The gem stone "Ohio Flint," a crypto-crystalline variety of quartz, is hereby adopted as the official gem stone of the state.
Ohio Rev. Code Ann. § 5.07, under Chapter 5 | State Insignia; Seals; Holidays.
Ohio Rev. Code Ann. § 5.07
The gem stone "Ohio Flint," a crypto-crystalline variety of quartz, is hereby adopted as the official gem stone of the state.