Great Diamond Authority

Evil Organization
Full Name	The Great Diamond Authority
Alias	Order of the Diamonds The Diamonds
Origin	Steven Universe
Foundation	Unknown
Headquarters	Gem Homeworld
Commanders	White Diamond (leader) Yellow Diamond Blue Diamond Pink Diamond (formerly)
Agents	Current Jasper (corrupted/inactive) Yellow Pearl Blue Pearl White Pearl Ruby-1F4 Cut-4ND "Eyeball" Ruby "Doc" Ruby "Navy" Ruby "Army" Ruby "Leggy" Holly Blue Agate Hessonite Peridot "Squaridot" (inactive) Aquamarine Topaz Blue [Defense] Zircon (inactive) Yellow [Prosecuting] Zircon (inactive) Emerald Nephrite-XJ Cut-763 Other Rose Quartzes (inactive) Former Peridot Lapis Lazuli Centipeetle Mother/Nephrite (corrupted) All Crystal Gems All Gem Monsters (corrupted) All Off-Colors
Powers / Skills	Advanced Gem Abilities Absolute power and control over the Gem Homeworld and all Gem colonies. Endless access to advanced technology and Gem armies.
Goals	Exterminate organic life (failed). Make sure the Cluster fully incubates and destroy the planet Earth (failed). Maintain absolute power and control over Homeworld and all gem colonies (failed).
Crimes	Enslavement Planetary genocide (attempted)
Type of Villains	Genocidal Tyrants

“	Every Gem is made for a purpose: To serve the order of the Diamonds. Those who cannot fit inside this order must be purged! To come out misshapen, to reshape yourself outside your purpose, and to defend this ruined, worthless planet is a disgrace!	„
	~ Jasper

“	The Diamonds, unique in their flawlessness, sought to expand their perfection across the galaxy.	„
	~ Garnet, describing the Great Diamond Authority.

The Great Diamond Authority is the matriarchal body of Gem leaders led by White Diamond, who rule in absolute power over the Gem Homeworld and its remaining colonies. They are the main antagonists of the Cartoon Network series Steven Universe.

History

Backstory

Prior to the events of Steven Universe, there were four diamonds on the group (Yellow, Pink, Blue, and White). Later, the Diamonds began the colonization of several planets they encountered, with Earth being part of the colonization, in which Pink Diamond was in charge of completing (successfully) the colonization on the planet. However, one of her underlings, Rose Quartz, shattered her and began a revolution against the Diamonds, thus founding the Crystal Gems. Time passed and a war on earth started in which the Diamonds left Earth to its fate by the Cluster and, to make sure Rose and the Crystal Gems pay, they unleashed a corruption light across the planet which Rose and the remaining Crystal Gems (Garnet, Pearl and Amethyst) survived thanks to her shield.

Unfortunately for them, the remaining of their troops didn't get to escape and were corrupted along with the remaining Crystal Gems. Despite this, the Diamonds were aware the Cluster would eventually destroy Earth, getting rid of the Crystal Gems' base forever.

Season 1

The Diamonds' presence was completely unknown during the events of Season 1, but they are mentioned by Jasper in "Jailbreak", when she says "Yellow Diamond needs to see this...thing". Their emblem is also shown in the Gem Warship without Pink Diamond on it.

Season 2

In Season 2, the Diamonds' presence is limited with Jasper being stuck underwater with Lapis as the unstable fusion known as Malachite. Peridot is a recurring antagonist of the season and she is seen monitoring abandoned gem sites and attempting to contact Yellow Diamond and try to get off of Earth. Peridot is eventually captured by the Crystal Gems, and ends up teaming up with them to stop a gigantic, monstrous Gem Monster called "The Cluster", which the Diamonds had sent her to check on. Peridot eventually makes contact with Yellow Diamond, however, she ended up defecting from her and became a member of the Crystal Gems.

Season 3

In Season 3, more information is found out about the Diamonds. In "Hit the Diamond", a group of five ruby soldiers from Homeworld are challenged to a game of baseball and they end up revealing that their real mission is to locate Jasper and go off to Neptune after Steven lied to them about her whereabouts. After being unfused from Lapis, Jasper begins assembling an army of corrupted gems to fight back against the Crystal Gems and has them all caged in the Beta Kindergarten. After Steven, Peridot, and Amethyst find her, Jasper reveals that all gems are made to serve the the Order of the Diamonds (Great Diamond Authority) and that all gems who don't must be purged. She eventually fuses with a corrupted gem but it only lasts for a short period of time and she ends up being corrupted afterwards but not before she states that Rose had done something to Earth and Pink Diamond, her former superior and is then turned into a corrupted gem. Eventually, the five rubies return, Amethyst shape-shifts into Jasper, and they go to the moon base where it's revealed that Rose Quartz had actually shattered Pink Diamond. In "Bubbled", Steven and Eyeball are stuck in space and Eyeball reveals her intentions to kill Steven, who she thinks is Rose, to avenge Pink Diamond and return back to Homeworld as a hero but it fails and she's thrown back into space.

Season 4

In Season 4, Blue Diamond came to Earth in Korea, which is where Pink Diamond was shattered. There, Blue was mourning over how she wished she could have done something to help out Pink. She then realizes that she wasn't alone: her Pearl brought before her, Greg Universe, who asks Blue Diamond if she was close with Pink Diamond, in which Blue Diamond replies, "Very". Greg also mentions that there is also someone he was very close with (Rose Quartz) and he misses her very much. Blue Diamond is surprised that humans could even be able to miss people they care about. She decides to take Greg with her, for she believes that The Cluster is still going to emerge, and so she intends to "save" Greg from it, as well as to save a piece of Pink Diamond's legacy. So, Blue Diamond grabs Greg and enters her ship and leaves to Pink Diamond's human zoo.

By the time the Crystal gems arrived to the zoo, Blue Diamond had already left the zoo.

Season 5

In Season 5, Yellow and Blue came to the trial for Rose Quartz's case from the demise of Pink Diamond. They felt surprised that Steven's mother Rose Quartz was Pink Diamond.

Gallery

White Diamond

Yellow Diamond

Blue Diamond

Pink Diamond

White Diamond's Mural by BlackMoon121.png

White Diamond's Mural

Yellow Diamond's Mural

Blue Diamond's Mural

Pink Diamond's Mural

The original Diamond mural designs as posted on Joe Johnston's blog. Note that it appears each Diamond's mural features symbols for the planets, and their moons, that each Diamond manages.

Diamond Communicator

"Every Gem is made for a purpose – to serve the order of the Diamonds."

Trivia

• Their current symbol resembles the Triforce from The Legend of Zelda.
• The confirmed instrument of the Diamonds is a synthetic sound combining harmonette and strings, processed by a synth, this can also be heard in "Same Old World" and "Monster Reunion" when the Corrupting Light flashes. It was revealed in the "Steven Universe: Art & Origins" book that each Diamond also has a unique chord.
• All of the Diamonds have diamond-shaped pupils rather than circular ones.
  • They're also tall in size, towering most Gems and even Gem fusions, with the slight exception of Pink Diamond, who is shorter than the other Diamonds.