イエローダイヤモンド
from Land of the Lustrous
Origin
Earth
Yellow Diamond, often called simply Yellow, is one of the Gems who mainly participates in patrol duty. They are everyone's elder(3597 years). They are one of the fastest, if not the fastest gem.(The eldest and fastest) They're always portrayed as cheerful yet mature, and acts like the Gems' older sibling. They are shown to have low self esteem and possible self loathing for constantly letting their partners be taken by the Moon People, and also questions why they bother fighting anymore. They feel personally responsible for all of their siblings.
Land of the Lustrous
In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.
