black coraL
Hawaii does not have an Official State Stone or Mineral.
Black Coral is the state gemstone. The Nene or Hawaiian Goose is the State bird. The Humpback whale is the State marine mammal. The Kukui nut tree is the State tree.
Arizona's state gemstone is Turquoise.
The state gemstone of Pennsylvania is the red variety of the mineral corundum, known as ruby. It was designated as the state gemstone in 1993 to recognize the significant deposits of this gemstone found in the state.
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.
Agatized Coral and the State Gemstone is the Moonstone.
Flint. The state legislature adopted flint as the state gemstone in 1965 because the gem is plentiful in the state.
I dont think theres an official gemstone for the US but there is a Official gemstone for each state.