Blue Diamond

Blue Diamond is a homeworld Gem who is a member of the Diamond Authority and one of the former main antagonists in the Steven Universe Story Arc.

## Appearance

As one of the rulers of Homeworld, Blue Diamond has a massive size, with her towering height making her own Pearl appear tiny in comparison.

However, her somewhat hunched posture, combined with her long, sweeping cloak, gives her a relatively smaller and more despondent silhouette than if she were standing straight.

Her complexion is azure, and she has long, straight, alice blue hair which curls inward at the ends.

Two noticeable and symmetrical locks of her hair curl and point inwards towards her face just below her cheekbones.

A unique feature of her hair are two lengths of that lead from each side of her head and physically connect on her chest just below her gem, giving it an almost shawl-like appearance.

She has a long ovoid face, a full upper lip, and a straight nose.

She also possesses large, sad, downward-slanting eyes with bold mascara on the lower lashes, giving the appearance of a weeping woman – most likely due to her depression over the supposed shattering of Pink Diamond.

Her irises are light blue with black diamond-shaped pupils and she has thin arching eyebrows.

Her gemstone is located on her chest above her sternum, and she wears a long navy blue cloak that touches the ground.

Underneath the upper part of her cloak, she wears a navy blue hood.

Her height is similar to Yellow Diamond, only obscured by her hunched posture making her look shorter.

## Personality

Blue Diamond's debut portrays her as a very mellow Diamond who treats high-ranking members of her court with respect.

According to Holly Blue Agate, Blue Diamond has a reputation for mercy and forgiveness.

"Saving" Greg from the threat of the Cluster after taking a liking to him, unaware that the Cluster is no longer active, demonstrates this.

Another example of Blue being merciful is when she restrained herself from attacking Rose Quartz (Steven) and gives him a chance to speak.

However, as with Yellow Diamond, her true nature may be at odds with her reputation, as she sentences Ruby to be shattered for accidentally fusing with Sapphire while trying to do her job and saving her.

Blue Diamond's temperament appears to have changed significantly in the 5,000 years following the supposed shattering of Pink Diamond.

She fell into a state of depression upon believing Pink Diamond was shattered.

She is unable to let go of the past, becoming fixated on preserving Pink Diamond's legacy.

Her efforts to maintain the late diamond's zoo, save Earth specimens from the Cluster's emergence, and her refusal to shatter the Rose Quartzes that once served under Pink Diamond shows this behaviour.

She continues to regard the Earth as Pink Diamond's colony, and, due to being unaware that the Cluster is bubbled, is visibly saddened by the fact that the planet will eventually be destroyed.

Additionally, Blue Diamond seems to not understand humans, given by how she was surprised that Greg was able to comprehend and sympathize with her pain of losing a loved one, in addition to displaying an apparent unawareness of masculine pronouns, though this is understandable since she is not native to Earth and has had very little reason to get to know humans.

Blue Diamond, as shown in the episode "The Trial", is extremely diplomatic.

Against Yellow Diamond's wishes, she allowed Steven to continue making his case during his trial, though she did lose her temper when his recounting of events differed.

She nonetheless seemed to want to hear Blue Zircon's theory on how and why Pink Diamond was shattered.

When Yellow Diamond snaps and poofs both Zircons present at the trial, Blue Diamond confronts her and scolds her for not having enough restraint to hear the case out.

This shows that Blue Diamond may be as merciful and forgiving as her gems claim – at the very least, she certainly has a greater respect for due process and an interest in the truth.

In "Reunited", despite her unreasoning aggression towards the Crystal Gems, Steven later heard Blue's thoughts, that despite seeking to do them harm it only made the pain she felt worsen and her longing to see Pink grow.

After learning of Rose Quartz and Pink Diamond being the same person, she has shown concern over Steven along with Yellow Diamond.

She has also shown extreme affection for Steven/Pink as seen through the effect her powers have on those around her, as along with extreme sentimentalism causing Yellow to have to reign her in.

Additionally, Blue is shown to have a humorous side to her, poking fun at Steven's name in "Familiar" and making remarks that amuse Yellow and White Diamond in "Change Your Mind".

Despite her more merciful, compassionate, and forgiving nature, she is shown to be extremely unforgiving and derogatory towards fusions of different gems, something that she shares in common with Yellow Diamond.

In "Together Alone", she demanded Steven and Connie un-fuse, and doesn't stop Yellow Diamond from locking Stevonnie in a prison tower.

However, after Steven challenges her beliefs when she comes back to check on him, she breaks down and realized that she had been making Pink Diamond suffer all those times she locked her up and made her cry.

She remorsefully admits that it was right of Pink to leave Homeworld since she hadn't been treating her right.

With this resolve, she decides to help Steven and Connie escape, even going as far as accepting Steven as himself and briefly fighting Yellow Diamond to help him and his friends make it safely back to Earth.

## Powers, Skills & Abilities

Being a Diamond, Blue Diamond is one of the most powerful Gems in the entire Gem Empire, who demonstrated the ability to take on the Crystal Gems by herself. It can be assumed that she possesses standard Gem abilities, but since she is a Diamond, the abilities are expected to be much greater than usual. In "Reunited", she is noted to have astounding mental strength.

* Enhanced Strength: Due to her large size, Blue Diamond is able to lift up a human, such as Greg, with relative ease. She was also able to break Rose's sword with just the snap of her fingers and throw the barn off of her in a fit of rage. However, this might just be a simple matter of physics due to how large she is.

* Immense Durability: Blue Diamond seems to have extreme durability, as after the Crystal Gems literally threw themselves at her, and she was hit by Pearl, Amethyst, Garnet, Bismuth, Lion's sonic roar, and Steven's spiked bubble, she fell onto her knees, but quickly recovered, and seemingly suffered minimal damage from being crushed first under a barn and then her own warship. In addition, she is able to resist Yellow Diamond's electrokinesis for several seconds, while other Gems would have poofed immediately upon being hit by it. This is likely due to her sharing the same invulnerable nature as her gem, much as how Peridot's gem type gives her extreme durability.

* Aura Projection: The Diamonds can project an aura around them that they can control; they can either radiate it from their entire bodies or emit it from specific parts of their bodies (i.e., their hands). Blue's aura is blue and has water-like properties. Though intangible, Blue was able to break Lapis' water chains from her hands upon coating her hands with her aura. She can use this as an offensive ability in both the physical and mental plane, as seen when she was able to focus her aura and attack Steven as he was astral projecting.

* Crying Inducement: Blue Diamond can engulf a large area with her aura, causing any Gem or Half-Gem within its reach to be overwhelmed with intense feelings of sadness and cry uncontrollably, even affecting Yellow Diamond to a limited degree. Blue Diamond seems to activate this ability involuntary whenever she is shedding tears in an emotional state (e.g. joy or nostalgia), albeit to a lesser degree since she doesn't radiate her blue aura during these instances. When she weaponized her grief over Pink Diamond's supposed death, she instantly rendered the Crystal Gems unable to fight, also splitting all but the most stable Gem fusions that got caught in her aura apart, as Alexandrite came undone as soon as she was affected, while Garnet remained whole. The level of resistance to the ability varies, specifically regarding non-Gems: after being engulfed by Blue's aura, Connie did kneel in tears with the rest of the Gems, despite her not being affected by it the first time (she's also immune to it in the following episode); Lion was apparently impervious to its effects, but whether this was due to his revival by Rose Quartz is unknown; Lapis Lazuli, having undergone extreme emotional trauma, was seen resisting the aura's effect and barely shed a tear upon being affected.

* Corruption Induction: Though the attack was meant to obliterate the Crystal Gems on Earth after Pink's supposed shattering, Blue, Yellow, and White Diamond's collective powers instead corrupted the remaining Gems on Earth.

* Corruption Reversal: Along with Pink/Steven, White, and Yellow Diamond, Blue Diamond has the ability to reverse the effects of the Corrupting Light on Gems. However, it is implied that this is only temporary without the power of all four Diamonds. The four reversed the corruption on the water of Rose's Fountain in "Change Your Mind".

* Psychic Resistance: Blue Diamond's aura shields her from telepathic abilities through the sheer intensity of her thoughts, even without her own awareness. This includes Steven's (and to extension Pink Diamond's) astral projection, as seen when she briefly repelled Steven, though this resistance doesn't extend to White Diamond's mind control.

* Psychic Blast: While on the mental plane, Blue Diamond can fire her aura as a beam which induces profound distress on the target; however, despite combining her assault with Yellow Diamond's, it was repelled by Steven's own aura.

* Psychic Detection: Blue Diamond is also able to locate others on the mental plane when they aren't in physical contact with her, such as Steven.

* Energy Projection: Blue Diamond is shown to have some form of energy projection power that she uses for battle. The energy can be molded into different projectiles, from spheres to a hail of lasers, or combinations thereof. Once Blue Diamond broke free of Lapis water chains, she was able to create a ball of stellar light and it was able to shoot out blasts and explosions. She was able to form large spheres of energy dense enough to physically push back Yellow Diamond and summon one powerful enough to cause Yellow Diamond to cry in pain after being struck with it.