# Mineral Hardness Color Transparency Crystal System Probability See More
1Andalusite6.5 - 7.5Pink to red brown, occasionally yellow, green, white, gray rarely violetTransparent, TranslucentOrthorhombic0.122
2Digenite2.5 - 3.0Grey to greyish black, turning bluish on exposure to airOpaqueTrigonal0.087
3Ice1.5Colourless to white, pale blue to greenish blue in thick layersTransparent, TranslucentHexagonal0.07
4Tantalite-(Mn)6.0Pink to nearly colourless, reddish brown to blackOpaqueOrthorhombic0.022
5Euxenite-(Y)5.5 - 6.5Black, greenish or brownish tint at timesOrthorhombic0.019
6Columbite-(Mn)6.0Black to brownish black, reddish brown in transmitted lightTransparent, Translucent, OpaqueOrthorhombic0.014
7Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.014
8Rockbridgeite3.5 - 4.5Dark green, olive-green, brown, yellow-brown, greenish black, blackTranslucent, OpaqueOrthorhombic0.013
9Chrysotile2.5GreenMonoclinic0.011
10Pyrrhotite3.5 - 4.0Bronze brown, bronze red, or dark brownOpaqueMonoclinic0.01
11Bismuth2.0 - 2.5Reddish-white to creamy-white, tarnishes iridescent pinkish, yellowish or bluishOpaqueTrigonal0.01
12Corundum9.0Colourless, blue, red, pink, yellow, grey, golden-brownTransparent, Translucent, OpaqueTrigonal0.01
13Astrophyllite3.0Bronze-yellow, golden yellow, brown to reddish brown.Translucent, OpaqueTriclinic0.01
14Frondelite4.5Dark brown, ocher-yellow, red-brown, greenish black, greenish brown, black, rarely orangeTranslucentOrthorhombic0.01
15Chalcopyrite3.5 - 4.0Brass yellow, often with an iridescent tarnish.OpaqueTetragonal0.009
16Phlogopite2.0 - 3.0Brown, gray, green, yellow, or reddish brownTransparent, TranslucentMonoclinic0.009
17Fluornatromicrolite5.0GreenTransparentIsometric0.008
18Hibonite7.5 - 8.0Black to brownisk blackOpaqueHexagonal0.008
19Mitridatite2.5Greenish-yellow, olive green, brownish-green, etc.TranslucentMonoclinic0.008
20Almandine7.0 - 7.5Deep red, brownish red, red-violet, blackTransparent, TranslucentIsometric0.008
21Cubanite3.5Brass- to bronze-yellowOpaqueOrthorhombic0.007
22Anthophyllite5.5 - 6.0White, greenish grey, green, clove brown, or brownish greenTransparent, TranslucentOrthorhombic0.007
23Dravite7.0Pale brown to dark-brown to brownish-black, also dark-yellow, blue.Transparent, TranslucentTrigonal0.007
24Argentopyrite3.5 - 4.0Bronze-brown, tarnishing to lead-grey.OpaqueMonoclinic0.007
25Romanechite5.0 - 6.0Greyish black, black0.007
26Arsenic3.5Tin-white, tarnishing to dark grey or black.OpaqueTrigonal0.007
27Iranite3.0Triclinic0.006
28Chondrodite6.0 - 6.5Yellow, Red or Brown.Transparent, TranslucentMonoclinic0.006
29Hematite5.0 - 6.0Steel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material.OpaqueTrigonal0.006
30Wurtzite3.5 - 4.0Dark reddish-brown to black, orange-brownTranslucentHexagonal0.006
31Chiavennite3.0Pale orange-yellowMonoclinic0.006
32Magnesio-hastingsite5.0 - 6.0Green to brownish-greenMonoclinic0.006
33Bornite3.0Copper-red to pinchbeck-brown, quickly tarnishing to an iridescent purplish surface.OpaqueOrthorhombic0.006
34Augite5.5 - 6.0Brown-green, black, green-black, brown, purplish brownTranslucent, OpaqueMonoclinic0.006
35Samarskite-(Y)5.0 - 6.0Black internally, pale to yellow-brown surfaceMonoclinic0.005
36Spessartine6.5 - 7.5Red, reddish orange, yellowish brown, reddish brown, or brownTransparent, TranslucentIsometric0.005
37Cassiterite6.0 - 7.0Black, yellow, brown, red or white.Transparent, Translucent, OpaqueTetragonal0.005
38Cordierite7.0 - 7.5Grey, blue, blue-violet, greenish, yellowish brown, colourless to very light blue in transmitted light.Transparent, TranslucentOrthorhombic0.005
39Wavellite3.5 - 4.0Green to yellowish-green and yellow, greenish white, yellowish-brown, brown, brownish-black, blue, white and colourless, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.005
40Rutile6.0 - 6.5Blood red, brownish yellow, brown-red, yellow, greyish-black, black, brown, bluish or violetTransparentTetragonal0.005
41Goethite5.0 - 5.5brownish black, yellow-brown, reddish brownOpaqueOrthorhombic0.005
42Kaersutite5.0 - 6.0Dark brown to blackMonoclinic0.005
43Clinochlore2.0 - 2.5Green, yellowish green, olive green, blackish green, bluish green, white, pinkTransparent, TranslucentMonoclinic0.005
44Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.005
45Osumilite5.0 - 6.0BlueTransparent, TranslucentHexagonal0.004
46Davidite-(La)6.0BlackTrigonal0.004
47Columbite-(Fe)6.0Black to brownish blackOpaqueOrthorhombic0.004
48Uvarovite6.5 - 7.0Green, emerald-green, green-blackTransparent, TranslucentIsometric0.004
49Titanite5.0 - 5.5Colourless, brown, green, yellow, rose-red or black.Transparent, TranslucentMonoclinic0.004
50Opal5.5 - 6.5Colourless, white, yellow, red, orange, green, brown, black, blueTransparent, Translucent0.004
51Analcime5.0 - 5.5White, colourless, gray, pink, greenish, yellowishTransparent, TranslucentTriclinic0.004
52Staurolite7.0 - 7.5Dark brown, brownish-black, red-brownTranslucentMonoclinic0.004
53Lepidocrocite5.0Deep red, red-brownTransparentOrthorhombic0.004
54Ilmenite5.0 - 6.0Iron black or blackOpaqueTrigonal0.004
55Miargyrite2.5Black with dark red internal reflectionsMonoclinic0.004
56Lollingite5.0 - 5.5Steel gray to silver white0.004
57Sphalerite3.5 - 4.0Yellow, light to dark brown, black, red-brown, colourless, light blue. greenTransparent, TranslucentIsometric0.004
58Rammelsbergite5.5 - 6.0Tin white with faint pinkish hueOpaqueOrthorhombic0.003
59Marcasite6.0 - 6.5Pale brass-yellow, tin-white on fresh exposures.OpaqueOrthorhombic0.003
60Chrysoberyl8.5Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blueTransparent, TranslucentOrthorhombic0.003
61Dyscrasite3.5 - 4.0Silver WhiteOpaqueOrthorhombic0.003
62Colusite3.0 - 4.0Bronze, pinkish bronzeOpaqueIsometric0.003
63Allanite-(Ce)5.5 - 6.0Brown to blackTranslucent, OpaqueMonoclinic0.003
64Goldmanite6.0 - 7.0Green, brownish-greenTranslucentIsometric0.003
65Fluoro-richterite5.0 - 6.0Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.Monoclinic0.003
66Stibarsen3.0 - 4.0White, reddish gray, tarnishes grayOpaqueTrigonal0.003
67Clinozoisite7.0colourless, green, grey, light green, yellow-green, pinkTransparent, TranslucentMonoclinic0.003
68Actinolite5.0 - 6.0Green, green-black, grey-green, or blackTransparent, TranslucentMonoclinic0.003
69Muscovite2.5White to colorless, silvery-white, and tinged various colors by impurities.Transparent, TranslucentMonoclinic0.003
70Epidote6.0Yellowish-green, green, brownish-green, blackTransparent, Translucent, OpaqueMonoclinic0.003
71Gadolinite-(Y)6.5 - 7.0Black, greenish-black, brownOpaqueMonoclinic0.003
72Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.003
73Bournonite2.5 - 3.0Steel-grayOpaqueOrthorhombic0.003
74Beryl7.5 - 8.0Colorless, green, blue, yellow, white, pink, etc.Hexagonal0.003
75Pyrolusite2.0 - 6.5Black or very dark grey.OpaqueTetragonal0.003
76Ramsdellite3.0black, steel-greyOpaqueOrthorhombic0.003
77Heterosite4.0 - 4.5Untreated mineral is usually Purple Black, also Deep rose to reddish purple, especially when treated in a strong acid solution.OpaqueOrthorhombic0.003
78Grossular6.5 - 7.0Brown, orange, red, yellow, green, white, colorlessTransparent, TranslucentIsometric0.002
79Schorl7.0Bluish-black to black, sometimes brownish-black, rarely greenish-black.Translucent, OpaqueTrigonal0.002
80Andradite6.5 - 7.0Yellow, greenish yellow to emerald-green, dark green, brown, brownish red, brownish yellow, grayish black, black, may be sectoredTransparent, TranslucentIsometric0.002
81Groutite3.5 - 4.0Black, may be iridescentOpaqueOrthorhombic0.002
82Phenakite7.5 - 8.0Colourless, white, yellow, pale roseTransparentTrigonal0.002
83Chamosite3.0Green, grey-green, blackMonoclinic0.002
84Fluorophlogopite2.0 - 3.0Pale yellow0.002
85Variscite3.5 - 4.5Pale to emerald-green, bluish green, colourless to white, pale shades of brown or yellow, rarely red, Colourless to pale green in transmitted light.Transparent, TranslucentOrthorhombic0.002
86Clintonite3.5 - 6.0Brown, golden brown, reddish brown, yellow green, dark greenTransparent, TranslucentMonoclinic0.002
87Cafarsite5.5 - 6.0Dark brownOpaqueIsometric0.002
88Hanksite3.0 - 3.5Colourless to grey, yellow or almost black, colourless in transmitted light.Transparent, TranslucentHexagonal0.002
89Riebeckite5.0 - 5.5Usually black, also commonly light blue to blue-black, gray-blue, gray, brownTranslucent, OpaqueMonoclinic0.002
90Melonite1.0 - 1.5Trigonal0.002
91Phosgenite2.0 - 3.0Colourless, white, yellow, brown, greenish or pink, colourless in transmitted light.Transparent, TranslucentTetragonal0.002
92Cosalite2.5 - 3.0GreyOpaqueOrthorhombic0.002
93Franklinite5.5 - 6.0BlackOpaqueIsometric0.002
94Stannite4.0Grey, black with an olive-green tint, tarnishes pale blueOpaqueTetragonal0.002
95Tephroite6.0Grey, olive-green, flesh red or reddish-brown, dark brown.TranslucentOrthorhombic0.002
96Johannsenite6.0blue-green, grey-white, dark brown, colourlessMonoclinic0.002
97Beraunite3.0 - 4.0Dark greenish-brown, green, grading to grayTransparent, TranslucentMonoclinic0.002
98Lithiophilite4.0Reddish-brown, yellowish brown, golden-yellow, salmon-orange, colourless to light yellow, pink in transmitted light.Transparent, TranslucentOrthorhombic0.002
99Stibnite2.0Lead-gray with pale blue tintOpaqueOrthorhombic0.002
100Annite2.5 - 3.0Black, brownTransparent, TranslucentMonoclinic0.002