Mohs hardness 6 rocks & minerals
Mohs hardness 6 is orthoclase feldspar — the boundary where a steel knife stops working as a scratch tool. Glass usually gives way.
Showing 961–1080 of 1497 rocks (page 9 of 13).
Neltneriteraremineral · Mohs 6black, brownish-black
Nephelinecommonmineral · Mohs 5.5-6white, gray, yellowish
Nepheline Syenitecommonigneous · Mohs 5.5-6gray, white, pink
Nephritecommonmineral · Mohs 6-6.5green, white, yellow
Nephrite Jadecommonmineral · Mohs 6-6.5green, white, yellow
Neptuniteraremineral · Mohs 5-6black, deep red
Nežiloviteraremineral · Mohs 6black, brown
Nickelineuncommonmineral · Mohs 5-5.5pale copper-red, light bronze
Nickelphosphideraremineral · Mohs 5-6white, silver-white, yellowish-white
Nickelskutteruditeuncommonmineral · Mohs 5.5-6tin-white, silver-white, gray- No imageNiigataiteraremineral · Mohs 6-7pink, reddish-pink
- No imageNikmelnikoviteraremineral · Mohs 6.5-7dark brown, black
Niocaliteraremineral · Mohs 6yellow, yellow-orange, amber
Nisbiteraremineral · Mohs 5-6white, tin-white, gray- No imageNodules Filled With Opalcommonfossil · Mohs 5.5-6.5white, gray, brown
- No imageNoelbensoniteraremineral · Mohs 5-6dark brown, black
- No imageNoonkanbahiteraremineral · Mohs 5.5yellow, yellow-brown
Norbergiteraremineral · Mohs 6-6.5yellow, orange, brown
Nordenskiöldineraremineral · Mohs 5-6yellow, brown, white- No imageNordite-(Ce)raremineral · Mohs 5-5.5yellow, brown, colorless
- No imageNordite-(La)raremineral · Mohs 5-5.5colorless, white, pale yellow
Normanditeraremineral · Mohs 5-6yellow, brown, reddish-brown
Noseanuncommonmineral · Mohs 5-5.5gray, blue, white
Nsutiteuncommonmineral · Mohs 6-6.5dark gray, black
Numanoiteraremineral · Mohs 5-5.5colorless, white
Number 8 Turquoiseraremineral · Mohs 5-6blue, green, spiderweb matrix
Nuummiteuncommonmetamorphic · Mohs 5.5-6black, dark gray
Nybøiteraremineral · Mohs 5-6blue, blue-green, violet-blue
Obsidiancommonigneous · Mohs 5-6black, dark green, mahogany- No imageObsidian Nodulescommonmineral · Mohs 5-5.5black, brown, gray
- No imageOchoco Jaspercommonfossil · Mohs 6.5-7red, orange, brown
- No imageOdigitriaiteraremineral · Mohs 5-6white, colorless
Okhotskiteraremineral · Mohs 5-6red, brownish-red- No imageOkieitecommonmineral · Mohs 6.5-7yellow, brown, orange
Oligoclasecommonmineral · Mohs 6-6.5white, colorless, gray
Olivinecommonmineral · Mohs 6.5-7olive green, yellow-green, brownish green
Omphaciteuncommonmineral · Mohs 5-6green, dark green, blackish-green
Onyxcommonmineral · Mohs 6.5-7black, white, banded- No imageOolitic Agatescommonmineral · Mohs 6.5-7white, gray, brown
Opalcommonmineral · Mohs 5.5-6.5white, black, colorless- No imageOpal-quartzcommonmineral · Mohs 6.5-7white, gray, brown
Opalitecommonmineral · Mohs 5.5-6.5white, blue, milky
Opalized Woodcommonfossil · Mohs 5.5-6.5brown, red, yellow- No imageOrange Agatecommonmineral · Mohs 6.5-7orange, red-orange, yellow-orange
Orbicular Jaspercommonmineral · Mohs 6.5-7green, yellow, brown
Ordoñeziteraremineral · Mohs 6-6.5yellowish brown, brown, dark brown
Örebroiteraremineral · Mohs 5-6black, brownish-black
Oregon Jadecommonmineral · Mohs 6.5-7green, olive-green, dark green
Oregon Sunstoneuncommongemstone · Mohs 6-6.5yellow, red, green
Orthoclasecommonmineral · Mohs 6white, colorless, flesh-red- No imageOrthogersdorffiteraremineral · Mohs 5.5-6white, steel-gray, silver-white
- No imageOrthojoaquinite-(Ce)raremineral · Mohs 5-5.5brown, yellowish-brown, orange-brown
- No imageOrthojoaquinite-(La)raremineral · Mohs 5-5.5yellow, brown, orange-brown
Orthopinakioliteraremineral · Mohs 6black, brownish-black- No imageOsarsiteraremineral · Mohs 6lead-gray, silver-white
Osumiliteraremineral · Mohs 5-5.5blue, blue-violet, colorless
Ottreliteuncommonmineral · Mohs 6.5dark green, black, gray-green
Ottréliteuncommonmineral · Mohs 6.5dark gray, dark green, black- No imageOwyhee Jaspercommonmineral · Mohs 6.5-7blue, brown, cream
- No imageOwyhee Thundereggcommonmineral · Mohs 6.5-7blue, purple, white
Oxo-magnesio-hastingsiteraremineral · Mohs 5-6black, dark green, brown- No imageOxo-mangani-leakeiteraremineral · Mohs 6dark blue, dark violet
- No imageOxycalciomicroliteraremineral · Mohs 5-5.5yellow, brown, reddish-brown
Oxycalciopyrochloreraremineral · Mohs 5-5.5brown, yellowish-brown, black
Oxycalcioroméiteraremineral · Mohs 5-5.5yellow, brown, yellow-brown- No imageOxynatromicroliteraremineral · Mohs 5-5.5yellow, brown, colorless
- No imageOxyplumbopyrochloreraremineral · Mohs 5-5.5yellow, brown, reddish-brown
Oxyplumboroméiteraremineral · Mohs 5-5.5yellow, brown, colorless- No imageOxystannomicroliteraremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageOxystibiomicroliteraremineral · Mohs 5-5.5yellow, brown, white
- No imageOxyvaniteraremineral · Mohs 5.5-6black, brownish black
Pabstiteraremineral · Mohs 6white, colorless, gray
Palenzonaiteraremineral · Mohs 6-6.5orange, reddish-orange
Palermoiteraremineral · Mohs 5.5colorless, white, pale yellow- No imagePalladosilicideraremineral · Mohs 5-5.5silver-white, gray
Pallasiterareigneous · Mohs 5-6yellow, green, brown
Panunziteraremineral · Mohs 6colorless, white
Papikeiteraremineral · Mohs 5-6black, dark brown- No imageParaberzeliiteraremineral · Mohs 5-6yellow, yellowish-brown
Paracelsianraremineral · Mohs 6colorless, white, gray- No imageParagersdorffiteraremineral · Mohs 5.5silver-white, steel-gray, lead-gray
Parakeldyshiteraremineral · Mohs 5.5colorless, white, pinkish- No imageParalabuntsovite-Mgraremineral · Mohs 5-6yellow, orange, brown
Paraumbiteraremineral · Mohs 5-6colorless, white, yellow
Pargasiteuncommonmineral · Mohs 5-6dark green, brown, black
Parweliteraremineral · Mohs 5-6brownish-red, orange-red- No imagePaseroiteraremineral · Mohs 5-6dark brown, black
- No imagePaulscherreriteraremineral · Mohs 5-6brown, yellow-brown, black
- No imagePavlovskyiteraremineral · Mohs 6colorless, white, pale yellow
Pegmatitecommonigneous · Mohs 6-7white, gray, pink- No imagePekoviteraremineral · Mohs 5-6colorless, white
Pellyiteraremineral · Mohs 6yellow, pale yellow, brown- No imagePerbøeite-(Ce)raremineral · Mohs 6-7dark brown, black
- No imagePerbøeite-(La)raremineral · Mohs 6-7black, dark brown
- No imagePercleveite-(Ce)raremineral · Mohs 5-6brown, reddish-brown
Perettiite-(Y)raremineral · Mohs 6-7dark brown, black
Periclaseraremineral · Mohs 5.5-6colorless, white, yellow
Peridotcommongemstone · Mohs 6.5-7olive-green, yellow-green, lime-green
Peridotitecommonigneous · Mohs 6-7dark green, olive green, yellow-green
Perlitecommonigneous · Mohs 5-5.5gray, white, greenish
Perovskiteuncommonmineral · Mohs 5.5black, brown, yellow
Perrierite-(Ce)raremineral · Mohs 5.5black, dark brown, reddish brown
Perrierite-(La)raremineral · Mohs 5-6black, dark brown, reddish brown
Perthitecommonmineral · Mohs 6white, gray, pink- No imagePertsevite-(F)raremineral · Mohs 5-6brown, colorless, gray
- No imagePertsevite-(OH)raremineral · Mohs 5-6colorless, white
- No imagePeruvian Blue Opaluncommongemstone · Mohs 5.5-6.5blue, teal, blue-green
Petaliteuncommonmineral · Mohs 6-6.5colorless, white, gray
Petedunniteraremineral · Mohs 5-6dark green, yellow-green
Petříčekiteraremineral · Mohs 5-6silver-white, tin-white
Petrified Algaecommonfossil · Mohs 6.5-7tan, brown, gray- No imagePetrified Coralcommonfossil · Mohs 6.5-7white, gray, brown
Petrified Cycaduncommonfossil · Mohs 6.5-7brown, tan, black
Petrified Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, yellow
Petrified Palmcommonfossil · Mohs 6.5-7brown, tan, black
Petrified Palm Woodcommonfossil · Mohs 6.5-7tan, brown, black
Petrified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Philippinitecommonmineral · Mohs 5.5-6.5black, dark brown- No imagePhosphoellenbergeriteraremineral · Mohs 5.5colorless, pale pink
Picture Jaspercommonmineral · Mohs 6.5-7brown, tan, cream
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