Arizona's state gemstone is Turquoise.
Turquoise is the official state gemstone of Arizona.
Alaska's state gemstone is Jade.
The state gemstone is the garnet.I don't believe it has one.
The Freshwater Pearl is the official state gemstone of Kentucky.
The Oregon state gemstone is sunstone.
I dont think theres an official gemstone for the US but there is a Official gemstone for each state.
Flint. The state legislature adopted flint as the state gemstone in 1965 because the gem is plentiful in the state.
Agatized Coral and the State Gemstone is the Moonstone.
The official state gemstone of Alabama is the Star Blue Quartz, adopted in 1990.
North Carolina's state rock is granite, and state gemstone is emerald.
Iowa does not have a State Gemstone.