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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.

Browse by color:Black rocksWhite rocksGray rocksBrown rocksGreen rocksPink rocksYellow rocksRed rocksBlue rocksPurple rocksOrange rocksClear rocksMulticolored rocks
Browse by type:Types of Igneous RocksTypes of Sedimentary RocksTypes of Metamorphic RocksMinerals A to ZGemstonesMetals & Alloys

Minerals (103)

Actinolite specimen: green and dark green mineralActinoliteMohs 5–6 · commonAegirine specimen: dark green and black mineralAegirineMohs 6–6.5 · commonAlabaster specimen: white and cream mineralAlabasterMohs 1.5–2 · commonAlbite specimen: white and colorless mineralAlbiteMohs 6–6.5 · commonAlmandine specimen: deep red and reddish brown mineralAlmandineMohs 7–7.5 · commonAmazonite specimen: blue-green and turquoise mineralAmazoniteMohs 6 · uncommonAmetrine specimen: purple and yellow bicolor zoning mineralAmetrineMohs 7 · commonAnalcime specimen: colorless and white mineralAnalcimeMohs 5–5.5 · commonAndalusite specimen: reddish brown and olive green mineralAndalusiteMohs 6.5–7.5 · commonAndradite specimen: yellow-green (demantoid) and brown mineralAndraditeMohs 6.5–7 · commonAnhydrite specimen: colorless and white mineralAnhydriteMohs 3–3.5 · commonApatite specimen: green and blue mineralApatiteMohs 5 · commonApophyllite specimen: colorless and white mineralApophylliteMohs 4.5–5 · commonAragonite specimen: colorless and white mineralAragoniteMohs 3.5–4 · commonArsenopyrite specimen: silver-white and steel-gray mineralArsenopyriteMohs 5.5–6 · commonAstrophyllite specimen: golden-yellow and bronze mineralAstrophylliteMohs 3–3.5 · commonAtacamite specimen: bright green and dark green mineralAtacamiteMohs 3–3.5 · commonAugite specimen: black and dark green mineralAugiteMohs 5.5–6 · commonAurichalcite specimen: pale green and blue-green mineralAurichalciteMohs 1–2 · commonAventurine specimen: green and blue mineralAventurineMohs 6.5–7 · commonAxinite specimen: clove-brown and violet-brown mineralAxiniteMohs 6.5–7 · commonAzurite specimen: deep blue and azure blue mineralAzuriteMohs 3.5 · uncommonBaryte specimen: colorless and white mineralBaryteMohs 3–3.5 · commonBauxite specimen: reddish brown and tan mineralBauxiteMohs 1–3 · commonBenitoite specimen: blue and colorless mineralBenitoiteMohs 6–6.5 · commonBeryl specimen: green (emerald) and blue (aquamarine) mineralBerylMohs 7.5–8 · commonBiotite specimen: black and dark brown mineralBiotiteMohs 2.5–3 · commonBismuth specimen: silvery white and pinkish iridescent tarnish (yellow, red, blue hues) mineralBismuthMohs 2–2.5 · commonBorax specimen: white and colorless mineralBoraxMohs 2–2.5 · commonBornite specimen: copper red to brownish bronze (fresh) and iridescent purple-blue tarnish (peacock ore) mineralBorniteMohs 3–3.25 · commonCalcite specimen: colorless and white mineralCalciteMohs 3 · commonCassiterite specimen: brown and black mineralCassiteriteMohs 6–7 · commonCavansite specimen: bright blue and deep blue mineralCavansiteMohs 3–4 · commonCelestine specimen: colorless and pale blue mineralCelestineMohs 3–3.5 · commonCerussite specimen: colorless and white mineralCerussiteMohs 3–3.5 · commonChabazite specimen: white and colorless mineralChabaziteMohs 4–5 · commonChalcedony specimen: blue-gray and white mineralChalcedonyMohs 6.5–7 · commonChalcocite specimen: blackish lead-gray and black mineralChalcociteMohs 2.5–3 · commonChalcopyrite specimen: brass yellow and golden yellow mineralChalcopyriteMohs 3.5–4 · commonCharoite specimen: lilac and purple mineralCharoiteMohs 5–6 · commonChiastolite specimen: gray and brown mineralChiastoliteMohs 6.5–7.5 · commonChlorite specimen: green and dark green mineralChloriteMohs 2–2.5 · commonChromite specimen: black and brownish black mineralChromiteMohs 5.5 · commonChrysoberyl specimen: yellow and greenish-yellow mineralChrysoberylMohs 8.5 · commonChrysocolla specimen: blue-green and cyan mineralChrysocollaMohs 2.5 · commonChrysoprase specimen: apple-green and green (sometimes with darker spots) mineralChrysopraseMohs 6.5–7 · commonCinnabar specimen: red and brownish red mineralCinnabarMohs 2–2.5 · commonCobaltite specimen: silvery white with pink/reddish tint and steel gray mineralCobaltiteMohs 5.5 · commonColemanite specimen: colorless and white mineralColemaniteMohs 4–4.5 · commonCopper specimen: copper red (fresh) and brown to green-black (tarnished) mineralCopperMohs 2.5–3 · commonCordierite specimen: blue and violet-blue mineralCordieriteMohs 7–7.5 · commonCorundum specimen: red (ruby) and blue (sapphire) mineralCorundumMohs 9 · commonCovellite specimen: indigo blue and blue-black mineralCovelliteMohs 1.5–2 · commonCrocoite specimen: bright orange-red and red mineralCrocoiteMohs 2.5–3 · commonCryolite specimen: colorless and white mineralCryoliteMohs 2.5–3 · commonCuprite specimen: red and dark red mineralCupriteMohs 3.5–4 · commonDanburite specimen: colorless and pale yellow mineralDanburiteMohs 7–7.5 · commonDatolite specimen: colorless and white mineralDatoliteMohs 5–5.5 · commonDesert Rose specimen: tan and brown mineralDesert RoseMohs 2 · commonDiaspore specimen: colorless and white mineralDiasporeMohs 6.5–7 · commonDiopside specimen: light to dark green and white mineralDiopsideMohs 5.5–6.5 · commonDioptase specimen: emerald green and bluish green mineralDioptaseMohs 5 · commonDumortierite specimen: blue and violet-blue mineralDumortieriteMohs 7–8.5 · commonElbaite specimen: pink and green mineralElbaiteMohs 7–7.5 · commonEpidote specimen: pistachio green and yellowish green mineralEpidoteMohs 6–7 · commonErythrite specimen: pink and crimson red mineralErythriteMohs 1.5–2.5 · commonEudialyte specimen: red and pink mineralEudialyteMohs 5–5.5 · commonFluorite specimen: purple and green mineralFluoriteMohs 4 · commonForsterite specimen: pale yellow-green and olive green mineralForsteriteMohs 6.5–7 · commonFranklinite specimen: black and brownish black mineralFrankliniteMohs 5.5–6.5 · commonGalena specimen: lead-gray and silvery gray mineralGalenaMohs 2.5 · commonGibbsite specimen: white and gray mineralGibbsiteMohs 2.5–3.5 · commonGlauconite specimen: green and dark green mineralGlauconiteMohs 2–3 · commonGoethite specimen: brown and yellowish brown mineralGoethiteMohs 5–5.5 · commonGoshenite specimen: colorless and white mineralGosheniteMohs 7.5–8 · commonGraphite specimen: black and steel-gray mineralGraphiteMohs 1–2 · commonGrossular specimen: colorless and green mineralGrossularMohs 6.5–7.5 · commonGypsum specimen: colorless and white mineralGypsumMohs 2 · commonHalite specimen: colorless and white mineralHaliteMohs 2–2.5 · commonHauyne specimen: blue and sky blue mineralHauyneMohs 5.5–6 · commonHeliodor specimen: mineralHeliodorMohs 5 · commonHematite specimen: metallic gray and black mineralHematiteMohs 6 · commonHemimorphite specimen: white and colorless mineralHemimorphiteMohs 4.5–5 · commonHessonite specimen: orange-brown and cinnamon mineralHessoniteMohs 6.5–7 · commonHeulandite specimen: white and colorless mineralHeulanditeMohs 3.5–4 · commonHornblende specimen: black and dark green mineralHornblendeMohs 5–6 · commonHowlite specimen: white with gray veining mineralHowliteMohs 3–3.5 · commonJade specimen: mineralJadeMohs 5 · commonKyanite specimen: blue and green mineralKyaniteMohs 5 · uncommonLabradorite specimen: gray and blue flash mineralLabradoriteMohs 6 · commonLepidolite specimen: pink and purple mineralLepidoliteMohs 2.5 · uncommonMagnetite specimen: black and iron-black mineralMagnetiteMohs 5.5–6.5 · commonMalachite specimen: green and dark green mineralMalachiteMohs 4 · commonMuscovite specimen: colorless and silvery white mineralMuscoviteMohs 2–2.5 (on cleavage), up to 4 across · commonOlivine specimen: olive green and yellowish green mineralOlivineMohs 6.5–7 · commonOnyx specimen: mineralOnyxMohs 6.5–7 · commonPyrite specimen: brass yellow and pale gold mineralPyriteMohs 6.5 · commonRhodonite specimen: pink and rose mineralRhodoniteMohs 6 · uncommonSatin Spar specimen: white and cream mineralSatin SparMohs 2 · commonSelenite specimen: colorless and white mineralSeleniteMohs 2 · commonSodalite specimen: blue and blue with white veins mineralSodaliteMohs 5.5 · commonTalc specimen: white and pale green mineralTalcMohs 1 · commonTourmaline specimen: black and green mineralTourmalineMohs 7–7.5 · common

Igneous Rocks (32)

Andesite specimen: gray and dark gray igneous rockAndesiteMohs 5–6 · commonAnorthosite specimen: white and gray igneous rockAnorthositeMohs 6 · commonAplite specimen: white and pink igneous rockApliteMohs 6 · commonBasalt specimen: black and dark gray igneous rockBasaltMohs 6 · commonBasaltic Andesite specimen: dark gray and black igneous rockBasaltic AndesiteMohs 6 · commonDacite specimen: gray and light gray igneous rockDaciteMohs 6–7 · commonDiabase specimen: igneous rockDiabaseMohs 6 · commonDiorite specimen: salt-and-pepper gray and dark gray igneous rockDioriteMohs 6–7 · commonDunite specimen: olive green and yellowish green igneous rockDuniteMohs 6.5–7 · commonGabbro specimen: dark gray and black igneous rockGabbroMohs 5–6.5 · commonGranite specimen: pink and gray igneous rockGraniteMohs 6.5 · commonGranodiorite specimen: light gray and gray igneous rockGranodioriteMohs 6–7 · commonIgnimbrite specimen: tan and pink igneous rockIgnimbriteMohs 6 · commonKimberlite specimen: blue-gray ('blue ground') and yellow ('yellow ground', weathered) igneous rockKimberliteMohs 5–6.5 · commonLarvikite specimen: dark gray and blue gray igneous rockLarvikiteMohs 6 · commonMonzonite specimen: gray and pink igneous rockMonzoniteMohs 6 · commonNorite specimen: black and dark gray igneous rockNoriteMohs 6 · commonObsidian specimen: black and brown igneous rockObsidianMohs 5.5 · commonPegmatite specimen: pink and white igneous rockPegmatiteMohs 6–7 · commonPeridotite specimen: green and dark green igneous rockPeridotiteMohs 5.5–7 · commonPhonolite specimen: gray and greenish gray igneous rockPhonoliteMohs 6 · uncommonPorphyry specimen: purple and red igneous rockPorphyryMohs 5–7 · commonPumice specimen: white and light gray igneous rockPumiceMohs 5–6 · commonRainbow Obsidian specimen: black with rainbow sheen and purple igneous rockRainbow ObsidianMohs 5.5 · uncommonRhyolite specimen: pink and gray igneous rockRhyoliteMohs 5.5–7 · commonScoria specimen: dark red and black igneous rockScoriaMohs 5–6 · commonSnowflake Obsidian specimen: black and black and white igneous rockSnowflake ObsidianMohs 5.5 · commonSyenite specimen: gray and pink igneous rockSyeniteMohs 5.5–6.5 · commonTephrite specimen: dark gray and black igneous rockTephriteMohs 6 · uncommonTonalite specimen: white and gray igneous rockTonaliteMohs 6 · commonTrachyte specimen: light gray and tan igneous rockTrachyteMohs 6 · commonTuff specimen: light gray and tan igneous rockTuffMohs 2–5 · common

Silicate Minerals (29)

Jadeite specimen: green and white gemstoneJadeiteMohs 6.75 · rareKaolinite specimen: white and cream mineralKaoliniteMohs 2 · commonLazurite specimen: blue and deep blue mineralLazuriteMohs 5.25 · rareLeucite specimen: white and gray mineralLeuciteMohs 5.75 · uncommonMicrocline specimen: white and cream mineralMicroclineMohs 6 · commonMorganite specimen: pink and peach gemstoneMorganiteMohs 7.75 · rareMoss Agate specimen: colorless and white gemstoneMoss AgateMohs 6.75 · commonNatrolite specimen: colorless and white mineralNatroliteMohs 5.5 · uncommonNepheline specimen: colorless and white mineralNephelineMohs 6 · uncommonOrthoclase specimen: colorless and white mineralOrthoclaseMohs 6 · commonPhlogopite specimen: brown and yellow mineralPhlogopiteMohs 2.75 · commonPrasiolite specimen: green and pale green gemstonePrasioliteMohs 7 · uncommonPrehnite specimen: green and yellow-green mineralPrehniteMohs 6.25 · uncommonPyrope specimen: red and deep red gemstonePyropeMohs 7.25 · uncommonPyrophyllite specimen: white and gray mineralPyrophylliteMohs 1.5 · commonScapolite specimen: white and pink mineralScapoliteMohs 6 · uncommonSchorl specimen: black and bluish black mineralSchorlMohs 7 · commonSerpentine specimen: green and yellowish green mineralSerpentineMohs 3.5 · commonSillimanite specimen: white and gray mineralSillimaniteMohs 7 · uncommonSpessartine specimen: orange and red mineralSpessartineMohs 7 · uncommonSpodumene specimen: pink and lilac mineralSpodumeneMohs 6.75 · uncommonStaurolite specimen: reddish brown and brown mineralStauroliteMohs 7.25 · uncommonStilbite specimen: white and pink mineralStilbiteMohs 3.75 · commonSugilite specimen: purple and violet mineralSugiliteMohs 6 · rareSunstone specimen: orange and red gemstoneSunstoneMohs 6.5 · uncommonTitanite specimen: green and yellow mineralTitaniteMohs 5.5 · uncommonTremolite specimen: white and gray mineralTremoliteMohs 5.5 · commonVesuvianite specimen: green and brown mineralVesuvianiteMohs 6.5 · uncommonZoisite specimen: green and pink mineralZoisiteMohs 6.5 · uncommon

Sedimentary Rocks (28)

Arkose specimen: pink and red sedimentary rockArkoseMohs 6 · commonBanded Iron Formation specimen: red and reddish brown sedimentary rockBanded Iron FormationMohs 5–7 · commonBreccia specimen: sedimentary rockBrecciaMohs 3.5 · commonCaliche specimen: white and cream sedimentary rockCalicheMohs 3 · commonChalk specimen: white and pale gray sedimentary rockChalkMohs 1–2 · commonChert specimen: gray and white sedimentary rockChertMohs 6.5–7 · commonClaystone specimen: gray and red sedimentary rockClaystoneMohs 2–3 · commonCoal specimen: black and brownish black sedimentary rockCoalMohs 1–2.5 · commonConglomerate specimen: variegated and gray sedimentary rockConglomerateMohs 3–7 · commonCoquina specimen: white and tan sedimentary rockCoquinaMohs 3–4 · commonDiatomite specimen: white and cream sedimentary rockDiatomiteMohs 1.5 · commonDolomite specimen: white and gray sedimentary rockDolomiteMohs 3.5–4 · commonDolostone specimen: tan and gray sedimentary rockDolostoneMohs 3.5 · commonEvaporite specimen: white and clear sedimentary rockEvaporiteMohs 2.5 · commonFlint specimen: black and dark gray sedimentary rockFlintMohs 6.5–7 · commonGraywacke specimen: dark gray and greenish gray sedimentary rockGraywackeMohs 6 · commonIronstone specimen: brown and red brown sedimentary rockIronstoneMohs 4 · commonLaterite specimen: red and orange sedimentary rockLateriteMohs 4 · commonLimestone specimen: white and gray sedimentary rockLimestoneMohs 3 · commonMarl specimen: gray and cream sedimentary rockMarlMohs 2.5 · commonMookaite specimen: yellow and red sedimentary rockMookaiteMohs 6.5 · uncommonMudstone specimen: gray and brown sedimentary rockMudstoneMohs 2–3 · commonOolite specimen: white and cream sedimentary rockOoliteMohs 3 · commonRock Salt specimen: clear and white sedimentary rockRock SaltMohs 2.5 · commonSandstone specimen: tan and brown sedimentary rockSandstoneMohs 6 · commonShale specimen: gray and black sedimentary rockShaleMohs 2–3 · commonSiltstone specimen: gray and tan sedimentary rockSiltstoneMohs 3.5 · commonTravertine specimen: white and cream sedimentary rockTravertineMohs 3–4 · common

Metamorphic Rocks (19)

Amphibolite specimen: black and dark green metamorphic rockAmphiboliteMohs 5.5 · commonAnthracite specimen: black and steel gray metamorphic rockAnthraciteMohs 2.5 · commonBlueschist specimen: blue and blue gray metamorphic rockBlueschistMohs 5.5 · uncommonEclogite specimen: green (omphacite) and red (garnet) metamorphic rockEclogiteMohs 6–7.5 · commonGneiss specimen: gray and pink metamorphic rockGneissMohs 6–7 · commonGreenschist specimen: green and gray green metamorphic rockGreenschistMohs 4.5 · commonHornfels specimen: gray and black metamorphic rockHornfelsMohs 6 · commonMarble specimen: white and gray metamorphic rockMarbleMohs 3.5 · commonMetaconglomerate specimen: gray and white metamorphic rockMetaconglomerateMohs 6.5 · uncommonMigmatite specimen: pink and black and light and dark layered metamorphic rockMigmatiteMohs 5–7 · commonMylonite specimen: gray and black metamorphic rockMyloniteMohs 5.5 · uncommonPhyllite specimen: silvery gray and greenish gray metamorphic rockPhylliteMohs 2.5–4 · commonQuartzite specimen: white and gray metamorphic rockQuartziteMohs 7 · commonSchist specimen: silver-gray and golden (mica-rich) metamorphic rockSchistMohs 2.5–7 · commonSerpentinite specimen: green and dark green metamorphic rockSerpentiniteMohs 2.5–4 · commonSkarn specimen: green and brown metamorphic rockSkarnMohs 5.5 · uncommonSlate specimen: gray and black metamorphic rockSlateMohs 3.5 · commonSoapstone specimen: gray and green metamorphic rockSoapstoneMohs 1–2.5 · commonUnakite specimen: pink and green mottled and salmon metamorphic rockUnakiteMohs 6.5 · common

Quartz Family (16)

Agate specimen: blue and brown mineralAgateMohs 7 · commonAmethyst specimen: purple and violet crystalAmethystMohs 7 · commonBloodstone specimen: dark green with red spots mineralBloodstoneMohs 7 · commonBlue Lace Agate specimen: pale blue and white mineralBlue Lace AgateMohs 7 · uncommonCarnelian specimen: orange and red-orange mineralCarnelianMohs 7 · commonCitrine specimen: yellow and orange crystalCitrineMohs 7 · uncommonClear Quartz specimen: colorless and white mineralClear QuartzMohs 7 · commonDalmatian Jasper specimen: cream and white mineralDalmatian JasperMohs 7 · commonDendritic Agate specimen: white and gray mineralDendritic AgateMohs 7 · commonFire Agate specimen: brown and orange mineralFire AgateMohs 7 · uncommonJasper specimen: red and yellow mineralJasperMohs 7 · commonMilky Quartz specimen: milky white and white crystalMilky QuartzMohs 7 · commonQuartz specimen: colorless and white crystalQuartzMohs 7 · commonRose Quartz specimen: pink and rose mineralRose QuartzMohs 7 · commonSmoky Quartz specimen: brown and gray crystalSmoky QuartzMohs 7 · commonTiger's Eye specimen: golden brown and yellow mineralTiger's EyeMohs 7 · common

Metals & Alloys (16)

Aluminum specimen: silver and light gray metalAluminumMohs 2.75 · commonBrass specimen: yellow gold and brass yellow metalBrassMohs 3.5 · commonBronze specimen: brown and bronze metalBronzeMohs 3 · commonChrome specimen: mirror silver and blue-gray metalChromeMohs 8.5 · commonIron specimen: silver-gray and dark gray metalIronMohs 4 · commonLead specimen: bluish gray and dark gray metalLeadMohs 1.5 · commonNickel specimen: silver and gray metalNickelMohs 4 · commonPewter specimen: dull silver and gray metalPewterMohs 2.5 · commonRose Gold specimen: rose gold and pink gold metalRose GoldMohs 3 · commonStainless Steel specimen: silver and gray metalStainless SteelMohs 5.5 · commonSterling Silver specimen: silver and white silver metalSterling SilverMohs 2.7 · commonTin specimen: silver and gray metalTinMohs 1.5 · commonTitanium specimen: silver and gray metalTitaniumMohs 6 · commonTungsten specimen: dark gray and steel gray metalTungstenMohs 7.5 · commonWhite Gold specimen: white silver and pale gold metalWhite GoldMohs 3 · commonZinc specimen: bluish silver and gray metalZincMohs 2.5 · common

Semi-Precious Stones (13)

Aquamarine specimen: light blue and blue-green gemstoneAquamarineMohs 7.5 · uncommonGarnet specimen: red and orange gemstoneGarnetMohs 7 · commonIolite specimen: violet-blue and blue gemstoneIoliteMohs 7 · uncommonKunzite specimen: pink and lilac gemstoneKunziteMohs 7 · uncommonLapis Lazuli specimen: deep blue and blue mineralLapis LazuliMohs 5.5 · uncommonMoonstone specimen: white and gray gemstoneMoonstoneMohs 6 · uncommonOpal specimen: white and black gemstoneOpalMohs 5.5 · uncommonPeridot specimen: yellow-green and olive green gemstonePeridotMohs 6.5 · uncommonSpinel specimen: red and pink gemstoneSpinelMohs 8 · uncommonTanzanite specimen: blue and violet gemstoneTanzaniteMohs 6.5 · legendaryTopaz specimen: colorless and blue gemstoneTopazMohs 8 · uncommonTurquoise specimen: blue and blue-green mineralTurquoiseMohs 6 · uncommonZircon specimen: colorless and blue gemstoneZirconMohs 7.5 · uncommon

Materials (7)

Aura Quartz specimen: iridescent and blue materialAura QuartzMohs 7 · commonBlue Goldstone specimen: dark blue and navy materialBlue GoldstoneMohs 5.5 · commonCherry Quartz specimen: pink and red materialCherry QuartzMohs 5.5 · commonGlass specimen: green and brown materialGlassMohs 5.5 · commonGoldstone specimen: copper and brown materialGoldstoneMohs 5.5 · commonOpalite specimen: milky white and blue materialOpaliteMohs 5.5 · commonSlag Glass specimen: blue and green materialSlag GlassMohs 5.5 · common

Sulfide Minerals (6)

Marcasite specimen: pale brass yellow and tin white mineralMarcasiteMohs 6 · commonMolybdenite specimen: lead gray and bluish gray mineralMolybdeniteMohs 1.25 · uncommonOrpiment specimen: lemon yellow and golden yellow mineralOrpimentMohs 1.75 · uncommonRealgar specimen: red and orange-red mineralRealgarMohs 1.75 · uncommonSphalerite specimen: brown and black mineralSphaleriteMohs 3.75 · commonStibnite specimen: lead gray and steel gray mineralStibniteMohs 2 · uncommon

Precious Stones (5)

Alexandrite specimen: green in daylight and red in incandescent light gemstoneAlexandriteMohs 8.5 · epicDiamond specimen: colorless and yellow gemstoneDiamondMohs 10 · legendaryEmerald specimen: green and bluish green gemstoneEmeraldMohs 7.5 · legendaryRuby specimen: red and pinkish red gemstoneRubyMohs 9 · rareSapphire specimen: blue and pink gemstoneSapphireMohs 9 · rare

Phosphate Minerals (5)

Lazulite specimen: blue and sky blue mineralLazuliteMohs 5.75 · rarePyromorphite specimen: green and yellow-green mineralPyromorphiteMohs 3.75 · uncommonVariscite specimen: green and blue-green mineralVarisciteMohs 4 · uncommonVivianite specimen: blue and green mineralVivianiteMohs 1.75 · uncommonWavellite specimen: green and yellow mineralWavelliteMohs 3.75 · uncommon

Native Elements (4)

Gold specimen: gold and yellow mineralGoldMohs 2.5 · legendaryPlatinum specimen: silver and gray mineralPlatinumMohs 4.25 · legendarySilver specimen: silver white and gray mineralSilverMohs 2.75 · rareSulfur specimen: yellow and bright yellow mineralSulfurMohs 2 · common

Carbonates (4)

Magnesite specimen: white and gray mineralMagnesiteMohs 4 · commonRhodochrosite specimen: pink and rose red mineralRhodochrositeMohs 3.75 · uncommonSiderite specimen: yellowish brown and brown mineralSideriteMohs 4 · commonSmithsonite specimen: blue green and green mineralSmithsoniteMohs 4.5 · uncommon

Organic Gems (3)

Amber specimen: yellow and orange gemstoneAmberMohs 2.5 · uncommonPearl specimen: white and cream gemstonePearlMohs 3 · uncommonRed Coral specimen: red and pink gemstoneRed CoralMohs 3.5 · rare

Oxide Minerals (3)

Ilmenite specimen: black and iron-black mineralIlmeniteMohs 5.5 · commonPyrolusite specimen: black and steel gray mineralPyrolusiteMohs 6.25 · commonRutile specimen: reddish brown and black mineralRutileMohs 6.5 · common

Hydroxide Minerals (2)

Brucite specimen: white and pale green mineralBruciteMohs 2.5 · uncommonLimonite specimen: yellowish brown and brown mineralLimoniteMohs 4.5 · common

Gemstones (1)

Ammolite specimen: gemstoneAmmoliteMohs 7 · common

Feldspar Group (1)

Feldspar specimen: white and pink mineralFeldsparMohs 6–6.5 · common

Tektites (1)

Moldavite specimen: forest green and olive green gemstoneMoldaviteMohs 5.5 · rare

Organic Gem Materials (1)

Jet specimen: black and dark brown gemstoneJetMohs 3 · uncommon

Arsenate Minerals (1)

Mimetite specimen: yellow and orange mineralMimetiteMohs 3.75 · uncommon

Carbonaceous Rocks (1)

Shungite specimen: black and dark gray sedimentary rockShungiteMohs 3.5 · uncommon

Halide Minerals (1)

Sylvite specimen: colorless and white mineralSylviteMohs 2 · uncommon

Borate Minerals (1)

Ulexite specimen: white and colorless mineralUlexiteMohs 2.5 · uncommon

Vanadate Minerals (1)

Vanadinite specimen: red and orange mineralVanadiniteMohs 3 · uncommon

Molybdate Minerals (1)

Wulfenite specimen: orange and yellow mineralWulfeniteMohs 3 · uncommon

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