Houseki no Kuni
English title: Land of the Lustrous
Japanese title: 宝石の国
Alternative titles: Country of Jewels
Type: TV
Source: Manga
Episodes: 12
Status: Finished Airing
Aired: Oct 7, 2017 to Dec 23, 2017
Broadcast: Saturdays at 21:30 (JST)
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Orange
Producers: Mainichi Broadcasting System, Kodansha, Movic, AT-X, TOHO animation, Tokyo MX, Q-Tec, Kyoraku Industrial Holdings, BS11
Licensors: Sentai Filmworks
Genres: Action, Drama, Fantasy, Mystery
Themes: Anthropomorphic
Demographics: Seinen

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.

[Written by MAL Rewrite]