If you learn about minerals, the usual scenery will start to look like a different world! Ruri, a high school girl obsessed with mineral collecting. Following the sparkle of crystals, she ventures to――rivers, dams, and even abandoned mines! If you observe with interest, you’ll start to see the grand drama behind the shine of the stones! Researching, thinking, searching, and walking, she finally makes her discoveries. A genuine science adventure depicting the joy of knowledge, Volume 3. Her classmate Seto, who aspires to be a researcher, also joins in, making Ruri’s surroundings even livelier! ☆What will they search for in Volume 3……?☆ ・Sapphire ・Rhyolite ・Fluorite ・Zincite ・Silver glass ・Opal―――and many more colorful varieties!