Idaho's official nickname is the "Gem State".
No US state has the ruby as their official state gem.
The state gem of Colorado is the Aquamarine
Massachusetts has no state gem.
It has no official state gem.
California's state gem is benetoite.
Colorado's state gem is the aquamarine.
Washington, D.C. is not a state and therefore does not have a state gem.
Oklahoma does not have an Official State Gem.
Florida's State gem is the moonstone
Idaho is known as the "Gem State"
Idaho's state gem is the star garnet.