, and treating her with the respect suited for a leader.

Gemology

Ruby real

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.
    • Ruby is the national gemstone for Burma and Thailand
  • 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.

Gemstone

Image Description
Ruby Gemstone
Ruby's gemstone is located on her left eye, 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.
ve Homeworld Gems
Agates

HollyBlueAgateNavBox PolyhedroidAgateNavBox

Amethysts

Amethyst(shouldergem)NavBox Amethyst(leggem)NavBox Amethyst(foreheadgem)NaxBox Amethyst(backgem)NavBox Amethyst(navalgem)2NavBox

Amethyst(eyegem)NavBox Amethyst(canonshouldergem)NavBox Amethyst(backrighthandgem)NavBox Amethyst(cheekgem)NavBox Amethyst(navelgem)NavBox

Inactive

Amethyst cracked Navbox

Bismuths

Bismuth(triangulargem)NavBox Bismuth(armgem)NavBox

Carnelians

CarnelianSUNavBox Carnelian(lefthandgem)NavBox RedDiamondsCarnelianNavBox CarnelianOldNavBox

Citrines

Citrine(chestgem)NavBox Citrine(leggem)NavBox Citrine(eyegem)NavBox

Diamonds

BlueDiamondNavBox LuxenroarWDNav OD Yellow Diamond NavBox Red Diamond Gem

Inactive

PinkLogo VioletDiamondNavBox

Euclases

Euclase (back) Navbox Euclase (head) Navbox Euclase (waist) Navbox

Heliodors

Heliodor (eyeball) Navbox Heliodor (navel) Navbox Heliodor (nose) Navbox

Ices

Ice(navelgem)NavBox Ice(doc)NavBox Ice(eyeball)NavBox Ice(homeworldnavelgem)NavBox Ice(homeworldarmgem)NavBox Ice(backhandgem)NavBox Ice(homeworldforeheadgem)NavBox

Ice(homeworldbackgem)NavBox Ice(homeworldnosegem)NavBox Ice(homeworldhipgem)NavBox Ice(unknowngem)NavBox WD's Ice navbox Ice (high class) NavBox

Jaspers

Jasper (back gem) Gem Jasper (hand gem) Gem Jasper (Gemcrust nose gem) Gem Jasper (overcooked) Gem SkinnyJasperNavBox BumblebeeJasperNavbox

Inactive

Jasper Gem

Lapis Lazulis

Lapis Lazuli (chest gem) Gem LapisLazuli(chestgem)NavBox

Onyxes

Onyx(navelgem)NavBox Onyx(shouldergem)NavBox

Pearls

BluePearlNavBox YellowPearlNavBox Wp Red Pearl Gem PinkPearlNavBox AmethystsPearlNavBox IcesPearlNavBox

EisenkieselsPearlNavBox Zincites Pearl Gem Olivines Pearl Gem BoleitesPearlNavBox Pearl (overcooked) Gem

Pearl(back gem)NavBox Pearl(foreheadgem)NavBox Pearl(nosegem)NavBox Pearl(backhead)NavBox Pearl (High Class Ice) NavBox

Peridots

Peridot (nose gem) Gem Era 1 Peri Navbox

Pyropes

Pyrope (navel gem) navbox Pyrope (backhandgem) NavBox Pyrope (chestgem) NavBox Pyrope(righteyegem)NavBox

Rose Quartzes

Rose Quartz (thigh gem) Gem Rose Quartz (chest gem) navbox

Inactive

RoseQuartz(overcooked)NavBox RoseQuartz(shoudergem)NavBox RoseQuartz(backhandgem)NavBox
RoseQuartz(righthandgem)NavBox RoseQuartz(foreheadgem)NavBox RoseQuartz(homeworldrighthandgem)NavBox

Rubies

Army Gem Ruby (back hand gem) Gem Doc Gem Eyeball Gem Leggy Gem Navy Gem Ruby (right shoulder gem) Ruby(rubysona)NavBox Ruby(handgem)NavBox Ruby(backgem)NavBox Ruby(RedDiamond)NavBox Ruby(Homeworldforeheadgem)NavBox

Sapphires

PinkSapphireNavBox PinkSapphire(unknowngem)NavBox PinkSapphire(cheekgem)NavBox Yellow Sapphire Gem Green Sapphire Gem

Sapphire(handgem)NavBox Sapphire(navelgem)NavBox Sapphire(sapphiresona)NavBox Sapphire (eye gem) Gem Sapphire(sternumgem)NavBox Sapphire(armgem)NavBox

Purple Sapphire Gems PurpleSapphire(chestgem)NavBox PurpleSapphire(palmgem)NavBox BlackSapphireNavBox WhiteSapphireNavBox

Other Quartzes

EisenkieselNavBox BlueQuartzNavBox LemonQuartzNavBox Ice Quartz Navbox

Other Gems

Mali Navbox PadmaragaNavBox MarshallsussmaniteNavBox

ZinciteNavBox OlivineNavBox BoleiteNavBox CovelliteNavBox Demantoid Gem

SilverNavBox GoldNavBox Rock navbox NephriteNavBox Zirkelite Navbox

Non-GemCrust Gemsonas

BlackPearlNavBox Topaznav ScoleciteNavBox Snowquartznav Crystal Quartz Gem MahoganyNavBox

ve Rubies

RubyNavBox Army Gem Ruby (back hand gem) Gem Doc Gem Eyeball Gem Ruby(foreheadgem)NavBox Leggy Gem Navy Gem Ruby (right shoulder gem) Ruby(rubysona)NavBox Ruby (undercooked) Gem Ruby(handgem)NavBox Ruby(backgem)NavBox Ruby(RedDiamond)NavBox Ruby(Homeworldforeheadgem)NavBox Ruby(CrystalGemforeheadgem)NavBox

ve Gems
Agates

Holly Blue navbox CG HBA Navbox PolyhedroidAgateNavBox Red Banded Agate NavBox

Amethysts

AmethystNavBox Amethyst(shouldergem)NavBox Amethyst(leggem)NavBox Amethyst(foreheadgem)NaxBox Amethyst(backgem)NavBox Amethyst(navalgem)2NavBox

Amethyst(crackednavalgem)NavBox Amethyst(eyegem)NavBox Amethyst(canonshouldergem)NavBox Amethyst(backrighthandgem)NavBox Amethyst(cheekgem)NavBox Amethyst(navelgem)NavBox Defective Navel Amethyst navbox

Aquamarines

Aquamarine Navbox Aquamarine (forehead gem) Navbox

Bismuths

Bismuth(triangulargem)NavBox Bismuth(armgem)NavBox BismuthNavBox

Carnelians

CarnelianSUNavBox Carnelian(lefthandgem)NavBox RedDiamondsCarnelianNavBox CarnelianOldNavBox

Cat's Eye Opals

Ceo Gem CEO (chest) Navbox CEO (eye) Navbox CEO (head) Navbox

Citrines

Citrine(chestgem)NavBox Citrine(leggem)NavBox Citrine(eyegem)NavBox

Diamonds

Red Diamond Gem BlueDiamondNavBox User WD Navbox Yellow Diamond NavBox

Inactive

PinkLogo VioletDiamondNavBox

Euclases

EuclaseNavBox Euclase (back) Navbox Euclase (head) Navbox Euclase (waist) Navbox Euclase CG Navbox

Heliodors

HeliodorNavBox Heliodor (eyeball) Navbox Heliodor (navel) Navbox Heliodor (nose) Navbox

Ices

IceNavbox Ice(navelgem)NavBox Ice(doc)NavBox Ice(eyeball)NavBox Ice(homeworldnavelgem)NavBox Ice(homeworldarmgem)NavBox Ice(backhandgem)NavBox

Ice(homeworldforeheadgem)NavBox Ice(homeworldbackgem)NavBox Ice(homeworldnosegem)NavBox Ice(homeworldhipgem)NavBox Ice(unknowngem)NavBox Ice (right palm) navbox WD's Ice navbox

Inactive

Ice(nosegem)NavBox Ice(backgem)NavBox Iceball navbox Ice(rightbackhandgem)NavBox Ice(hipgem)NavBox Ice(foreheadgem)NavBox Ice(leggem)navbox

Jaspers

Jasper (back gem) Gem Jasper (hand gem) Gem Jasper (Gemcrust nose gem) Gem Jasper (overcooked) Gem SkinnyJasperNavBox BumblebeeJasperNavbox

Inactive

Jasper Gem

Lapis Lazulis

LapisLazuliNavBox Lapis Lazuli (chest gem) Gem Giant Lapis Lazuli Gemstone LapisLazuli(chestgem)NavBox CG Lapis navbox

Onyxes

Onyx(navelgem)NavBox Onyx(shouldergem)NavBox

Pearls

PearlNavBox BluePearlNavBox YellowPearlNavBox Red Pearl Gem PinkPearlNavBox AmethystsPearlNavBox IcesPearlNavBox

EisenkieselsPearlNavBox Zincites Pearl Gem Olivines Pearl Gem BoleitesPearlNavBox Pearl (overcooked) Gem Pearl(defective)NavBox Pearl(back gem)NavBox

Pearl(foreheadgem)NavBox Pearl(nosegem)NavBox Pearl(backhead)NavBox

Peridots

Peridot Gem Peridot (chest gem) Gem Peridot (nose gem) Gem Era 1 Peri Navbox Peridot (chest) navbox Peridot (forehead gem) Navbox

Pyropes

Pyrope (navel gem) navbox Pyrope (backhandgem) NavBox Pyrope (chestgem) NavBox Pyrope(righteyegem)NavBox

Pyrope Navbox

Rose Quartzes

Rose Quartz (thigh gem) Gem Rose Quartz (chest gem) navbox Steven Gem

Inactive

RoseQuartzNavBox RoseQuartz(overcooked)NavBox RoseQuartz(shoudergem)NavBox RoseQuartz(backhandgem)NavBox RoseQuartz(righthandgem)NavBox

RoseQuartz(foreheadgem)NavBox RoseQuartz(homeworldrighthandgem)NavBox

Rubies

RubyNavBox Army Gem Ruby (back hand gem) Gem Doc Gem Eyeball Gem

Leggy Gem Navy Gem Ruby (right shoulder gem) Ruby(rubysona)NavBox Ruby (undercooked) Gem

Ruby(handgem)NavBox Ruby(backgem)NavBox Ruby(RedDiamond)NavBox Ruby(Homeworldforeheadgem)NavBox Ruby(CrystalGemforeheadgem)NavBox

Sapphires

SapphireNavBox PinkSapphireNavBox PinkSapphire(unknowngem)NavBox PinkSapphire(cheekgem)NavBox OrangeSapphireNavBox Yellow Sapphire Gem

Yellow Sapphire (head gem) NavBox Green Sapphire Gem Sapphire(handgem)NavBox Sapphire(navelgem)NavBox Sapphire(sapphiresona)NavBox Sapphire (eye gem) Gem

Sapphire(sternumgem)NavBox Sapphire(armgem)NavBox Purple Sapphire Gems PurpleSapphire(chestgem)NavBox PurpleSapphire(palmgem)NavBox BlackSapphireNavBox

WhiteSapphireNavBox Padparadsha Sapphire (head gem) Navbox Sapphire (Off Color) navbox

Zircons

Zircon (Defense) NavBox Zircon (Prosecuting) NavBox Red Zircon (navel gem) Navbox Red Zircon (chest gem) Navbox

Other Quartzes

AuraSpiritQuartzNavBox EisenkieselNavBox BlueQuartzNavBox LemonQuartzNavBox Ice Quartz Navbox Prase Navbox

Other Gems

Mali Navbox PadmaragaNavBox MarshallsussmaniteNavBox ZinciteNavBox OlivineNavBox BoleiteNavBox

CovelliteNavBox Demantoid Gem SilverNavBox GoldNavBox Rock navbox

NephriteNavBox Tourmaline Navbox Obsidian Navbox Moonstone Navbox Electrum Nav

RutNav Zirkelite Navbox Blue Topaz Navbox

Non-GemCrust Gemsonas

Topaznav ScoleciteNavBox Snowquartznav Moonstonenav Crystal Quartz Gem RhodochrositeNavBox

MahoganyNavBox BlackPearlNavBox Lapis Lazuli (navel) NavBox Ruby(foreheadgem)NavBox Black Diamond Navbox