First, you need a gem at the core of your being. Then you need a body that can turn into light. Then you need a partner who you trust with that light.
|—Garnet, "We Need to Talk"|
Fusion Gems are the product of two or more Gems or half Gems, who can fuse with both Gems and humans. Fusions are formed when the participants are emotionally harmonious with each other. This state can be spontaneous but it is usually achieved deliberately through a synchronized "Gem dance".
When Gems fuse, their bodies and minds become one. This creates an entirely different entity, as opposed to two minds sharing a single body. Some dominant features in Gems can occur in their fusions, such as Pearl's nose shape. Malachite, Garnet, and Alexandrite, showed that one component Gem can take control of the fusion. It is also possible for different Gems to take control of different parts of the fusion, as proven by Lapis Lazuli's control of Malachite's hydrokinesis while Jasper was in control of the body. For Malachite and Alexandrite, the Gem in control's voice was layered over the fusion's voice to show control. However, for Garnet, this was not done; it was only the fusion's voice, although it is unknown whether this is intentional. As seen with Sugilite and Malachite, certain fusions will cause the loss of individuality between their constituent Gems if fused for long periods of time. While all fusions require consent, a fusion of hatred is inherently unstable. Fusions retain all standard Gem abilities, such as fusing, shapeshifting, bubbling and even more.
Memories made before and during a fusion can be held over, as Opal, Sapphire, and Sardonyx recognized Steven despite him never meeting them personally. However, Gems who fuse together do not automatically share their memories with each other. For example, the second time that Garnet and Pearl fused into Sardonyx in "Cry for Help", she did not know that Pearl had secretly repaired the tower. When Steven and Amethyst formed Smoky Quartz, their name is pulled from Amethyst's memory. However, the implication that the name had been used when Amethyst fused with Rose Quartz does not mean that the two fusions are the same. Garnet and Pearl's reaction to seeing Smoky Quartz suggest they have not met them before.
In order to fuse, Gems must be in perfect sync mentally, physically and emotionally. Fusions are formed when Gems perform a synchronized dance. Each fusion's dance is different. If successful, Gems transform into an amorphous mass of energy before fully transforming. During the process of fusion, the gemstones of the participating Gems are visible. However, Sardonyx was the first fusion Gem not to show Gemstones during fusion. If unsuccessful, Gems will be ejected before finishing the entire transformation. An example of a stable fusion (and de-fusion) was shown in "We Need to Talk", when Rose and Pearl fused into Rainbow Quartz. Garnet gives Greg a more literal explanation that Gems turn into light and have to be trusting of the other Gem(s) with their light. During Fusion, each gemstone from the fusing Gems are visible and seen shifting into place while the mass forms into a body. However, in "Cry for Help", when Pearl connected with Garnet, both Gems and gemstones disappeared before the mass of energy appears. Even when Sardonyx is fusing, the gemstones are not visible until Sardonyx fully fuses.
Fusions are capable of further fusing with Gems, as exhibited in "Coach Steven" (in which Garnet fuses with Amethyst). Fusion order does not matter for multi-Gem fusions. The same Gems will produce the same fusion regardless of which order they combine in. For example, if Opal fused with Garnet, or if Pearl fused with Sugilite, or if Amethyst fused with Sardonyx, each resulting fusion would still result in the formation of Alexandrite.
Each fusion embodies a relationship between the participants. While some fusions like Garnet embody romantic relationships, fusion is not inherently romantic, and other fusions can embody other sorts of relationships such as the social relationships between friends, allies or even enemies.
De-fusion is a process in which a fusion splits into its component Gems. During the de-fusion process, fusion Gems will reverse the fusion process. The fusion will turn back into a mass of light before splitting back into its original participating fusees. During the de-fusion, the Gemstones of the participating Gems are visible at all times. However, in "Cry for Help", Sardonyx was the first fusion not to have gemstones during de-fusion.
A stable de-fusion occurs when the participating fusees have a mutual agreement on de-fusing. This is shown in "We Need to Talk" when Pearl and Rose Quartz de-fuse from Rainbow Quartz, they smoothly shift out of each other. Another example of a stable de-fusion is in "Cry for Help" when Sardonyx de-fuses into a flash of light, leaving Garnet and Pearl holding each other. As well as that, in Hit the Diamond, while The Crystal Gems are figuring a plan out to send away the Rubies, Garnet says: "I have a plan, or should I say, WE have a plan." After that Ruby and Sapphire slowly fuse out of each other, holding hands.
An unstable de-fusion occurs when the fusees have a very high conflict of opinion or one or all are experiencing an overwhelming emotion. This is shown by the fusees being thrown out of the fusion. The first example of this is shown in the episode "Giant Woman" when Pearl and Amethyst argue over the Heaven Beetle, causing the fusion to become un-synchronized and forcing them to de-fuse. This is also shown when Alexandrite argues over a bit of shrimp, causing de-synchronization and de-fusion. Similar incidents nearly occurred with Malachite as she was being pulled to the bottom of the sea and Garnet when she was facing a Cluster Gem.
Another unstable de-fusion through conflict was shown in "Keystone Motel". When Garnet's component Gems are arguing over Pearl's betrayal of their trust, Ruby ends the fusion by speaking through Garnet, saying "Then you can just go." This ends the fusion and ejects the fused Gems.
In "Mindful Education", Garnet explains that if at least one of the fusees is emotionally unstable during the fusion, it can cause the fusion to become "unbalanced" and lose touch with reality, hallucinate, and ultimately defuse. This was demonstrated when Stevonnie began hallucinating during a training session with Pearl, and it explained previous instances of Stevonnie hallucinating in "Alone Together" and "Beach City Drift". During Stevonnie's training, Connie is reminded of an event she is upset about, resulting in Stevonnie defusing. This occurs again in the episode, this time as a result of Steven's feelings to similar memories he has. He is able to re-fuse with Connie after she offers him perspective and understanding about the incidents.
A damaged de-fusion occurs when the fusion takes on severe physical damage, as shown in "Coach Steven". When Sugilite is injured by her flail, she "poofs", back to Garnet and Amethyst. During a damaged de-fusion, the original Gems do not retreat into their gemstones to regenerate, however the damage caused to the fusion will be carried on to the component gems as Garnet and Amethyst were unable to move and had "a monster head-ache" unless they are dealt in contact with a great amount of physical damage, or a Gem Destabilizer, the fusing gems will retreat into their gemstones to compensate for the damage to the fusion.
An example of this is when Jasper stabs Garnet with a Gem Destabilizer, causing Garnet's body to fall apart. She poofs back into her original Gems, Ruby and Sapphire. However, unlike Sugilite, the damage caused to Garnet's body also caused severe damage to both Ruby and Sapphire, forcing them into their gemstones to regenerate. It is unknown how the Gem Destabilizer is capable of doing this, or how it is engineered.
The new forms have extra body parts, and the combined heights and strengths of the fusers.
|—Garnet, Fusion (short)|
Fusion Gems combine the designs of both/all Gems unless they are the same type of Gem, in which case they will just be a bigger version of their Gem design, as shown in "The Answer". Gemstones appear in the same locations and are the same cut of the Gems are composed of, but the type of Gem changes, and so does the color. The exception would be Stevonnie, whose single Gem remained as Steven's. Should two Gems with gemstones in the same location fuse, the gemstones would either be side by side or up and down on the resulting fusion. Each Gem involved in the fusion often contributes an additional pair of arms, showing that multiple pairs of arms are a common trait among fusions. Another common trait among fusions is having more than two eyes. Many fusions so far have had as many eyes as all of their constituent Gems put together. Opal, Stevonnie, some of the Cluster Gems, Sardonyx, Smoky Quartz, and the Ruby fusions have had fewer. Alexandrite's eyes have yet to be seen, since they were covered by a visor during her appearance. Fusions also base their appearance on what they think would 'Look cool' suggesting both fusing gems have a choice on which attributes they can contribute, disproving that the Fusion's form does not represent their stability.This is seen in how stable fusions such as Garnet or Rainbow Quartz are almost completely humanoid, slightly less stable ones like Opal or Sardonyx are less so and unstable fusions like Malachite and Sugilite appear monstrous.
Types of Fusions
♫ Can't you see that my relationship is stable? ♫
|—Garnet, Jail Break|
A fusion is marked stable when the fusing gems remain a strong synchronization, while also keeping a strong bond between each other. Some fusions are stable due to how close in connection the Gems fusing are, such as Garnet, due to the fact that Ruby and Sapphire are so romantically involved.
Garnet, think about this. You and Amethyst can be a little... uh... unstable when your personalities combine.
|—Pearl, "Coach Steven"|
Some fusions can be unstable due to the way their participants' personalities combine. In "Coach Steven", Garnet and Amethyst lose themselves in the Sugilite fusion, going on a rampage and refusing to split up. Because of their desire to stay fused, Sugilite began to lose her rationality.
We're Malachite now...
|—Lapis Lazuli, "Chille Tid"|
While most unstable fusions fail upon fusing or during the fusion, Malachite is the only example of an unstable fusion remaining fused. This is due to the pure will-power of Lapis Lazuli, as we see in "Chille Tid" she is holding the fusion together with all her strength, while fighting Jasper to keep the fusion together. However, it is revealed in "Super Watermelon Island" that both gems began to identify as Malachite, beginning a violent rampage.
They were forced together! They were forced to fuse! This is wrong!
|—Garnet, "Keeping it Together"|
Through being buried underground and fusing due to extensive pressure, it is possible to force Gemstones or Gem Shards into fusing. This method of fusion is usually incomplete and often against their will, simply binding fragmented Gemstones together on the edges instead of changing their colors, as shown in complete fusion. The Cluster Gems are a result of an artificial fusion, and in "Keeping it Together", it was shown that Gem Shards could be forced to fuse. The physical bodies of these Gems usually embody the incomplete fusions, with limbs being stuck together at seemingly random places. More examples of artificial fusion were later shown in "Nightmare Hospital" and "Gem Drill".
Gems in this category are so shattered they are utterly unaware of themselves nor at what is happening around them; only seeking out other Gems and finding their missing pieces.
Uncorrupted Gems can fuse with Corrupted Gems without the consent of the corrupted Gem, and it appears to involve forcing the corrupted Gem to move in some way while they are in physical contact. However, the corrupted gem can escape the fusion if it fights back hard enough. The process of fusing damages the uncorrupted Gem's gemstone, eventually fully corrupting it. This was first shown in "Earthlings" when Jasper fused with one of the Corrupted Gems - she became corrupted as well.
It's never like that! Whenever I've fused, it's always just been me, but bigger, I... I've never had a third eye before.
|—Ruby, "The Answer"|
Whereas different Gems fusing creates a new Gem with a new personality, homogem (same gem) fusions simply create a larger version of the Gems that are fusing. Because of the lack of individuality of mind and physical construct, there are no new personalities. Because all the fusing Gems are naturally synchronized, each Gem feels as themselves but they are actually all together as one.
If two Gems are of the same type but are not identical, they would still form a larger version of themselves in build, but with a combined color palette and outfit.
Due to the natural synchronization resulting from their similar personalities, Gems of the same gemstone do not need to form a complex dance as shown in "The Answer" where the three Rubies quickly fused after simply forming a pyramid, whereas two different Gems usually must perform a fusion dance to synchronize and fuse.
The hostile Malachite fusion has an internal fusion realm where Lapis Lazuli and Jasper struggle for control. It is not known whether this is a general property of fusions, an unusual property of Jasper and Lapis Lazuli's hostile fusion, or Steven's perspective on Malachite as viewed in his dream.
Another instance of a similar concept is when Garnet seems to converse separately as Ruby and Sapphire before or after starting to de-fuse in "Keeping it Together" and "Keystone Motel", giving light to their opposing opinions.
In "Mindful Education", Garnet and Stevonnie, using a meditative technique, are able to enter the same fusion realm. The two fusions witness their fusees confront their negative feelings.
- Fusions are frequently pictured, especially as statues, throughout the abandoned Gem monuments in the show, (e.g. The Lunar Sea Spire).
- The Crystal Temple has the appearance of a typical fusion. The gemstone placements suggest that the temple is a fusion of Rose, Amethyst, Garnet (Ruby and Sapphire), and Pearl.
- In "Jail Break", Jasper describes fusion as a "cheap tactic to make weak Gems stronger", while Garnet states that she fuses out of love.
- Pearl implies fusion is rather intimate in "Coach Steven" and "Alone Together"; she tries to cover Steven's eyes while Garnet and Amethyst perform their dance, and says Stevonnie might be considered "inappropriate". In "We Need to Talk", Pearl says fusion is the ultimate form of bond between Gems. Garnet has also stated in "Keeping it Together" that fusion is considered sacred and to her, it is a choice.
- On the Gem Homeworld, fusions are primarily used only in battles and as weapons. Being fused outside of a fight is seen as disgraceful, as Peridot is constantly uncomfortable around Garnet, calling her a perma-fusion and a filthy war machine.
- The Homeworld stigma surrounding fusion when not used for a specific purpose (such as fighting) could be because in a sense it is changing the fusee's form to something outside of their 'purpose', which according to Jasper is defiance to the Diamonds.
- According to "Guide to the Crystal Gems", when Ruby and Sapphire first fused with each other, it was unusual for Gems of different types to fuse with each other. This is because Gems only fused with other Gems of the same type (rubies with other rubies and so on).
- Fusion between Gems of different types was also seen as "disgusting" and reprehensible by Homeworld Gems in "The Answer".
The abilities of Gem fusions vary based on the two Gems who fuse. Whenever a Gem fuses to make a weapon, they combine their own original weapons to create a new one composed of those two or more weapons. If a Gem possesses significant other abilities, such as Sapphire's future vision, that may also be incorporated into the fusion's abilities.
Fusions may wield the weapons of the Gems that compose them, but can combine them into a singular weapon. These weapons typically harness the abilities of the weapons that were fused, an example being Opal's weapon, a recurved bow. Pearl's spear not only makes up the recurved bow, but the arrows are visually similar to the energy blast the spear can emit, and the spear itself. Meanwhile, Amethyst's whip acts as the bowstring. Sugilite's flail uses Garnet's gauntlets as a mace head and Amethyst's whip as a rope. Sardonyx's war hammer is composed of Pearl's spear as the handle and Garnet's gauntlets as the head. Smoky Quartz's weapon combines Steven's shield and Amethyst's whip, forming a yo-yo.
Fusions (by Gem number)
- Rainbow Quartz
- Smoky Quartz (Hybrid/Gem fusion)
- Corrupted Jasper Fusion
- Fusions tend to highly exaggerate whatever personality traits are shared amongst the majority of the Gems comprising the Fusion. Sugilite seems to inherit her impulsive and irrational behavior from Ruby and Amethyst, while Sardonyx seems to get her haughty and self-absorbed personality from Sapphire and Pearl.
- When Gems in a given Fusion have incompatible personalities or have conflicting motives for fusing, and for whatever reason do not (or can not) terminate the Fusion, it results in an unstable fusion. When this happens, the constituent Gems risk losing touch with their individual personalities the longer the fusion persists.
- In "Coach Steven", Sugilite is the first example of Gems remaining as an unstable Fusion for too long.
- Malachite is another example. At the end of "Jail Break", Jasper is clearly trying to escape the fusion. Either Jasper has very low willpower (not unlikely, considering her barbaric personality), or Lapis Lazuli has a great deal of mental fortitude or a combination of both.
- Excluding same-gem fusions, only 12 fusions are currently known: Garnet, Opal, Sugilite, Alexandrite, Stevonnie, Malachite, The Cluster, Cluster Gems as a whole, Rainbow Quartz, Sardonyx, Smoky Quartz, and The Corrupted Jasper Fusion.
- Fusions with more participants appear to be larger and more powerful. Garnet, a two Gem fusion, is only seven feet tall, while Alexandrite easily towers over all other known fusions. However, the more Gems are involved in the fusion, the more probable it is for them to lose their individual personalities.
- It appears that the more hostile the fusion, the larger and more monstrous it becomes. Malachite, an unstable two Gem fusion, was formed and held together by anger and mistrusts and easily towers over the stable Garnet, who reaches up to a fraction of her forearm. Sugilite, a three Gem fusion, was easily large enough and powerful enough to destroy the rebuilt Communication Hub with a single punch.
- Fusions with more than two gems, that are not same-gem fusions, seem to be harder to maintain overall. For example, Garnet can remain active for an indefinite amount of time, but Alexandrite requires a large degree of effort to remain stable.
- The statue forming the Crystal Temple appears to be a fusion of the Crystal Gems and Rose Quartz since it shows their respective gemstones.
- Left palm/Ruby
- Right palm/Sapphire
- Navel/Rose Quartz
- It is the fusion depicted with the most arms, though some are missing due to the temple's age or the damage done to it (the Centipeetle Mother in "Gem Glow" destroys a hand with its acid spray). However, in all episodes except for the Pilot, which is non-canon, Rose Quartz's gem has not been shown due to its location being either the entrance to the Beach House or the Crystal Temple itself.
- The "Fusion Dance" displayed by Gems, is very similar to the Fusion Dance shown in the anime, Dragon Ball Z. However, the Gems actually dance to fuse, rather than complete a set of poses like the Fusion Dance in Dragon Ball Z, in order to become one.
- It is unknown whether or not Malachite, Alexandrite, Rainbow Quartz, or Cluster Gems have unique fusion weapons.
- According to Garnet in the "Fusion" short, Fusion Gems have extra body parts. This is true for all Fusion Gems that are composed of different and non-hybrid Gems; Garnet has an extra eye, Opal has two extra arms, Rainbow Quartz has two extra eyes, Sardonyx has two extra arms and two extra eyes, Malachite has no actual feet but has two pairs of arms that act as them, Sugilite has two extra arms and three extra eyes, Alexandrite has four extra arms, and an extra mouth, as well as likely having extra eyes under her visor, and Smoky Quartz has one extra arm. The Ruby Fusion and Stevonnie do not have extra body parts.
- Steven is capable of fusing with humans as shown in "Alone Together", although only Steven can do this as he is half-human.
- The majority of fusions shown are voiced by musicians, Garnet by Estelle, Opal by Aimee Mann, Sugilite by Nicki Minaj, Stevonnie by AJ Michalka, and Sardonyx by Alexia Khadime.
- It is unknown if Rainbow Quartz is voiced by a musician or not as she has currently not been heard talking yet.
- Fusions tend to combine the complexions of the Gems that form them. However, there are exceptions; for example, Alexandrite is redder than Garnet or Amethyst, Rainbow Quartz is darker and more purple than Rose Quartz or Pearl, Smoky Quartz is darker and more brown than Steven and Amethyst, and Sardonyx is redder than Garnet.
- Fusions with more Gems tend to be larger. Sugilite and Alexandrite are larger than any known two-Gem fusions.
- Malachite seems to be an exception. This may be due to the size of Jasper, the hostility between Jasper and Lapis and the stability of their fusion overall.
- More stable fusions like Garnet and Stevonnie tend to be more compact and humanoid, while more volatile fusions like Sugilite, Alexandrite and Malachite tend to be larger and more monstrous.
- According to the Guide to the Crystal Gems, fusion of two different Gems was seen as rare until Ruby and Sapphire formed Garnet.
- According to the Guide to the Crystal Gems, if Gems of the same gemstone fuse, they will simply create the same Gem. Only Gems of different gemstones can fuse into a different Gem.
- This was shown for the first time in "The Answer."
- According to Rebecca Sugar, the reason why the Gems fuse can determine the height of their fusion. Since Amethyst and Pearl fused to save Steven, their fusion was small, perhaps slightly taller than Garnet, while Malachite's reason for fusion was to destroy the Crystal Gems, which would make her slightly shorter than Sugilite.
- It is implied in "The Answer" that Ruby and Sapphire are the first known Gems of different gemstones to fuse.
- Fusions can shape-shift, as demonstrated by Garnet in "Together Breakfast" and "Keep Beach City Weird".
- In "Alone at Sea", it is shown that despite the unstable nature of her fusion with Jasper, Lapis missed being fused with her, however she is eventually able to realize that her relationship with Jasper was unhealthy and rejected Jasper's attempts to convince her to fuse back into Malachite. Thus their fusion can be seen as an allusion to abusive and/or dysfunctional relationships.
- Smoky Quartz is the second fusion to have Quartz in the name, with the first being Rainbow Quartz.
- Amethyst provided the name for both of Steven's fusions, Stevonnie and Smoky Quartz.
- When Gems turn their bodies into light during a fusion dance, the light is solid mass, as shown in "Back to the Moon", when Amethyst was lying on Sardonyx's shoulder while she was still forming.
- During NYCC 2016, Kat Morris was asked about how characters are sometimes able to fuse without dancing. She replied that it "more than the dance, it's about a mutual understanding."