# Mineral Hardness Color Transparency Crystal System Probability See More
1Andalusite6.5 - 7.5Pink to red brown, occasionally yellow, green, white, gray rarely violetTransparent, TranslucentOrthorhombic0.047
2Almandine7.0 - 7.5Deep red, brownish red, red-violet, blackTransparent, TranslucentIsometric0.035
3Kaolinite2.0 - 2.5White to cream and pale-yellow, also often stained various hues, tans and browns being common.Translucent, OpaqueTriclinic0.03
4Leucite5.5 - 6.0White, greyTransparent, TranslucentTetragonal0.027
5Montmorillonite1.0 - 2.0White, buff, yellow, green, rarely pale pink to redTranslucentMonoclinic0.024
6Chrysoberyl8.5Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blueTransparent, TranslucentOrthorhombic0.023
7Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.019
8Ilmenite5.0 - 6.0Iron black or blackOpaqueTrigonal0.017
9Magnesite3.5 - 4.5Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light.Transparent, TranslucentTrigonal0.015
11Anapaite3.5Green, greenish-white, milky white, colorless, colourless to light green in transmitted light.TransparentTriclinic0.01
12Eucryptite6.5Colorless, white, pale tan, pale gray.Transparent, TranslucentTrigonal0.01
13Sepiolite2.0White, light gray or light yellow.Translucent, OpaqueOrthorhombic0.009
14Mellite2.0 - 2.5Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light.Transparent, TranslucentTetragonal0.009
15Muscovite2.5White to colorless, silvery-white, and tinged various colors by impurities.Transparent, TranslucentMonoclinic0.009
16Analcime5.0 - 5.5White, colourless, gray, pink, greenish, yellowishTransparent, TranslucentTriclinic0.008
17Opal5.5 - 6.5Colourless, white, yellow, red, orange, green, brown, black, blueTransparent, Translucent0.008
18Gadolinite-(Y)6.5 - 7.0Black, greenish-black, brownOpaqueMonoclinic0.008
19Chondrodite6.0 - 6.5Yellow, Red or Brown.Transparent, TranslucentMonoclinic0.008
20Staurolite7.0 - 7.5Dark brown, brownish-black, red-brownTranslucentMonoclinic0.007
21Berthierite2.0 - 3.0Dark steel-grey, often with iridescent tarnish.OpaqueOrthorhombic0.007
22Tantalite-(Mn)6.0Pink to nearly colourless, reddish brown to blackOpaqueOrthorhombic0.007
23Titanite5.0 - 5.5Colourless, brown, green, yellow, rose-red or black.Transparent, TranslucentMonoclinic0.007
24Sodalite5.5 - 6.0All ColoursTransparent, TranslucentIsometric0.007
25Microcline6.0 - 6.5White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green.Transparent, TranslucentTriclinic0.007
26Howlite3.5 - 6.5White, colorless, brownTransparentMonoclinic0.006
28Hydroxylherderite5.0 - 5.5Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light.Transparent, TranslucentMonoclinic0.006
29Magnetite5.5 - 6.5Greyish black or iron blackOpaqueIsometric0.005
30Parapierrotite2.5 - 3.0BlackOpaqueMonoclinic0.005
31Sylvanite1.5 - 2.0Grey, white, pale yellow silver-whiteOpaqueMonoclinic0.005
32Beryl7.5 - 8.0Colorless, green, blue, yellow, white, pink, etc.Hexagonal0.005
33Uraninite5.0 - 6.0Black, brownish-black, greyish, greenish, green-gray (thin fragments)OpaqueIsometric0.005
34Columbite-(Mn)6.0Black to brownish black, reddish brown in transmitted lightTransparent, Translucent, OpaqueOrthorhombic0.005
36Euxenite-(Y)5.5 - 6.5Black, greenish or brownish tint at timesOrthorhombic0.005
37Roselite3.5Rose-red, pink, rose coloured in transmitted light.Transparent, TranslucentMonoclinic0.004
38Bindheimite4.0 - 4.5Yellow, yellow-brown, brown, white, grey, greenish, colourless to yellow and brown in transmitted lightTranslucent, OpaqueIsometric0.004
39Monazite-(Ce)5.0 - 5.5Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light.TranslucentMonoclinic0.004
40Miserite5.5 - 6.0PinkTranslucentTriclinic0.004
41Carpathite1.5Yellow, yellowish brownTranslucentMonoclinic0.004
42Crandallite5.0Yellow, white, gray, colorless in transmitted light.Translucent, OpaqueTrigonal0.004
44Nontronite1.5 - 2.0Green, olive-green, yellow-green, yellow, orange, brownMonoclinic0.004
45Kermesite1.0 - 1.5RedTranslucent, OpaqueTriclinic0.004
46Chromite5.5BlackTranslucent, OpaqueIsometric0.004
47Phlogopite2.0 - 3.0Brown, gray, green, yellow, or reddish brownTransparent, TranslucentMonoclinic0.004
48Cobaltite5.5Reddish silver white, violet steel gray, or black.OpaqueOrthorhombic0.004
49Nacrite2.0 - 2.5White, grey, yellowish, brownish, etc.Monoclinic0.004
50Nickelskutterudite5.5 - 6.0Tin white - silver greyOpaqueIsometric0.004
51Gearksutite2.0white, colourless (including in transmitted light)Triclinic0.004
52Heterosite4.0 - 4.5Untreated mineral is usually Purple Black, also Deep rose to reddish purple, especially when treated in a strong acid solution.OpaqueOrthorhombic0.004
53Pyrope7.5Blood red, orange red, purple red, pink, black red, colorless.Isometric0.004
54Ferberite4.0 - 4.5Black, dark brown in transmitted lightOpaqueMonoclinic0.004
55Spinel7.5 - 8.0Black, blue, red, violet, green, brown, pinkTransparent, TranslucentIsometric0.003
56Cordierite7.0 - 7.5Grey, blue, blue-violet, greenish, yellowish brown, colourless to very light blue in transmitted light.Transparent, TranslucentOrthorhombic0.003
57Lollingite5.0 - 5.5Steel gray to silver white0.003
60Xonotlite6.5White, grey, pale pink, colorlessTransparent, TranslucentMonoclinic0.003
61Glauberite2.5 - 3.0Grey, yellowish, colourless, colourless in transmitted lightTransparent, TranslucentMonoclinic0.003
62Aerinite3.0blue to blue-greenTransparentMonoclinic0.003
63Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.003
64Sillimanite6.5 - 7.5Colorless, white, yellow, brown, green, gray.Transparent, TranslucentOrthorhombic0.003
65Kutnohorite3.5 - 4.0White, pale rose, pink, light to medium brownTranslucentTrigonal0.003
67Bismutite2.5 - 3.5Yellow to brown, greenish, green-grey, grey or black, colourless or tinted in shades of faint yellow, green, etc. in transmitted light.Transparent, TranslucentOrthorhombic0.003
68Tellurite2.0White to yellow, bright yellow to orange-yellow, nearly colourless in transmitted lightTransparentOrthorhombic0.003
69Ussingite6.0 - 7.0Pale to medium violet, reddish violet, sometimes barely tinted purpleTransparent, TranslucentTriclinic0.003
70Calcite3.0White, Yellow, Red, Orange, Blue, Green, Brown, Gray etc.Transparent, TranslucentTrigonal0.003
71Vesuvianite6.5Brown, yellow, brown-black, light green, emerald green, white, red, purple, violet, blue-green to blueTransparent, TranslucentTetragonal0.003
72Hydroxylapatite5.0White, grey, yellow, green, violet, purple, red or brownTransparent, Translucent, OpaqueHexagonal0.003
73Ulexite2.5Colourless, white, grey with included clays.TransparentTriclinic0.003
74Wavellite3.5 - 4.0Green to yellowish-green and yellow, greenish white, yellowish-brown, brown, brownish-black, blue, white and colourless, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.003
75Hydrozincite2.0 - 2.5White to grey, stained pale pink, or pale yellow or brown, colourless in transmitted light.Transparent, TranslucentMonoclinic0.003
76Roscherite4.5Brown, red, orange, greenish gray, yellowish green to brown in transmitted lightTransparent, TranslucentMonoclinic0.003
77Hydrocerussite3.5White or grey, colourless in transmitted lightTransparent, TranslucentTrigonal0.003
78Piemontite6.0 - 6.5Red, red-violet, red-brown to reddish blackTranslucent, OpaqueMonoclinic0.003
79Rhodonite5.5 - 6.5Red, pink, brownish-red, gray.Transparent, TranslucentTriclinic0.003
80Bismuth2.0 - 2.5Reddish-white to creamy-white, tarnishes iridescent pinkish, yellowish or bluishOpaqueTrigonal0.003
81Augite5.5 - 6.0Brown-green, black, green-black, brown, purplish brownTranslucent, OpaqueMonoclinic0.003
82Turquoise5.0 - 6.0bright blue, sky-blue, pale green, blue-green, turquoise-blue, apple-green, green-grayTransparent, Translucent, OpaqueTriclinic0.003
83Hydromagnesite3.5Colourless to white, colourless in transmitted lightTransparentMonoclinic0.003
84Zoisite6.0 - 7.0Colourless, purple, greyish-white, grey, yellowish-brown, yellow, pink, greenTransparent, TranslucentOrthorhombic0.003
85Scheelite4.5 - 5.0Tan, golden-yellow, colourless, white, greenish, dark brown, etc., colourless in transmitted lightTransparent, OpaqueTetragonal0.003
86Semseyite2.5Steel-grey to blackOpaqueMonoclinic0.003
88Polycrase-(Y)5.0 - 6.0BlackOrthorhombic0.003
89Nickeline5.0 - 5.5Pale copper redOpaqueHexagonal0.003
90Diamond10.0Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare)Transparent, Translucent, OpaqueIsometric0.003
91Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.003
92Arsenopyrite5.5 - 6.0Silver-white to steel-gray, may have a slight yellow appearanceOpaqueMonoclinic0.003
93Schorl7.0Bluish-black to black, sometimes brownish-black, rarely greenish-black.Translucent, OpaqueTrigonal0.003
94Baryte3.0Colourless, white, yellow, brown, grey, blue, etc., colourless in transmitted light (also tinted yellow, brown, green, blue, etc.)Transparent, Translucent, OpaqueOrthorhombic0.003
95Minium2.5Red, brownish-red, yellowish tint at times, red in transmitted light.TranslucentTetragonal0.003
96Cassiterite6.0 - 7.0Black, yellow, brown, red or white.Transparent, Translucent, OpaqueTetragonal0.003
97Anhydrite3.0 - 3.5Colourless, bluish, blue-grey, violet, burgundy-red, white, rose-pink, brownish, reddish, grey, dark grey, colourless in transmitted lightTransparent, TranslucentOrthorhombic0.003
98Hematite5.0 - 6.0Steel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material.OpaqueTrigonal0.002
99Narsarsukite7.0Yellow, yellowish-white, grayish-white, honey-yellow, tan, greenish-yellowTransparent, TranslucentTetragonal0.002
100Vesignieite3.0 - 4.0Yellow-green, dark olive-green0.002