Seasons & episodes
S1 · E1My First Mineral Hunt 2025-07-06 · 24 min
High school girl Ruri meets graduate student Nagi while collecting minerals in the mountains.
S1 · E2The Value of Golden Color 2025-07-13 · 24 min
Ruri is determined to find gold, but Nagi explains that it might not be as likely as she hopes.
S1 · E3The Lost Planet 2025-07-20 · 24 min
Ruri meets Nagi's colleague Imari, and the three embark on a journey to find a lost mine.
S1 · E4Study of Sands 2025-07-27 · 24 min
In search of sapphire, Nagi teaches Ruri how to study sand, but Ruri prefers to hunt on a bigger scale.
S1 · E5Worlds Seen and Unseen 2025-08-03 · 24 min
Ruri, Nagi, and Imari head to the beach in search of agate, and Ruri learns about the long lifecycle of rocks.
S1 · E6A Closer Look into the Blue 2025-08-10 · 24 min
Just as the group begins searching for sapphire on foot, Ruri uncovers a grave mistake that halts their plans.
S1 · E7Seaside Recycling Studio 2025-08-17 · 24 min
Ruri finds sea glass on the beach and runs into her classmate Shoko, who has a secret passion for minerals.
S1 · E8The Golden Elegy 2025-08-24 · 24 min
Ruri teams up with Shoko for a science project, which takes a turn when they discover a strange, orange rock.
S1 · E9Time Capsule of 1.9 Million Tons 2025-08-31 · 24 min
Ruri and Nagi head out to hunt for opals but discover that the area has already been fully excavated.
S1 · E10Sentence to an Abandoned Railroad 2025-09-07 · 24 min
Imari leads a hunt for manganese ore, when the group encounters a mystery along abandoned railroad tracks.
S1 · E11The Sapphire Cradle 2025-09-14 · 24 min
When Ruri has trouble deciding on her future, she turns to her study of sapphire.
S1 · E12Memories Come with Rocks and Noise 2025-09-21 · 24 min
When Ruri discovers her grandpa's old crystal radio, she's determined to restore it.
S1 · E13Look Up, Examine, Search! And Next! 2025-09-28 · 24 min
Ruri, Shoko, Nagi, and Imari take a trip together, where they search for meteorite at a hot springs inn.