Houseki no Kuni (TV) characters: ages, heights & birthdays

Youngest

300+

Phosphophyllite

Oldest

3597+

Yellow Diamond

Every character at a glance

Character	Age	Height	Birthday	Japanese voice
Phosphophyllite	300+	–	–	Tomoyo Kurosawa
Shinsha	–	–	–	Mikako Komatsu
Diamond	–	–	–	Ai Kayano
Antarcticite	–	–	–	Mariya Ise
Padparadscha	–	–	–	Romi Park
Bort	–	–	–	Ayane Sakura
Kongou	–	–	–	Jouji Nakata
Rutile	–	–	–	Yumi Uchiyama
Yellow Diamond	3597+	–	–	Junko Minagawa
Alexandrite	–	–	–	Rie Kugimiya
Euclase	2173+	–	–	Mamiko Noto
Jade	–	–	–	Ayahi Takagaki
Amethyst 84	–	–	–	Kanae Itou
Ventricosus	–	–	–	Chiwa Saitou
Obsidian	–	–	–	Ryou Hirohashi
Red Beryl	–	–	–	Maaya Uchida
Aculeatus	–	–	–	Yuuko Sanpei
Benitoite	–	–	–	Ari Ozawa
Zircon	–	–	–	Himika Akaneya
Morganite	–	–	–	Mutsumi Tamura
Goshenite	–	–	–	Saori Hayami
Watermelon Tourmaline	–	–	–	Sayaka Harada
Amethyst 33	–	–	–	Kanae Itou
Neptunite	–	–	–	Atsumi Tanezaki
Sphene	–	–	–	Hitomi Nabatame
Hemimorphite	–	–	–	Reina Ueda
Shiro	–	–	–	–

Ages and heights as listed on AniList; where a character grows up during the story, height is the latest one listed. Updated 2026-10-31.