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 841–960 of 1910 rocks (page 8 of 16).
- No imageJusiteraremineral · Mohs 3-4white, colorless
- No imageKainotropiteraremineral · Mohs 4dark green, black, olive green
Kaliboriteraremineral · Mohs 4.5white, colorless- No imageKalininiteraremineral · Mohs 3.5-4dark gray, black
- No imageKaliochalciteraremineral · Mohs 3.5yellow, yellowish-green, emerald-green
Kambaldaiteraremineral · Mohs 3.5yellow, pale yellow- No imageKameneviteraremineral · Mohs 3-4colorless, white, yellowish
- No imageKanoneroviteraremineral · Mohs 4.5colorless, white, pale yellow
- No imageKapustiniteraremineral · Mohs 3.5yellow, yellowish-orange, brown
- No imageKarasugiteraremineral · Mohs 3-4colorless, white
- No imageKarpinskiteraremineral · Mohs 3.5-4white, colorless, pale yellow
- No imageKasatkiniteraremineral · Mohs 3.5-4colorless, white, yellowish
Kashiniteraremineral · Mohs 3.5-4white, pale gray
Kasoliteraremineral · Mohs 4-5yellow, yellow-orange, brownish-yellow
Kassiteraremineral · Mohs 4colorless, white, yellowish
Kastningiteraremineral · Mohs 3.5pink, violet, reddish-pink- No imageKayrobertsoniteraremineral · Mohs 3.5yellow, pale yellow
Kazakoviteraremineral · Mohs 4pink, red, brown
Keckiteraremineral · Mohs 3-4yellowish-brown, brown- No imageKeiliteraremineral · Mohs 3.5-4black, brown
- No imageKeithconniteraremineral · Mohs 3.5-4bronze, white
Kelyaniteraremineral · Mohs 3.5yellow, yellow-orange
Kemmlitziteraremineral · Mohs 4.5yellow, brown, yellowish-brown
Kempiteraremineral · Mohs 3.5emerald-green, olive-green
Kenoargentotetrahedrite-(Fe)raremineral · Mohs 3-4iron-black, steel-gray
Kësteriteraremineral · Mohs 3.5brown, brownish-black, black
Keutschiteraremineral · Mohs 3-4gray, black
Keyiteraremineral · Mohs 3-4green, yellow-green
Khanneshiteraremineral · Mohs 3-4white, colorless, pale yellow- No imageKharaelakhiteraremineral · Mohs 3.5-4gray, brownish-gray
Khatyrkiteraremineral · Mohs 4silver-white, pale brass-yellow- No imageKhrenoviteraremineral · Mohs 4-5yellow, yellowish-brown
Khurayyimiteraremineral · Mohs 4colorless, white
Kiddcreekiteraremineral · Mohs 3.5pinkish-bronze, copper-red
Kidwelliteraremineral · Mohs 3.5yellow, yellow-green, brownish-yellow- No imageKieftiteraremineral · Mohs 3.5silver-white, gray
Kieseritecommonmineral · Mohs 3.5white, colorless, yellowish- No imageKihlmanite-(Ce)raremineral · Mohs 3.5-4yellowish-brown, brown, yellow
Kimberliteuncommonigneous · Mohs 3-5dark gray, bluish gray, greenish gray
Kimuraite-(Y)raremineral · Mohs 3.5pink, white, colorless- No imageKingsmountiteraremineral · Mohs 3-4white, colorless, pale yellow
- No imageKingstoniteraremineral · Mohs 3.5white, cream
Kintoreiteraremineral · Mohs 3.5-4yellow, brownish yellow, olive green
Kipushiteraremineral · Mohs 4green, blue-green, bluish-green- No imageKirchhoffiteraremineral · Mohs 4.5-5white, colorless
- No imageKitagohaiteraremineral · Mohs 3.5-4white, silver-white
Kitkaiteraremineral · Mohs 3.5white, gray
Kleemaniteraremineral · Mohs 3.5white, colorless, pale yellow
Kleiniteraremineral · Mohs 3.5yellow, pale yellow, orange-yellow- No imageKochiteraremineral · Mohs 3.5-4colorless, white
Kogarkoiteraremineral · Mohs 3.5colorless, white, pale yellow- No imageKojoneniteraremineral · Mohs 3.5-4pinkish-white
- No imageKoksharoviteraremineral · Mohs 4.5yellow, yellowish-brown
Kolbeckiteraremineral · Mohs 3.5-4apple-green, blue-green, yellowish-green- No imageKolskyiteraremineral · Mohs 3-4brown, yellowish-brown
Kolweziteraremineral · Mohs 3.5-4green, brownish-green, pinkish
Kolymiteraremineral · Mohs 3.5silvery white, gray
Komaroviteraremineral · Mohs 4-5yellow, brown, white
Komkoviteraremineral · Mohs 4-5colorless, yellow, brownish-yellow- No imageKonderiteraremineral · Mohs 4.5-5white, gray
Koninckiteraremineral · Mohs 3.5yellow, yellowish-white, colorless- No imageKononoviteraremineral · Mohs 3.5yellow, brownish-yellow
- No imageKoragoiteraremineral · Mohs 4-5yellow, brownish-yellow
- No imageKoryakiteraremineral · Mohs 3-4white, colorless
Korzhinskiteraremineral · Mohs 3.5white, colorless
Kosnariteraremineral · Mohs 3.5colorless, white, yellow
Koutekiteraremineral · Mohs 3.5white, silver-white, pinkish-white
Kovdorskiteraremineral · Mohs 3.5pale blue, colorless, white- No imageKozoite-(La)raremineral · Mohs 4-4.5white, colorless, pale pink
- No imageKozoite-(Nd)raremineral · Mohs 4-4.5white, colorless, pale pink
Kraissliteraremineral · Mohs 3-4yellow, brown, orange-brown
Krásnoiteraremineral · Mohs 4white, colorless
Krasnoviteraremineral · Mohs 3-4white, colorless- No imageKrauskopfiteraremineral · Mohs 3.5colorless, white
- No imageKrettnichiteraremineral · Mohs 3.5yellow, brownish-yellow
Kribergiteraremineral · Mohs 3.5white, colorless
Krieseliteraremineral · Mohs 3.5yellow, yellowish-white
Kristianseniteraremineral · Mohs 3.5colorless, white- No imageKrotiteraremineral · Mohs 3.5colorless
Krupkaiteraremineral · Mohs 3.5lead-gray, steel-gray
Kruťaiteraremineral · Mohs 3.5gray, silver-white
Kryzhanovskiteraremineral · Mohs 3.5brownish-red, orange-brown, reddish-brown- No imageKuannersuite-(Ce)raremineral · Mohs 3.5-4yellow, brown, red-brown
- No imageKudryavtsevaiteraremineral · Mohs 3.5yellow, brownish-yellow
Kukharenkoite-(Ce)raremineral · Mohs 4.5yellow, yellowish-brown, brown- No imageKukharenkoite-(La)raremineral · Mohs 4.5yellowish-brown, brown, yellow
Kukisvumiteraremineral · Mohs 3-4white, colorless, pale yellow
Kuksiteraremineral · Mohs 3-4yellow, yellowish-green, colorless
Kulaniteraremineral · Mohs 4blue, blue-green, colorless- No imageKuliginiteraremineral · Mohs 3.5yellow, brownish-yellow
Kumtyubeiteraremineral · Mohs 3.5white, colorless- No imageKunatiteraremineral · Mohs 4yellow, brownish-yellow
- No imageKupčíkiteraremineral · Mohs 3-3.5black
Kupletskiteraremineral · Mohs 3-4dark brown, reddish-brown, black- No imageKuramiteraremineral · Mohs 3.5-4gray, blackish-gray
Kuranakhiteraremineral · Mohs 3.5black, brownish-black
Kurchatoviteraremineral · Mohs 4.5white, colorless, gray- No imageKurgantaiteraremineral · Mohs 3.5white, colorless, gray
Kusachiiteraremineral · Mohs 3-4black, dark brown
Kutinaiteraremineral · Mohs 3.5silver-white, pale brass-yellow
Kutnohoriteuncommonmineral · Mohs 3.5-4white, pink, brown
Kuznetsoviteraremineral · Mohs 3.5dark red, red-brown, orange-red
Kvanefjelditeraremineral · Mohs 3-4pink, brown, white
Kyanitecommonmineral · Mohs 4.5-7blue, colorless, white- No imageKyanite Bladescommonmineral · Mohs 4.5-7blue, white, gray
Lacroixiteraremineral · Mohs 4.5-5yellow, yellow-green, colorless- No imageLaforêtiteraremineral · Mohs 3.5gray, white
- No imageLakebogaiteraremineral · Mohs 3-4yellow, yellow-orange, brown
Lammeriteraremineral · Mohs 3.5green, yellowish-green
Landesiteraremineral · Mohs 3.5yellowish-brown, brown
Langbeiniteuncommonmineral · Mohs 3.5-4colorless, white, gray
Langhofiteraremineral · Mohs 3-4dark brown, black- No imageLapearlitecommonmineral · Mohs 3.5-4white, cream, yellowish
Lapieiteraremineral · Mohs 3-3.5steel-gray, black
Larimarraregemstone · Mohs 4.5-5blue, white, greenish-blue- No imageLasnieriteraremineral · Mohs 4blue, light blue
Laumontitecommonmineral · Mohs 4white, colorless, yellow
Laurioniteraremineral · Mohs 3-3.5colorless, white, yellowish- No imageLautariteraremineral · Mohs 3-3.5colorless, white, yellowish
- No imageLeadamalgamraremineral · Mohs 3.5silver-white
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