RocksdayWyoming State Gem: Jade
Wyoming's state gemstone is jade, adopted in 1967. Wyoming's state fossil is Knightia, adopted in 1987. Wyoming's state dinosaur is Triceratops, adopted in 1994.
Symbol names and dates are taken from primary state sources linked below. Informal or proposed symbols are not listed unless adopted.
State gemstone: Jade
- Adopted:
- 1967
- Law:
- W.S. 8-3-109
- Variety:
- nephrite jade
It is a variety of nephrite. Nephrite is a mineral with a Mohs hardness of 6–6.5 and a greasy to waxy luster, usually green, white or black.
Often confused with: Jadeite, Serpentine, Serpentinite
State fossil: Knightia
- Adopted:
- 1987
- Law:
- W.S. 8-3-112
Knightia is a fossil with a Mohs hardness of about 2–3 and a dull luster, usually brown, gray or yellow.
Often confused with: Graptolite, Shale
State dinosaur: Triceratops
- Adopted:
- 1994
- Law:
- W.S. 8-3-116 (chosen by election)
Wyoming state symbols FAQ
What is the state gemstone of Wyoming?
Wyoming's state gemstone is jade, adopted in 1967 (W.S. 8-3-109).
What is the state fossil of Wyoming?
Wyoming's state fossil is Knightia, adopted in 1987 (W.S. 8-3-112).
What is the state dinosaur of Wyoming?
Wyoming's state dinosaur is Triceratops, adopted in 1994 (W.S. 8-3-116 (chosen by election)).
Sources
We cite primary sources (statutes, state government pages, federal regulations, and land-manager sites). Third-party listicles are not used as citations.
- Wyoming Statutes Title 8 (8-3-109 gemstone, 8-3-112 fossil, 8-3-116 dinosaur) — Wyoming Legislature (accessed 2026-10-24).
- Student Packet — Wyoming Secretary of State (accessed 2026-10-24).
Last verified 2026-10-24. Corrections welcome: if a statute has changed, tell us and we'll re-verify.
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