Mohs hardness 4 rocks & minerals
Mohs hardness 4 is referenced by fluorite. Minerals at this hardness scratch with a steel knife but are too hard for a coin.
Showing 1201–1320 of 1910 rocks (page 11 of 16).
- No imageNolaniteraremineral · Mohs 4.5bronze, brownish-black
- No imageNolzeiteraremineral · Mohs 4brown, yellow-brown, pale yellow
Nordgauiteraremineral · Mohs 3-4colorless, white- No imageNorilskiteraremineral · Mohs 3-4silver-white, pale yellow
Norsethiteraremineral · Mohs 3.5white, colorless, gray
Northupiteuncommonmineral · Mohs 3.5-4white, gray, yellow
Novákiteraremineral · Mohs 3-3.5silver-white, gray- No imageNovodnepriteraremineral · Mohs 3.5white, yellowish-white
Nowackiiteraremineral · Mohs 3-3.5black
Nuffielditeraremineral · Mohs 3.5lead-gray, tin-white
Nukundamiteraremineral · Mohs 3.5dark brown, bronze- No imageNuwaiteraremineral · Mohs 3.5white, gray
Nyerereiteraremineral · Mohs 3.5colorless, white, pale yellow- No imageNyholmiteraremineral · Mohs 3-4white, colorless
- No imageOberthüriteraremineral · Mohs 3.5-4black, brown
Octahedral Fluoritecommonmineral · Mohs 4purple, blue, green- No imageOeniteraremineral · Mohs 3.5white, pale yellow
Offretiteraremineral · Mohs 4white, colorless, yellowish- No imageOftedaliteraremineral · Mohs 4-5white, colorless, pinkish-white
Ogdensburgiteraremineral · Mohs 3-4yellow, yellowish-orange, brownish-yellow- No imageOgnititeraremineral · Mohs 3.5-4bronze, brownish-yellow
Ohmiliteraremineral · Mohs 3.5colorless, white, pale yellow
Okanoganite-(Y)raremineral · Mohs 4-5yellow, brown, reddish-brown
Okeniteuncommonmineral · Mohs 4.5-5white, colorless, yellowish- No imageOkruschiteraremineral · Mohs 4pink, pale pink
Oldhamiteraremineral · Mohs 4yellowish-brown, brown, gray- No imageOlekminskiteraremineral · Mohs 3.5white, colorless
Olgiteraremineral · Mohs 4colorless, white, pale yellow
Olmsteaditeraremineral · Mohs 3-4dark brown, black
Olsacheriteraremineral · Mohs 3-4colorless, white, pale yellow
Olympiteraremineral · Mohs 4white, colorless- No imageOmariniiteraremineral · Mohs 3.5black, dark gray
- No imageOmeiiteraremineral · Mohs 4-5tin-white
Ondrušiteraremineral · Mohs 4white, colorless- No imageOneilliteraremineral · Mohs 3-4brown, yellow-brown
Oosterboschiteraremineral · Mohs 3-3.5white, pale yellow
Orceliteraremineral · Mohs 3.5-4pale bronze, yellowish-white
Oregoniteraremineral · Mohs 4.5-5white, pale metallic yellow
Orientiteraremineral · Mohs 3.5-4brown, dark brown
Orlymaniteraremineral · Mohs 4white, pale pink- No imageOrthobranneriteraremineral · Mohs 4-5black, brownish-black
Orthocerascommonfossil · Mohs 3-4black, brown, gray- No imageOrthocuproplatinumraremineral · Mohs 4white, silver-white
- No imageOrthowalpurgiteraremineral · Mohs 3-4yellow, orange-yellow
Osarizawaiteraremineral · Mohs 3.5yellow, greenish-yellow
Otaviteraremineral · Mohs 3.5white, gray, yellowish
Oulankaiteraremineral · Mohs 3.5-4brass-yellow, grayish-yellow
Ovamboiteraremineral · Mohs 3-3.5grayish white- No imageOveriteraremineral · Mohs 4colorless, white, pale yellow
- No imageOwensiteraremineral · Mohs 3.5brass-yellow, bronze
Oyeliteraremineral · Mohs 4white, colorless
Oyoniteraremineral · Mohs 3-4black, dark brown- No imagePaariteraremineral · Mohs 3.5lead-gray, iron-black
- No imagePadmaiteraremineral · Mohs 3-4white, pale yellow
- No imagePaganoiteraremineral · Mohs 4yellow, yellowish-green, brown
Palarstanideraremineral · Mohs 3-4brass-yellow, golden-yellow
Palladiumraremineral · Mohs 4.75-5silver-white, pale gray- No imagePalladoarsenideraremineral · Mohs 3.5-4tin-white, light gray
- No imagePalladobismutharsenideraremineral · Mohs 3.5white, gray
Palladseiteraremineral · Mohs 3-4white, gray- No imagePanasqueiraiteraremineral · Mohs 4yellow, brownish-yellow
- No imagePanethiteraremineral · Mohs 3.5yellow, yellowish-brown
- No imagePaoloviteraremineral · Mohs 3.5-4white, silver-white
Papagoiteraremineral · Mohs 3-4bright blue, sky blue- No imageParabrandtiteraremineral · Mohs 3.5colorless, white, yellowish-white
Paracostibiteraremineral · Mohs 3.5-4white, gray
Paradamiteraremineral · Mohs 3.5yellow, colorless, white- No imageParadocrasiteraremineral · Mohs 3-4silver-white, tin-white
Parádsasváriteraremineral · Mohs 4white, colorless- No imageParageorgbokiiteraremineral · Mohs 3.5dark red, brown
Parahopeiteraremineral · Mohs 3.5colorless, white, yellowish-white
Paralomonosoviteraremineral · Mohs 3-4brown, yellowish-brown, reddish-brown
Paralstoniteraremineral · Mohs 4.5colorless, white, yellow
Paramontroseiteraremineral · Mohs 4-5black
Paraniite-(Y)raremineral · Mohs 3-4yellow, yellowish-orange
Pararobertsiteraremineral · Mohs 3-4white, pale yellow- No imageParaschachneriteraremineral · Mohs 3.5silver-white
Parascholziteraremineral · Mohs 3.5colorless, white- No imageParascoroditeraremineral · Mohs 3.5-4white, pale yellow
Parasibirskiteraremineral · Mohs 3-4yellow, brownish-yellow, pale yellow
Paratooite-(La)raremineral · Mohs 3-4yellow, pale yellow- No imageParawulffiteraremineral · Mohs 3-4blue, greenish-blue
Parisite-(Ce)raremineral · Mohs 4.5yellow, brown, reddish-brown- No imageParisite-(Nd)raremineral · Mohs 4.5yellow, brown, reddish-brown
- No imageParkinsoniteraremineral · Mohs 3.5dark brownish-black, black
Parsettensiteraremineral · Mohs 3-4reddish-brown, brown, orange-brown
Parwaniteraremineral · Mohs 3.5-4yellow, yellow-brown
Paulingite-Cararemineral · Mohs 4-5colorless, white
Paulingite-Kraremineral · Mohs 4-5colorless, white, yellowish
Paulkerriteraremineral · Mohs 3-4yellow, yellow-brown, tan- No imagePauloabibiteraremineral · Mohs 3.5dark brown, black
- No imagePautoviteraremineral · Mohs 3.5yellow, brown, colorless
Paxiteraremineral · Mohs 3.5silver-white, gray
Pearlscommonfossil · Mohs 2.5-4.5white, cream, pink
Peatite-(Y)raremineral · Mohs 3-4white, yellowish-white, grayish-white
Pectoliteuncommonmineral · Mohs 4.5-5white, gray, pale green
Peisleyiteraremineral · Mohs 3.5white
Pekoiteraremineral · Mohs 3.5-4lead-gray, steel-gray- No imagePenberthycroftiteraremineral · Mohs 3.5yellow, orange, brown
- No imagePenikisiteraremineral · Mohs 4white, colorless, pale yellow
Penkvilksiteraremineral · Mohs 3.5white, colorless, yellowish-white
Pentagoniteraremineral · Mohs 3-4deep blue, azure blue
Pentlanditecommonmineral · Mohs 3.5-4bronze-yellow, brownish-yellow- No imagePeprossiite-(Ce)raremineral · Mohs 3.5colorless, white
Perhamiteraremineral · Mohs 4colorless, white, gray
Perloffiteraremineral · Mohs 4dark brown, reddish brown
Permingeatiteraremineral · Mohs 3.5-4dark gray, black
Perraultiteraremineral · Mohs 3.5dark brown, reddish brown
Perryiteraremineral · Mohs 4-5bronze, yellow-brown
Peterandreseniteraremineral · Mohs 3-4colorless, white
Petersenite-(Ce)raremineral · Mohs 3.5colorless, white, gray- No imagePetersite-(Ce)raremineral · Mohs 3-4yellow, brown, greenish
- No imagePetersite-(La)raremineral · Mohs 3-4blue, blue-green, green
- No imagePetersite-(Y)raremineral · Mohs 3-4yellow, brown, greenish-yellow
- No imagePetewilliamsiteraremineral · Mohs 3.5green, blue-green
Petitjeaniteraremineral · Mohs 4-5yellow, yellowish-white, colorless
Petoskey Stonescommonfossil · Mohs 3-4gray, brown, tan- No imagePetrukiteraremineral · Mohs 4dark brown, black
- No imagePetscheckiteraremineral · Mohs 3-4black, brownish black
Petterditeraremineral · Mohs 3.5-4white, colorless, yellowish-white
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