# Mineral Hardness Color Transparency Crystal System Probability See More
1Kaolinite2.0 - 2.5White to cream and pale-yellow, also often stained various hues, tans and browns being common.Translucent, OpaqueTriclinic0.232
2Leucite5.5 - 6.0White, greyTransparent, TranslucentTetragonal0.192
3Sepiolite2.0White, light gray or light yellow.Translucent, OpaqueOrthorhombic0.069
4Diamond10.0Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare)Transparent, Translucent, OpaqueIsometric0.019
5Beaverite-(Cu)3.5 - 4.5YellowTrigonal0.015
6Gyrolite2.5Brown, Colorless, White, GreenTransparent, TranslucentTriclinic0.015
7Ulexite2.5Colourless, white, grey with included clays.TransparentTriclinic0.015
8Alunite3.5 - 4.0white, pale shades of gray, yellow, red, to reddish brownTransparent, TranslucentTrigonal0.014
9Palygorskite2.0 - 2.5White. grayish, yellowish, gray-greenTranslucentMonoclinic0.014
10Sanidine6.0Colourless, white, grey, yellowish white, or reddish whiteTransparent, TranslucentMonoclinic0.014
11Pyrope7.5Blood red, orange red, purple red, pink, black red, colorless.Isometric0.013
12Hydrotalcite2.0White, brownishTransparentTrigonal0.011
13Petalite6.5Colourless, white, grey, pinkTransparent, TranslucentMonoclinic0.01
14Talc1.0Colorless, white, pale green, bright emerald-green to dark green, brown, grayTransparent, TranslucentTriclinic0.008
15Glauberite2.5 - 3.0Grey, yellowish, colourless, colourless in transmitted lightTransparent, TranslucentMonoclinic0.008
16Fluorophlogopite2.0 - 3.0Pale yellow0.007
17Montmorillonite1.0 - 2.0White, buff, yellow, green, rarely pale pink to redTranslucentMonoclinic0.007
18Brucite2.5 - 3.0White, light greenish, grayish, bluish, honey-yellow, brownish red deep brown (manganoan varieties)Transparent, TranslucentTrigonal0.006
19Montebrasite5.5 - 6.0White, colorless, gray white, very pale brown, pale pink, pale yellowTransparent, TranslucentTriclinic0.006
20Gearksutite2.0white, colourless (including in transmitted light)Triclinic0.006
21Hanksite3.0 - 3.5Colourless to grey, yellow or almost black, colourless in transmitted light.Transparent, TranslucentHexagonal0.006
22Anorthite6.0 - 6.5Colourless, reddish grey, whiteTransparent, TranslucentTriclinic0.006
23Tremolite5.0 - 6.0White, brown, colourless, grey, light green, green, light yellow, pink-violetTransparent, TranslucentMonoclinic0.006
24Sillimanite6.5 - 7.5Colorless, white, yellow, brown, green, gray.Transparent, TranslucentOrthorhombic0.005
25Wollastonite4.5 - 5.0White, gray-white, light green, pinkish, brown, red, yellowTransparent, TranslucentTriclinic0.005
26Nordstrandite3.0colorless, coral pink and reddish brownTransparent, OpaqueTriclinic0.005
27Messelite3.5White, pale gray white, creamy whiteTransparent, TranslucentTriclinic0.004
28Spodumene6.5 - 7.0Colourless, yellow, light green, emerald-green, pink to violet, purple, white, grayTransparent, TranslucentMonoclinic0.004
29Sassolite1.0White to grey, occasionally colourless, yellow or brown.TransparentTriclinic0.004
30Topaz8.0Colourless, white, pale blue, light green, yellow, yellowish brown, or redTransparent, TranslucentOrthorhombic0.004
31Carnotite2.0Bright yellow, yellow, greenish yellowTranslucentMonoclinic0.004
32Thorite4.5Yellow, yellow-brown, red-brown, green, orange to blackOpaqueTetragonal0.004
33Howlite3.5 - 6.5White, colorless, brownTransparentMonoclinic0.004
34Microcline6.0 - 6.5White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green.Transparent, TranslucentTriclinic0.004
35Hydroxylapatite5.0White, grey, yellow, green, violet, purple, red or brownTransparent, Translucent, OpaqueHexagonal0.004
36Nontronite1.5 - 2.0Green, olive-green, yellow-green, yellow, orange, brownMonoclinic0.004
37Pollucite6.5Almost always colorless or white, also light gray, light pink, light blue, pale violetTransparent, TranslucentIsometric0.003
38Cookeite2.5 - 3.5White, yellowish green, pink, brownTranslucentMonoclinic0.003
39Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.003
40Magnesite3.5 - 4.5Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light.Transparent, TranslucentTrigonal0.003
41Saponite1.5 - 2.0White, gray-green, bluish, yellowMonoclinic0.003
42Norbergite6.0 - 6.5Orange-yellow, yellow, orange to brown.Transparent, TranslucentOrthorhombic0.003
43Sylvite1.5 - 2.0Colourless, grey, white, yellowish to reddish, seldom blue or violetTransparent, TranslucentIsometric0.003
44Alumohydrocalcite2.5Chalky white to pale blue, pale yellow, cream, gray, pale rose or brownish pink to dark violet in chromian varietiesTransparent, Translucent, OpaqueTriclinic0.003
45Berthierite2.0 - 3.0Dark steel-grey, often with iridescent tarnish.OpaqueOrthorhombic0.003
46Fluoborite3.5Colourless, violet or white, colourless in transmitted lightTransparent, TranslucentHexagonal0.003
47Lizardite2.00.003
48Corundum9.0Colourless, blue, red, pink, yellow, grey, golden-brownTransparent, Translucent, OpaqueTrigonal0.002
49Witherite3.0 - 3.5Colourless, white, greyish, light yellow, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.002
50Eucryptite6.5Colorless, white, pale tan, pale gray.Transparent, TranslucentTrigonal0.002
51Kleinite3.5Light to canary-yellow, orange, darkens to reddish yellow or orange in daylight and reverts to original color in darkness. Yellow to colourless in transmitted light.Transparent, TranslucentHexagonal0.002
52Parisite-(Ce)4.5Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light.Transparent, TranslucentMonoclinic0.002
53Marialite5.5 - 6.0Bluish, Brownish, Colorless, Violet, GreenishTransparent, TranslucentTetragonal0.002
54Thortveitite6.0 - 7.0Greyish-green, black, grey, blue, yellow, brownTranslucent, OpaqueMonoclinic0.002
55Bikitaite6.0Colorless, WhiteTransparent, TranslucentTriclinic0.002
56Hauerite4.0Reddish-brown/blackOpaqueIsometric0.002
57Whewellite2.5 - 3.0White, yellow, brown, colourless, colourless in transmitted light.Transparent, TranslucentMonoclinic0.002
58Hydroboracite2.0Colourless, whiteTransparentMonoclinic0.002
59Beryl7.5 - 8.0Colorless, green, blue, yellow, white, pink, etc.Hexagonal0.002
60Tetrawickmanite3.5 - 4.5Honey-yellow, brown-orangeTransparent, TranslucentTetragonal0.002
61Calcite3.0White, Yellow, Red, Orange, Blue, Green, Brown, Gray etc.Transparent, TranslucentTrigonal0.002
62Zektzerite6.0Colourless, pink (often zoned)Orthorhombic0.002
63Margarosanite2.5 - 3.0Colorless, grayish-white (due to included native lead)Transparent, TranslucentTriclinic0.002
64Probertite3.5Colourless, colourless in transmitted lightTransparentMonoclinic0.002
65Albite6.0 - 6.5White to grey, bluish, greenish, reddishTransparent, TranslucentTriclinic0.002
66Zircon7.5Colourless, yellow, grey, reddish-brown, green, brown, blackTransparent, Translucent, OpaqueTetragonal0.002
67Gypsum2.0Colourless to white, often tinged other hues due to impurities, colourless in transmitted light..Transparent, Translucent, OpaqueMonoclinic0.002
68Bindheimite4.0 - 4.5Yellow, yellow-brown, brown, white, grey, greenish, colourless to yellow and brown in transmitted lightTranslucent, OpaqueIsometric0.002
69Tacharanite5.0WhiteTranslucentMonoclinic0.002
70Plumbojarosite1.5 - 2.0Golden-brown to dark-brown, dark brown-red, blackishTranslucent, OpaqueTrigonal0.002
71Turquoise5.0 - 6.0bright blue, sky-blue, pale green, blue-green, turquoise-blue, apple-green, green-grayTransparent, Translucent, OpaqueTriclinic0.002
72Danburite7.0 - 7.5Pale yellow, yellowish-brown, colourlessTransparent, TranslucentOrthorhombic0.002
73Pyroaurite2.5Yellow to brownish-white, white, gray, silver-white, greenish or colourlessTransparentTrigonal0.001
74Hydroxylherderite5.0 - 5.5Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light.Transparent, TranslucentMonoclinic0.001
75Tyuyamunite1.5 - 2.0Canary yellow, lemon-yellow, greenish yellow (upon exposure to sunlight), colourless to pale yellow in transmitted light.Translucent, OpaqueOrthorhombic0.001
76Eulytine4.5Orange, orange brown to red brown, bright lime green, colorlessTransparentIsometric0.001
77Crandallite5.0Yellow, white, gray, colorless in transmitted light.Translucent, OpaqueTrigonal0.001
78Humboldtine1.5 - 2.0Yellow to amber-yellowTransparent, TranslucentMonoclinic0.001
79Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.001
80Fairfieldite3.5White, greenish white, light amber, salmon-yellow, colourless in transmitted light.Transparent, TranslucentTriclinic0.001
81Zunyite7.0Colourless, grey, white, flesh-redTransparent, TranslucentIsometric0.001
82Bavenite5.5WhiteOrthorhombic0.001
83Poughite5.0Yellow, brownish yellow, greenish yellowOrthorhombic0.001
84Gageite3.0Usually brownish purple, brown, pinkish brown, light pink, light brown, also colorless in small crystalsTransparent, TranslucentMonoclinic0.001
85Muscovite2.5White to colorless, silvery-white, and tinged various colors by impurities.Transparent, TranslucentMonoclinic0.001
86Hedyphane4.0 - 5.0White, yellowish white, buff, bluish, colourless in transmitted light.Hexagonal0.001
87Sellaite5.0 - 5.5Colourless, white, colourless in transmitted light.TransparentTetragonal0.001
88Sodalite5.5 - 6.0All ColoursTransparent, TranslucentIsometric0.001
89Datolite5.0 - 5.5White, greyish, pale green, red, yellow, pink, etc.Transparent, Translucent, OpaqueMonoclinic0.001
90Thorianite6.5 - 7.0Dark grey, brown-blackIsometric0.001
91Zinkenite3.0 - 3.5Steel-greyOpaqueHexagonal0.001
92Miserite5.5 - 6.0PinkTranslucentTriclinic0.001
93Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.001
94Gold2.5 - 3.0Rich yellow, paling to whitish-yellow with increasing silver, blue & green in transmitted light (only thinnest folia [gold leaf])OpaqueIsometric0.001
95Opal5.5 - 6.5Colourless, white, yellow, red, orange, green, brown, black, blueTransparent, Translucent0.001
96Terskite5.0White, pale lilac to violetOrthorhombic0.001
97Artinite2.5White, colourless in transmitted light.TransparentMonoclinic0.001
98Hydrozincite2.0 - 2.5White to grey, stained pale pink, or pale yellow or brown, colourless in transmitted light.Transparent, TranslucentMonoclinic0.001
99Pargasite5.0 - 6.0Light-brown, brown, greenish-brown to dark green and black.Monoclinic0.001
100Bityite5.5White yellowish, colorless, white, brownishTransparent, TranslucentMonoclinic0.001