Gray rocks & minerals
Gray rocks and minerals are extremely common in the field. Hardness, density, and how the specimen breaks (fracture vs. cleavage) tell you more than color alone.
Showing 481–600 of 744 gray rocks (page 5 of 7).
Granitic Pegmatitecommonigneous · Mohs 6-7white, pink, gray
Grape Agatecommonmineral · Mohs 6.5-7purple, violet, lavender
Graphic Granitecommonigneous · Mohs 6-7white, gray, pink- No imageGraţianiteraremineral · Mohs 3-3.5gray, black
Gray Agatecommonmineral · Mohs 6.5-7gray, gray, white- Gray Agatecommonmineral · Mohs 6.5-7gray, gray, white
Gray Baritecommonmineral · Mohs 3-3.5gray, white, colorless
Gypsitecommonsedimentary · Mohs 1.5-2white, gray, yellowish- No imageHaggertyiteraremineral · Mohs 5gray
- No imageHakite-(Cd)raremineral · Mohs 3-4gray, black
- No imageHakite-(Zn)raremineral · Mohs 3-4gray, black
Hanksiteraremineral · Mohs 3-3.5colorless, gray, grayish black
Harmotomeuncommonmineral · Mohs 4.5white, gray, yellow- No imageHemusiteraremineral · Mohs ~4gray
- No imageHenryiteraremineral · Mohs 3.5gray
Herzenbergiteraremineral · Mohs ~2black, gray
Hieratiteraremineral · Mohs ~2.5colorless, white, gray- No imageHilliteraremineral · Mohs 3.5colorless, gray, greenish gray
Hollingworthiteraremineral · Mohs >6gray
Hydrocerussiteraremineral · Mohs 3.5white, colorless, gray
Hydroxykenomicroliteraremineral · Mohs ~5colorless, gray, yellow-orange- No imageIndigo Gabbrocommonigneous · Mohs 6-7black, dark purple, gray
Iodargyriteraremineral · Mohs 1.5yellow, colorless, pale yellow
Iridarseniteraremineral · Mohs 5-5.5gray- No imageIronstonesedimentarygray, brown
Isoferroplatinumraremineral · Mohs 5gray, dark gray- No imageJacutingaiteraremineral · Mohs ~3.5gray
Jalpaiteuncommonmineral · Mohs 2-2.5gray, dark gray
Jasp-Agatecommonmineral · Mohs 6.5-7red, yellow, brown
Jaspilitecommonsedimentary · Mohs 6-7red, gray, silver
Johannseniteraremineral · Mohs 6brown, brownish black, greenish
Junoiteraremineral · Mohs 3.5-4gray
Juonniiteraremineral · Mohs 4-4.5bright orange, colorless, light yellow
Kaatialaiteraremineral · Mohs 2white, greenish blue, gray
Kainitecommonmineral · Mohs 2.5-3colorless, blue, violet- No imageKalgoorlieiteraremineral · Mohs 2-3white, gray
Kalsiliteraremineral · Mohs 6colorless, gray, gray white
Kashiniteraremineral · Mohs 7.5gray, black- No imageKeiliteraremineral · Mohs ~4gray
- No imageKeutschiteraremineral · Mohs 3-4gray, black
Kiddcreekiteraremineral · Mohs 4gray, gray brown- No imageKingstoniteraremineral · Mohs ~6gray
- No imageKolariteraremineral · Mohs 2gray
Kotulskiteraremineral · Mohs 4-4.5gray, steel gray
Kruťaiteraremineral · Mohs 4gray
Kuksiteraremineral · Mohs 5gray- No imageKupčíkiteraremineral · Mohs 3.5gray
- No imageKuramiteraremineral · Mohs 5gray, steel gray
- No imageKuriliteraremineral · Mohs 3gray, steel gray
Kyanite Bladecommonmineral · Mohs 4.5-7blue, white, gray
Lacroixiteraremineral · Mohs 4.5colorless, gray, gray white
Lanarkiteuncommonmineral · Mohs 2-2.5greenish white, gray, gray white
Langbeiniteuncommonmineral · Mohs 3.5-4colorless, violet, greenish- No imageLarniteraremineral · Mohs 6colorless, gray
Lawsoniteuncommonmineral · Mohs 6colorless, white, gray- No imageLead Ironraremineral · Mohs 2.5-3gray, lead-gray, black
Leadhilliteraremineral · Mohs 2.5-3colorless, gray, yellowish- No imageLeland Blueigneousblue, gray, green
- No imageLenaiteraremineral · Mohs 4-4.5gray
- No imageLévyclauditeraremineral · Mohs 2.5-3gray
- No imageLévyne-Cauncommonmineral · Mohs 4-4.5white, grayish white, reddish white
- No imageLévyne-Nauncommonmineral · Mohs 4-4.5white, grayish white, reddish white
- No imageLimb Castcommonfossil · Mohs 7clear, white, gray
Lindströmiteraremineral · Mohs 3-3.5gray, tin white- No imageLiuiteraremineral · Mohs 6-7silver-white, gray
Louisiana Opaluncommonmineral · Mohs 5.5-6brown, tan, gray
Löweiteraremineral · Mohs 2.5-3colorless, gray, pale yellow- No imageLukkulaisvaaraiteraremineral · Mohs ~4gray
- No imageLuxembourgiteraremineral · Mohs 3gray
Luzoniteuncommonmineral · Mohs 3.5gray, dark pink brown, red
Magnesio-arfvedsoniteraremineral · Mohs 5-6black, gray- No imageMagnesiorowlandite-(Y)raremineral · Mohs 5-5.5gray, white
Magnesium Carbonatecommonmineral · Mohs 3.5-4.5white, colorless, gray- No imageMajzlaniteraremineral · Mohs 2.5gray
Makovickyiteraremineral · Mohs 3.5gray
Manatee Bonecommonfossil · Mohs 3-5tan, brown, gray
Margariteuncommonmineral · Mohs 3.5-4.5white, gray, pinkish gray
Marićiteraremineral · Mohs 4-4.5colorless, gray, gray white
Mascagniteuncommonmineral · Mohs 2-2.5white, colorless, gray
Matilditeuncommonmineral · Mohs 2.5gray, iron black- No imageMavlyanoviteraremineral · Mohs ~7white, gray
Mckelveyite-(Y)raremineral · Mohs 3.5-4yellow, black, greenish gray
Melaconitecommonmineral · Mohs 3black, gray
Mendipiteraremineral · Mohs 2.5white, colorless, gray
Merwiniteraremineral · Mohs 6colorless, gray, pale green
Messeliteraremineral · Mohs 3.5colorless, greenish white, gray- No imageMetaköttigiteraremineral · Mohs 1.5-2.5gray
- No imageMetauranopiliteraremineral · Mohs 2-3yellow, gray, grayish green
Miassiteraremineral · Mohs 5.5-6gray- No imageMiharaiteraremineral · Mohs 4gray
Milleriteuncommonmineral · Mohs 3-3.5brass yellow, bronze, greenish gray
Mogániteuncommonmineral · Mohs 6gray
Monohydrocalciteraremineral · Mohs 2-3white, gray, gray white
Montana Agatecommonmineral · Mohs 6.5-7yellow, orange, brown
Monteregianite-(Y)raremineral · Mohs ~3.5colorless, greenish, gray
Monticelliteuncommonmineral · Mohs 5-5.5colorless, greenish gray, gray
Monzonitecommonigneous · Mohs 6-7gray, light gray, pinkish gray
Morelanditeraremineral · Mohs 4.5greenish yellow, gray, grayish yellow
Mozarkitecommonmineral · Mohs 6.5-7red, pink, white- No imageMurchisiteraremineral · Mohs 2.5-3white, colorless, gray
Nahcoliteuncommonmineral · Mohs 2.5white, colorless, gray- No imageNative Seleniumraremineral · Mohs 2gray, purple gray, reddish
Natroncommonmineral · Mohs 1-1.5colorless, white, gray
Naujakasiteraremineral · Mohs 2-3gray, pearl white, silver white
Nickelskutteruditeuncommonmineral · Mohs 5.5-6tin white, gray
Nifontoviteraremineral · Mohs 3.5-5colorless, gray- No imageNiningeriteraremineral · Mohs 3.5-4gray
Niteruncommonmineral · Mohs 2white, colorless, gray
Nitratineraremineral · Mohs 1.5-2white, colorless, gray
Nitrocalcitecommonmineral · Mohs 1-2white, gray, gray white
Nodulecommonsedimentarygray, brown, black
Nodules Filled With Opalcommonmineral · Mohs 5.5-6.5white, gray, brown
Nordströmiteraremineral · Mohs 2-2.5gray
Northupiteuncommonmineral · Mohs 3.5-4brownish, colorless, gray
Noseanuncommonmineral · Mohs 5.5gray, white, blue
Novaculitecommonsedimentary · Mohs 7white, gray, black
Nuffielditeraremineral · Mohs 3.5-4gray, steel gray, grayish green
Omarsedimentarydark gray, gray, tannish gray
Oolitecommonsedimentary · Mohs 3white, gray, tan- No imageOolitic Agatecommonmineral · Mohs 6.5-7white, gray, brown
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