High school girl Ruri Tanigawa, obsessed with jewelry and gemstones, discovers her life in flux when she meets mineralogy graduate student Nagi Arato. Through shared expeditions and laboratory work, Nagi introduces Ruri to the hidden beauty of minerals and crystal collecting. As their friendship deepens, Ruri’s passion blossoms into a heartfelt journey of scientific curiosity and personal growth. The atmospheric slice-of-life series combines educational elements with warm visuals and charming character dynamics. Produced by Studio Bind, directed by Shingo Fujii, with scripting by Michiko Yokote, the anime debuted on July 6, 2025, and features theme songs by Rei Yasuda (opening) and Hana Hope (ending).