Ruri no Houseki

While shopping, high school student Ruri Tanigawa is captivated by a crystal necklace. Due to its high price, she can only dream of owning one—until her mother tells her about a mountainous area where Ruri's grandfather used to discover numerous minerals. As she makes her way to the location in the hope of finding materials to make her own accessories, Ruri meets Nagi Arato, a graduate student, who gladly shows her the way.

Soon, Ruri is left smitten when they arrive at an enormous quartz formation. More motivated than ever, she convinces Nagi to teach her more about mineralogy. With each new discovery and Nagi's lessons deepening her love, Ruri learns that there is more to minerals than just their price.

[Written by MAL Rewrite]

Arato, Nagi Main

Seto, Asami Japanese

Tanigawa, Ruri Main

Nemoto, Miyari Japanese

Imari, Youko Main

Miyamoto, Yume Japanese

Seto, Shouko Main

Hayashi, Saki Japanese

Kasamaru, Aoi Supporting

Yamada, Misuzu Japanese

Ruri's Mother Supporting

Toyoguchi, Megumi Japanese

Nursery Teacher Supporting

Natsume, Hina Japanese

Seto's Mother Supporting

Takeda, Hana Japanese

Iwagumo, Maika Supporting

Terasawa, Momoka Japanese

Seto's Father Supporting

Kawada, Shinji Japanese

Oowada, Tomoyuki Producer

Nishimae, Ayaka Producer

Nagamine, Rieko Producer

Miura, Fumito Producer

Reviews

Dec 22, 2025

MoKurosaki

Recommended

Ruri Rocks is an educational slice-of-life anime made by Studio Bind, the studio that is also responsible for the Mushoku Tensei series. It is a very well thought out series, as it manages to make rocks, gems, and geography, subjects that appear boring on the surface, stand out in a very engaging manner.

Positives:
Characters: Each of the characters in this series stands out in their own way. It's quite impressive to see Ruri go from being money-minded about expensive gems to actually involving herself in the process of petrology. Nagi is a great contrast from Ruri, with her laid-back personality and knowledge compared to Ruri's hyperactive ... and energetic personality. Imari and Shouko also offer a lot of fun and knowledge to the series and are a nice contrast from Nagi's personality. It's also quite wholesome to see that each of the seniors has a good influence on their juniors (Nagi on Ruri and Imari on Shouko, respectively).

Education: The mangaka has done a fantastic job implementing so much knowledge about each rock and gem, ranging from their compositions to their locations and even about techniques for finding and identifying them.

Visuals: Artwork and animation throughout look stunning, from the landscapes where the gems are found to the gems themselves, and it makes a lot of moments in the anime fun and memorable.

Overall, this is a very underrated series that transforms a seemingly boring topic into a very interesting one. For those who are into educational-themed anime and geeky topics, this series is for you.

Reviewer’s Rating: 8

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Nov 28, 2025

Upholder

Mixed Feelings

It's difficult to come up with a fair assessment of Ruri Rocks. It's a show about rocks and geology, so I suppose it deserves credit for not being as boring as it could have been. That said, it's still kind of boring.

There isn't really any reason to recommend against watching the show, save for the fact that there also isn't really any reason to recommend watching it either. It's a slice of life show, so you can expect low stakes and slow pacing, but even taking that into account there's a significant absence of anything even resembling conflict or a plot arc. They go looking ... for rocks, sometimes they find what they're looking for, sometimes they find other rocks, rinse and repeat for 13 episodes.

The characters are fun and likeable, the production is solid, it's not bad by any stretch, but unless you're really into rocks and geology I don't think you would regret skipping this one.

Reviewer’s Rating: 6

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Oct 10, 2025

NTruths

Not Recommended

Funny

The good: This is an anime about geology and collecting rocks, woot! We haven't had one of those before and it's a fun topic to learn about. The bits of actual science all seem accurate and worth learning.

The okay: The art and animation, and sound design are all fine for your average seasonal anime. I do wish they hadn't gone with the "ecchi" style of character design - it's fine in actual ecchi anime, but here it just felt pointlessly distracting.

The bad: The writing, the characters and plot were all two dimensional. Unfortunately, this show lacks any real depth or conflict. ... The characters all get along in every situation, the problems they encounter are quickly resolved without any real thought or effort, and the over-arcing story is extremely basic. Essentially, this is a story in which the characters never face any real chance of "failure" and thus their "success" feels worthless and maybe even unearned.

Overall, this is a 4/10 show - boring and lazy writing created a show not worth watching, out of a reasonably good and interesting topic.

Reviewer’s Rating: 4

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	Poll: Ruri no Houseki Episode 13 Discussion ( 1 2 3 ) Stark700 - Sep 28, 2025	104 replies	by Joshhhp »» Yesterday, 10:22 AM
	Poll: Ruri no Houseki Episode 7 Discussion ( 1 2 ) Stark700 - Aug 17, 2025	84 replies	by oNephalem »» Jan 6, 7:46 PM
	Poll: Ruri no Houseki Episode 12 Discussion ( 1 2 ) Stark700 - Sep 21, 2025	54 replies	by FofWeeb »» Dec 30, 2025 12:49 PM
	Poll: Ruri no Houseki Episode 1 Discussion ( 1 2 3 4 ) Stark700 - Jul 6, 2025	154 replies	by NotRexButCaesar »» Dec 24, 2025 2:20 AM
	Poll: Ruri no Houseki Episode 3 Discussion ( 1 2 ) Stark700 - Jul 20, 2025	80 replies	by SHALITAMARX15 »» Dec 2, 2025 11:02 AM