Kalmar “Gem State” laƙabi ce ga jihar Idaho, wacce ke yankin arewa maso yammacin Amurka. Sunan laƙabin ya samo asali ne daga gaskiyar cewa Idaho ya shahara da tarin duwatsu masu daraja, irin su star garnets, topaz, da opals, waɗanda ake samu a sassa daban-daban na jihar. Ana amfani da kalmar “gem” sau da yawa don yin nuni ga wani abu da ake ganin yana da inganci na musamman ko kyakkyawa, don haka sunan laƙabin kuma yana nuna kyawun yanayi da albarkatun Idaho.