noun
rock collecting; mineral collecting (as a hobby)
Wasei-eigo term for the hobby of collecting rocks and mineral specimens. Not a direct translation of English 'stone hunting'.
wasei-eigo (Japanese-coined English), from stone hunting
週末は家族でストーンハンティングに出かける。
On weekends, we go rock collecting as a family.
彼はストーンハンティングが趣味で、珍しい鉱物をたくさん持っている。
His hobby is mineral collecting, and he has many rare specimens.