The chalcedony stone, commonly known as prairie agate, is hereby declared the state rock of Nebraska.
Neb. Rev. Stat. § 90-110
State rock; prairie agate
Laws 1967, c. 610, § 1, p. 2058; R.R.S.1943, § 84-727.
Official source: Nebraska Legislature. Reproduced from public-domain Nebraska statutes; confirm against the official source for the current text. Not legal advice.