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Mineral collecting is a modern-day treasure hunt! Ruri, a high school girl who loves jewelry and accessories, ventures into the world of mineral collecting in mountains, rivers, and caves. The first volume features numerous minerals, including quartz, garnet, pyrite, gold sand, and fluorite. The collection scenes are full of fascinating scenes using specialized tools such as a panning dish, hammer, and topographical maps. This is an authentic science adventure based on the solid knowledge of the author, who is trained in mineralogy!
0026 - What Makes Stones Shine
0025 - The Extreme Inside a Beaker
0024 - Unearthed Memories
0023.5 - Bonus
0023.2 - Washing stones
0023.1 - So you really can collect stuff like this, huh
0023 - How to Put Away the World You Picked Up
0022 - The Convergence Point of Past and Future
0021 - Look Up, Peer In, Search, and Onward!
0020 - Water, Change, and Sedimentation
0019 - A Detour? A Side Path? A New Discovery!
0018.5 - Bonus
0018 - The Sapphire Cradle
0017 - Stained Glass Illuminating the Tunnel Road
0015.5 - Extra: Nagi-san's Grand Clean-Up
0015 - A 1.9-Million-Ton Time Capsule
0014 - Elegy in Dusk-Hued Amber
0013 - The Recycling Plant by the Shore
0012.5 - Bonus
0012 - The Blue Beckons
0011 - Engraved on Paper
0010 - Seen and Unseen Worlds
0009 - Beyond the Glow
0008 - Sifting Through the Sand
0007 - Mountains in the Palm
0006.5 - Bonus
0006 - Stars Left Behind
0005 - Nagi-San's Lab
0004 - The Riverbed Piggy Bank
0003 - Gold's Worth
0002 - The Stone Hideaway
0001 - First Mineral Collection