Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.

In the chart below, a year which is listed within parentheses represents the year during which that mineral, rock, stone or gemstone was officially adopted as a state symbol or emblem.

Table of minerals, rocks, stones and gemstones

State, federal district, territory	Mineral	Rock or stone	Gemstone
Alabama[1]
Alaska[2][3]
Arizona[4][5][6][7]
Arkansas[8][9][10]
California[A][11][12]
Colorado[B][13]
Connecticut[14]
Delaware[15][16]
Florida[C][17]
Georgia[18]
Hawaiʻi[19][20]
Idaho[21]
Illinois[22]
Indiana[24]
Iowa[25][26]
Kansas[27][28][29]
Kentucky[31]
Louisiana[32][33]
Maine[34][35][36]		Granitic pegmatite (2023)
Maryland[37]
Massachusetts[D][38]
Michigan[39]
Minnesota[40]
Mississippi[41][42]			Opal (2023)
Missouri[43]
Montana[44]			and
Nebraska[45]
Nevada[46][47]
New Hampshire[48]
New Jersey[49]	Franklinite[50]
New Mexico[51]
New York[52]
North Carolina[53]
North Dakota[54]
Ohio[55]
Oklahoma[56][57][58]
Oregon[E][59][60]	State Twin Minerals: and
Pennsylvania[61]
Rhode Island[62]
South Carolina[63]
South Dakota[64][65]			and State Jewelry: Black Hills Gold
Tennessee[66]		and formerly
Texas[67]
Utah[68]
Vermont[69][70][71]		and and
Virginia[72][73]
Washington[74]
West Virginia[F][75]
Wisconsin[77]
Wyoming[78]