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Rock & Mineral Wiki

Identification guides, properties, and value estimates for 305 rocks, minerals, crystals, and gemstones — the same reference database that powers the StoneSnap app.

Minerals (103)

ActinoliteActinoliteMohs 5–6 · commonAegirineAegirineMohs 6–6.5 · commonAlabasterAlabasterMohs 1.5–2 · commonAlbiteAlbiteMohs 6–6.5 · commonAlmandineAlmandineMohs 7–7.5 · commonAmazoniteAmazoniteMohs 6 · uncommonAmetrineAmetrineMohs 7 · commonAnalcimeAnalcimeMohs 5–5.5 · commonAndalusiteAndalusiteMohs 6.5–7.5 · commonAndraditeAndraditeMohs 6.5–7 · commonAnhydriteAnhydriteMohs 3–3.5 · commonApatiteApatiteMohs 5 · commonApophylliteApophylliteMohs 4.5–5 · commonAragoniteAragoniteMohs 3.5–4 · commonArsenopyriteArsenopyriteMohs 5.5–6 · commonAstrophylliteAstrophylliteMohs 3–3.5 · commonAtacamiteAtacamiteMohs 3–3.5 · commonAugiteAugiteMohs 5.5–6 · commonAurichalciteAurichalciteMohs 1–2 · commonAventurineAventurineMohs 6.5–7 · commonAxiniteAxiniteMohs 6.5–7 · commonAzuriteAzuriteMohs 3.5 · uncommonBaryteBaryteMohs 3–3.5 · commonBauxiteBauxiteMohs 1–3 · commonBenitoiteBenitoiteMohs 6–6.5 · commonBerylBerylMohs 7.5–8 · commonBiotiteBiotiteMohs 2.5–3 · commonBismuthBismuthMohs 2–2.5 · commonBoraxBoraxMohs 2–2.5 · commonBorniteBorniteMohs 3–3.25 · commonCalciteCalciteMohs 3 · commonCassiteriteCassiteriteMohs 6–7 · commonCavansiteCavansiteMohs 3–4 · commonCelestineCelestineMohs 3–3.5 · commonCerussiteCerussiteMohs 3–3.5 · commonChabaziteChabaziteMohs 4–5 · commonChalcedonyChalcedonyMohs 6.5–7 · commonChalcociteChalcociteMohs 2.5–3 · commonChalcopyriteChalcopyriteMohs 3.5–4 · commonCharoiteCharoiteMohs 5–6 · commonChiastoliteChiastoliteMohs 6.5–7.5 · commonChloriteChloriteMohs 2–2.5 · commonChromiteChromiteMohs 5.5 · commonChrysoberylChrysoberylMohs 8.5 · commonChrysocollaChrysocollaMohs 2.5 · commonChrysopraseChrysopraseMohs 6.5–7 · commonCinnabarCinnabarMohs 2–2.5 · commonCobaltiteCobaltiteMohs 5.5 · commonColemaniteColemaniteMohs 4–4.5 · commonCopperCopperMohs 2.5–3 · commonCordieriteCordieriteMohs 7–7.5 · commonCorundumCorundumMohs 9 · commonCovelliteCovelliteMohs 1.5–2 · commonCrocoiteCrocoiteMohs 2.5–3 · commonCryoliteCryoliteMohs 2.5–3 · commonCupriteCupriteMohs 3.5–4 · commonDanburiteDanburiteMohs 7–7.5 · commonDatoliteDatoliteMohs 5–5.5 · commonDesert RoseDesert RoseMohs 2 · commonDiasporeDiasporeMohs 6.5–7 · commonDiopsideDiopsideMohs 5.5–6.5 · commonDioptaseDioptaseMohs 5 · commonDumortieriteDumortieriteMohs 7–8.5 · commonElbaiteElbaiteMohs 7–7.5 · commonEpidoteEpidoteMohs 6–7 · commonErythriteErythriteMohs 1.5–2.5 · commonEudialyteEudialyteMohs 5–5.5 · commonFluoriteFluoriteMohs 4 · commonForsteriteForsteriteMohs 6.5–7 · commonFrankliniteFrankliniteMohs 5.5–6.5 · commonGalenaGalenaMohs 2.5 · commonGibbsiteGibbsiteMohs 2.5–3.5 · commonGlauconiteGlauconiteMohs 2–3 · commonGoethiteGoethiteMohs 5–5.5 · commonGosheniteGosheniteMohs 7.5–8 · commonGraphiteGraphiteMohs 1–2 · commonGrossularGrossularMohs 6.5–7.5 · commonGypsumGypsumMohs 2 · commonHaliteHaliteMohs 2–2.5 · commonHauyneHauyneMohs 5.5–6 · commonHeliodorHeliodorMohs 5 · commonHematiteHematiteMohs 6 · commonHemimorphiteHemimorphiteMohs 4.5–5 · commonHessoniteHessoniteMohs 6.5–7 · commonHeulanditeHeulanditeMohs 3.5–4 · commonHornblendeHornblendeMohs 5–6 · commonHowliteHowliteMohs 3–3.5 · commonJadeJadeMohs 5 · commonKyaniteKyaniteMohs 5 · uncommonLabradoriteLabradoriteMohs 6 · commonLepidoliteLepidoliteMohs 2.5 · uncommonMagnetiteMagnetiteMohs 5.5–6.5 · commonMalachiteMalachiteMohs 4 · commonMuscoviteMuscoviteMohs 2–2.5 (on cleavage), up to 4 across · commonOlivineOlivineMohs 6.5–7 · commonOnyxOnyxMohs 6.5–7 · commonPyritePyriteMohs 6.5 · commonRhodoniteRhodoniteMohs 6 · uncommonSatin SparSatin SparMohs 2 · commonSeleniteSeleniteMohs 2 · commonSodaliteSodaliteMohs 5.5 · commonTalcTalcMohs 1 · commonTourmalineTourmalineMohs 7–7.5 · common

Igneous Rocks (32)

AndesiteAndesiteMohs 5–6 · commonAnorthositeAnorthositeMohs 6 · commonApliteApliteMohs 6 · commonBasaltBasaltMohs 6 · commonBasaltic AndesiteBasaltic AndesiteMohs 6 · commonDaciteDaciteMohs 6–7 · commonDiabaseDiabaseMohs 6 · commonDioriteDioriteMohs 6–7 · commonDuniteDuniteMohs 6.5–7 · commonGabbroGabbroMohs 5–6.5 · commonGraniteGraniteMohs 6.5 · commonGranodioriteGranodioriteMohs 6–7 · commonIgnimbriteIgnimbriteMohs 6 · commonKimberliteKimberliteMohs 5–6.5 · commonLarvikiteLarvikiteMohs 6 · commonMonzoniteMonzoniteMohs 6 · commonNoriteNoriteMohs 6 · commonObsidianObsidianMohs 5.5 · commonPegmatitePegmatiteMohs 6–7 · commonPeridotitePeridotiteMohs 5.5–7 · commonPhonolitePhonoliteMohs 6 · uncommonPorphyryPorphyryMohs 5–7 · commonPumicePumiceMohs 5–6 · commonRainbow ObsidianRainbow ObsidianMohs 5.5 · uncommonRhyoliteRhyoliteMohs 5.5–7 · commonScoriaScoriaMohs 5–6 · commonSnowflake ObsidianSnowflake ObsidianMohs 5.5 · commonSyeniteSyeniteMohs 5.5–6.5 · commonTephriteTephriteMohs 6 · uncommonTonaliteTonaliteMohs 6 · commonTrachyteTrachyteMohs 6 · commonTuffTuffMohs 2–5 · common

Silicate Minerals (29)

JadeiteJadeiteMohs 6.75 · rareKaoliniteKaoliniteMohs 2 · commonLazuriteLazuriteMohs 5.25 · rareLeuciteLeuciteMohs 5.75 · uncommonMicroclineMicroclineMohs 6 · commonMorganiteMorganiteMohs 7.75 · rareMoss AgateMoss AgateMohs 6.75 · commonNatroliteNatroliteMohs 5.5 · uncommonNephelineNephelineMohs 6 · uncommonOrthoclaseOrthoclaseMohs 6 · commonPhlogopitePhlogopiteMohs 2.75 · commonPrasiolitePrasioliteMohs 7 · uncommonPrehnitePrehniteMohs 6.25 · uncommonPyropePyropeMohs 7.25 · uncommonPyrophyllitePyrophylliteMohs 1.5 · commonScapoliteScapoliteMohs 6 · uncommonSchorlSchorlMohs 7 · commonSerpentineSerpentineMohs 3.5 · commonSillimaniteSillimaniteMohs 7 · uncommonSpessartineSpessartineMohs 7 · uncommonSpodumeneSpodumeneMohs 6.75 · uncommonStauroliteStauroliteMohs 7.25 · uncommonStilbiteStilbiteMohs 3.75 · commonSugiliteSugiliteMohs 6 · rareSunstoneSunstoneMohs 6.5 · uncommonTitaniteTitaniteMohs 5.5 · uncommonTremoliteTremoliteMohs 5.5 · commonVesuvianiteVesuvianiteMohs 6.5 · uncommonZoisiteZoisiteMohs 6.5 · uncommon

Sedimentary Rocks (28)

ArkoseArkoseMohs 6 · commonBanded Iron FormationBanded Iron FormationMohs 5–7 · commonBrecciaBrecciaMohs 3.5 · commonCalicheCalicheMohs 3 · commonChalkChalkMohs 1–2 · commonChertChertMohs 6.5–7 · commonClaystoneClaystoneMohs 2–3 · commonCoalCoalMohs 1–2.5 · commonConglomerateConglomerateMohs 3–7 · commonCoquinaCoquinaMohs 3–4 · commonDiatomiteDiatomiteMohs 1.5 · commonDolomiteDolomiteMohs 3.5–4 · commonDolostoneDolostoneMohs 3.5 · commonEvaporiteEvaporiteMohs 2.5 · commonFlintFlintMohs 6.5–7 · commonGraywackeGraywackeMohs 6 · commonIronstoneIronstoneMohs 4 · commonLateriteLateriteMohs 4 · commonLimestoneLimestoneMohs 3 · commonMarlMarlMohs 2.5 · commonMookaiteMookaiteMohs 6.5 · uncommonMudstoneMudstoneMohs 2–3 · commonOoliteOoliteMohs 3 · commonRock SaltRock SaltMohs 2.5 · commonSandstoneSandstoneMohs 6 · commonShaleShaleMohs 2–3 · commonSiltstoneSiltstoneMohs 3.5 · commonTravertineTravertineMohs 3–4 · common

Metamorphic Rocks (19)

AmphiboliteAmphiboliteMohs 5.5 · commonAnthraciteAnthraciteMohs 2.5 · commonBlueschistBlueschistMohs 5.5 · uncommonEclogiteEclogiteMohs 6–7.5 · commonGneissGneissMohs 6–7 · commonGreenschistGreenschistMohs 4.5 · commonHornfelsHornfelsMohs 6 · commonMarbleMarbleMohs 3.5 · commonMetaconglomerateMetaconglomerateMohs 6.5 · uncommonMigmatiteMigmatiteMohs 5–7 · commonMyloniteMyloniteMohs 5.5 · uncommonPhyllitePhylliteMohs 2.5–4 · commonQuartziteQuartziteMohs 7 · commonSchistSchistMohs 2.5–7 · commonSerpentiniteSerpentiniteMohs 2.5–4 · commonSkarnSkarnMohs 5.5 · uncommonSlateSlateMohs 3.5 · commonSoapstoneSoapstoneMohs 1–2.5 · commonUnakiteUnakiteMohs 6.5 · common

Quartz Family (16)

AgateAgateMohs 7 · commonAmethystAmethystMohs 7 · commonBloodstoneBloodstoneMohs 7 · commonBlue Lace AgateBlue Lace AgateMohs 7 · uncommonCarnelianCarnelianMohs 7 · commonCitrineCitrineMohs 7 · uncommonClear QuartzClear QuartzMohs 7 · commonDalmatian JasperDalmatian JasperMohs 7 · commonDendritic AgateDendritic AgateMohs 7 · commonFire AgateFire AgateMohs 7 · uncommonJasperJasperMohs 7 · commonMilky QuartzMilky QuartzMohs 7 · commonQuartzQuartzMohs 7 · commonRose QuartzRose QuartzMohs 7 · commonSmoky QuartzSmoky QuartzMohs 7 · commonTiger's EyeTiger's EyeMohs 7 · common

Metals & Alloys (16)

AluminumAluminumMohs 2.75 · commonBrassBrassMohs 3.5 · commonBronzeBronzeMohs 3 · commonChromeChromeMohs 8.5 · commonIronIronMohs 4 · commonLeadLeadMohs 1.5 · commonNickelNickelMohs 4 · commonPewterPewterMohs 2.5 · commonRose GoldRose GoldMohs 3 · commonStainless SteelStainless SteelMohs 5.5 · commonSterling SilverSterling SilverMohs 2.7 · commonTinTinMohs 1.5 · commonTitaniumTitaniumMohs 6 · commonTungstenTungstenMohs 7.5 · commonWhite GoldWhite GoldMohs 3 · commonZincZincMohs 2.5 · common

Semi-Precious Stones (13)

AquamarineAquamarineMohs 7.5 · uncommonGarnetGarnetMohs 7 · commonIoliteIoliteMohs 7 · uncommonKunziteKunziteMohs 7 · uncommonLapis LazuliLapis LazuliMohs 5.5 · uncommonMoonstoneMoonstoneMohs 6 · uncommonOpalOpalMohs 5.5 · uncommonPeridotPeridotMohs 6.5 · uncommonSpinelSpinelMohs 8 · uncommonTanzaniteTanzaniteMohs 6.5 · legendaryTopazTopazMohs 8 · uncommonTurquoiseTurquoiseMohs 6 · uncommonZirconZirconMohs 7.5 · uncommon

Materials (7)

Aura QuartzAura QuartzMohs 7 · commonBlue GoldstoneBlue GoldstoneMohs 5.5 · commonCherry QuartzCherry QuartzMohs 5.5 · commonGlassGlassMohs 5.5 · commonGoldstoneGoldstoneMohs 5.5 · commonOpaliteOpaliteMohs 5.5 · commonSlag GlassSlag GlassMohs 5.5 · common

Sulfide Minerals (6)

MarcasiteMarcasiteMohs 6 · commonMolybdeniteMolybdeniteMohs 1.25 · uncommonOrpimentOrpimentMohs 1.75 · uncommonRealgarRealgarMohs 1.75 · uncommonSphaleriteSphaleriteMohs 3.75 · commonStibniteStibniteMohs 2 · uncommon

Precious Stones (5)

AlexandriteAlexandriteMohs 8.5 · epicDiamondDiamondMohs 10 · legendaryEmeraldEmeraldMohs 7.5 · legendaryRubyRubyMohs 9 · rareSapphireSapphireMohs 9 · rare

Phosphate Minerals (5)

LazuliteLazuliteMohs 5.75 · rarePyromorphitePyromorphiteMohs 3.75 · uncommonVarisciteVarisciteMohs 4 · uncommonVivianiteVivianiteMohs 1.75 · uncommonWavelliteWavelliteMohs 3.75 · uncommon

Native Elements (4)

GoldGoldMohs 2.5 · legendaryPlatinumPlatinumMohs 4.25 · legendarySilverSilverMohs 2.75 · rareSulfurSulfurMohs 2 · common

Carbonates (4)

MagnesiteMagnesiteMohs 4 · commonRhodochrositeRhodochrositeMohs 3.75 · uncommonSideriteSideriteMohs 4 · commonSmithsoniteSmithsoniteMohs 4.5 · uncommon

Organic Gems (3)

AmberAmberMohs 2.5 · uncommonPearlPearlMohs 3 · uncommonRed CoralRed CoralMohs 3.5 · rare

Oxide Minerals (3)

IlmeniteIlmeniteMohs 5.5 · commonPyrolusitePyrolusiteMohs 6.25 · commonRutileRutileMohs 6.5 · common

Hydroxide Minerals (2)

BruciteBruciteMohs 2.5 · uncommonLimoniteLimoniteMohs 4.5 · common

Gemstones (1)

AmmoliteAmmoliteMohs 7 · common

Feldspar Group (1)

FeldsparFeldsparMohs 6–6.5 · common

Tektites (1)

MoldaviteMoldaviteMohs 5.5 · rare

Organic Gem Materials (1)

JetJetMohs 3 · uncommon

Arsenate Minerals (1)

MimetiteMimetiteMohs 3.75 · uncommon

Carbonaceous Rocks (1)

ShungiteShungiteMohs 3.5 · uncommon

Halide Minerals (1)

SylviteSylviteMohs 2 · uncommon

Borate Minerals (1)

UlexiteUlexiteMohs 2.5 · uncommon

Vanadate Minerals (1)

VanadiniteVanadiniteMohs 3 · uncommon

Molybdate Minerals (1)

WulfeniteWulfeniteMohs 3 · uncommon

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