RocksdayUS State Rocks, Minerals & Gemstones
Official state rocks, stones, minerals, gems and fossils, each checked against the state's statute or official list. 48 of 50 states are verified so far; the rest are added as their laws are checked.
- Alabama ALHematite · Marble · Star blue quartz
- Alaska AKGold · Jade
- Arizona AZTurquoise · Wulfenite · Copper
- Arkansas ARQuartz crystal · Bauxite · Diamond
- California CANative gold · Serpentine · Benitoite
- Colorado COYule marble · Rhodochrosite · Aquamarine
- Connecticut CTGarnet
- Delaware DESillimanite
- Florida FLMoonstone · Agatized coral
- Georgia GA · being verified
- Hawaii HIBlack coral
- Idaho IDStar garnet · Idaho cut
- Illinois ILDolostone · Fluorite
- Indiana INSalem limestone
- Iowa IAGeode
- Kansas KSGreenhorn limestone · Galena · Jelinite
- Kentucky KYCoal · Calcite · Kentucky agate
- Louisiana LAAgate · Cabochon-cut gemstone from the Eastern oyster (Crassostrea virginica)
- Maine METourmaline · Granitic pegmatite
- Maryland MDChromite · Patuxent River stone
- Massachusetts MARoxbury puddingstone (Roxbury conglomerate) · Granite · Plymouth Rock · Dighton Rock · Rolling Rock, Fall River · Babingtonite · Rhodonite
- Michigan MIPetoskey stone · Chlorastrolite
- Minnesota MNLake Superior agate
- Mississippi MSPetrified wood · Mississippi opal
- Missouri MOMozarkite · Galena
- Montana MTSapphire · Montana agate
- Nebraska NEPrairie agate · Blue chalcedony (blue agate)
- Nevada NVSandstone · Virgin Valley black fire opal · Nevada turquoise · Silver
- New Hampshire NHGranite · Beryl · Smoky quartz
- New Jersey NJFranklinite
- New Mexico NMTurquoise
- New York NYGarnet
- North Carolina NCGranite · Gold (Aurum) · Emerald
- North Dakota NDKnife River flint
- Ohio OHOhio flint
- Oklahoma OKBarite rose (rose rock) · Hourglass selenite crystal
- Oregon ORThunderegg · Sunstone · Oregonite · Josephinite
- Pennsylvania PA · being verified
- Rhode Island RICumberlandite · Bowenite
- South Carolina SCBlue granite · Amethyst
- South Dakota SDRose quartz · Fairburn agate
- Tennessee TNLimestone · Agate · Tennessee River pearl
- Texas TXTexas Blue Topaz · Petrified Palmwood · Lone Star Cut · Silver
- Utah UTCoal · Honeycomb calcite · Copper · Topaz
- Vermont VTMarble · Granite · Slate · Talc · Grossular garnet
- Virginia VANelsonite
- Washington WAPetrified wood
- West Virginia WVBituminous coal · Mississippian fossil coral (Lithostrotionella)
- Wisconsin WIRed granite · Galena (lead sulfide)
- Wyoming WYJade
Compiled from primary sources cited on each state page. Third-party lists are not used as citations.