Ruri Rocks


Ruri Rocks, also known as Introduction to Mineralogy, is a Japanese manga series written and illustrated by. The story features high school student Ruri, a girl who loves minerals and jewelry who meets graduate student Nagi, fostering an interest in mineralogy. It has been serialized in Enterbrain's manga magazine Harta since August 2019, with its chapters collected into seven volumes as of September 2025. An anime television series adaptation produced by Studio Bind aired from July to September 2025.

Plot

Ruri Tanigawa is a high school student who likes jewelry and accessories. When visiting a jewelry store, she found accessories that used crystals. Ruri was amazed by the beauty of the crystal, and tried to find it herself. One day, while searching for crystals, Ruri meets Nagi Arato, a beautiful college graduate student studying mineralogy. Their encounter deepens Ruri's love and fascination with the world of mineralogy, as they are joined by Nagi's colleague Yōko Imari, and Ruri's classmate and best friend, Shōko Seto.
The characters look for minerals such as quartz, garnet, pyrite, gold and fluorite, and use various mineralogy tools such as a panning dish, a hammer and topographic maps.

Characters

;Ruri Tanigawa
;Nagi Arato
;Yōko Imari
;Shōko Seto
;Aoi Kasamaru

Media

Manga

Written and illustrated by, Ruri Rocks began serialization in Enterbrain's Harta magazine on August 10, 2019. The first volume was released on October 15, 2020. As of September 2025, seven volumes have been released.

Anime

An anime television series adaptation was announced on September 11, 2024. It is produced by Studio Bind and directed by Shingo Fujii, with series composition handled by Michiko Yokote, characters designed by Mayu Fujii, and music composed by and. The series aired from July 6 to September 28, 2025, on AT-X and other networks. The opening theme song is "Hikari no Sumika", performed by Rei Yasuda, while the ending theme song is "Sapphire", performed by. Crunchyroll is streaming the series. Plus Media Networks Asia has licensed the series in Southeast Asia and broadcasts it on Aniplus Asia.