# Mineral Hardness Color Transparency Crystal System Probability See More
1Whewellite2.5 - 3.0White, yellow, brown, colourless, colourless in transmitted light.Transparent, TranslucentMonoclinic0.103
2Diamond10.0Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare)Transparent, Translucent, OpaqueIsometric0.037
3Leucophanite4.0Pale yellow, greenish white, yellowish green, colourlessTransparent, TranslucentOrthorhombic0.034
4Zektzerite6.0Colourless, pink (often zoned)Orthorhombic0.029
5Topaz8.0Colourless, white, pale blue, light green, yellow, yellowish brown, or redTransparent, TranslucentOrthorhombic0.027
6Boracite7.0 - 7.5Green, blue, colourless, grey, white, dark green (ferroan), colourless in transmitted lightTransparent, TranslucentOrthorhombic0.026
7Gearksutite2.0white, colourless (including in transmitted light)Triclinic0.024
8Mellite2.0 - 2.5Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light.Transparent, TranslucentTetragonal0.023
9Benitoite6.0 - 6.5Sapphire blue, white to colorless, pinkTransparent, TranslucentHexagonal0.021
10Sanidine6.0Colourless, white, grey, yellowish white, or reddish whiteTransparent, TranslucentMonoclinic0.02
11Phenakite7.5 - 8.0Colourless, white, yellow, pale roseTransparentTrigonal0.019
12Barrerite3.0 - 4.0White, PinkTransparent, TranslucentOrthorhombic0.018
13Gismondine4.0 - 5.0Colorless to white, very pale pink.Monoclinic0.018
14Durangite5.5Light to dark orange-red, red, green, orange-yellow in artificial light.TranslucentMonoclinic0.018
15Spinel7.5 - 8.0Black, blue, red, violet, green, brown, pinkTransparent, TranslucentIsometric0.017
16Kurnakovite2.5 - 3.0White, colourless in transmitted lightTransparent, TranslucentTriclinic0.015
17Glauberite2.5 - 3.0Grey, yellowish, colourless, colourless in transmitted lightTransparent, TranslucentMonoclinic0.013
18Nacrite2.0 - 2.5White, grey, yellowish, brownish, etc.Monoclinic0.013
19Iron4.5Iron-blackOpaqueIsometric0.012
20Cryolite2.5Colourless, white, brown, grey, black, colourless in transmitted light.Transparent, TranslucentMonoclinic0.009
21Senarmontite2.0 - 2.5Colourless to grayTransparent, TranslucentIsometric0.009
22Sylvite1.5 - 2.0Colourless, grey, white, yellowish to reddish, seldom blue or violetTransparent, TranslucentIsometric0.008
23Pezzottaite8.0raspberry red to pink0.008
24Arsenolite1.5White, bluish, reddish to yellowish if impure with realgar or orpiment, colourless in transmitted lightTransparentIsometric0.008
25Chabazite-Ca4.0 - 5.0Colourless, white, yellow, pink, redTransparent, TranslucentTriclinic0.008
26Baryte3.0Colourless, white, yellow, brown, grey, blue, etc., colourless in transmitted light (also tinted yellow, brown, green, blue, etc.)Transparent, Translucent, OpaqueOrthorhombic0.008
27Nifontovite3.5ColorlessTransparentMonoclinic0.008
28Chrysoberyl8.5Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blueTransparent, TranslucentOrthorhombic0.007
29Alunite3.5 - 4.0white, pale shades of gray, yellow, red, to reddish brownTransparent, TranslucentTrigonal0.007
30Celestine3.0 - 3.5Colourless, shades of light blue, white, reddish, greenish, brownish, greyish, colourless or lightly tinted in transmitted lightTransparent, TranslucentOrthorhombic0.007
31Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.007
32Hanksite3.0 - 3.5Colourless to grey, yellow or almost black, colourless in transmitted light.Transparent, TranslucentHexagonal0.006
33Fluorapophyllite-(K)4.5 - 5.0Colourless, pale green, aquamarine, white, pink, yellowTransparent, TranslucentTetragonal0.006
34Hydroxylherderite5.0 - 5.5Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light.Transparent, TranslucentMonoclinic0.006
35Danburite7.0 - 7.5Pale yellow, yellowish-brown, colourlessTransparent, TranslucentOrthorhombic0.006
36Kaolinite2.0 - 2.5White to cream and pale-yellow, also often stained various hues, tans and browns being common.Translucent, OpaqueTriclinic0.006
37Montebrasite5.5 - 6.0White, colorless, gray white, very pale brown, pale pink, pale yellowTransparent, TranslucentTriclinic0.006
38Wardite5.0Colourless, white, lightly coloured blue to green, yellow-green, light yellow, brown, colourless in transmitted light.Transparent, OpaqueTetragonal0.006
39Scheelite4.5 - 5.0Tan, golden-yellow, colourless, white, greenish, dark brown, etc., colourless in transmitted lightTransparent, OpaqueTetragonal0.006
40Beryllonite5.5 - 6.0Colourless, white, rarely pale light yellow, colourless in transmitted light.Transparent, TranslucentMonoclinic0.006
41Magnesite3.5 - 4.5Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light.Transparent, TranslucentTrigonal0.005
42Stolzite2.5 - 3.0Reddish brown, brown, yellowish gray, smoky-gray, gray-brown, ostraw-yellow, lemon-yellow, orange-yellow, red or green (rare)Transparent, TranslucentTetragonal0.005
43Monazite-(Ce)5.0 - 5.5Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light.TranslucentMonoclinic0.005
44Zircon7.5Colourless, yellow, grey, reddish-brown, green, brown, blackTransparent, Translucent, OpaqueTetragonal0.005
45Pentlandite3.5 - 4.0Pale bronze-yellow, bronze, brown, reddish brown when argentianOpaqueIsometric0.005
46Samarskite-(Y)5.0 - 6.0Black internally, pale to yellow-brown surfaceMonoclinic0.005
47Tridymite6.5 - 7.0Colourless, white, yellowish white, or greyTransparent, TranslucentTriclinic0.005
48Breithauptite5.5Copper-red with a violet tintOpaqueHexagonal0.005
49Cumengeite2.5Indigo blueTranslucentTetragonal0.005
50Platinum4.0 - 4.5Steel grey to dark greyOpaqueIsometric0.004
51Corundum9.0Colourless, blue, red, pink, yellow, grey, golden-brownTransparent, Translucent, OpaqueTrigonal0.004
52Norbergite6.0 - 6.5Orange-yellow, yellow, orange to brown.Transparent, TranslucentOrthorhombic0.004
53Pollucite6.5Almost always colorless or white, also light gray, light pink, light blue, pale violetTransparent, TranslucentIsometric0.004
54Goosecreekite4.5Colorless, whiteTransparentMonoclinic0.004
55Hydroboracite2.0Colourless, whiteTransparentMonoclinic0.004
56Molybdenite1.0 - 1.5Black, lead gray, or grayOpaqueHexagonal0.004
57Titanite5.0 - 5.5Colourless, brown, green, yellow, rose-red or black.Transparent, TranslucentMonoclinic0.004
58Datolite5.0 - 5.5White, greyish, pale green, red, yellow, pink, etc.Transparent, Translucent, OpaqueMonoclinic0.004
59Zunyite7.0Colourless, grey, white, flesh-redTransparent, TranslucentIsometric0.004
60Cristobalite6.0 - 7.0Colorless, white, also blue grey, brown, grey, yellowTransparent, TranslucentTetragonal0.003
61Muscovite2.5White to colorless, silvery-white, and tinged various colors by impurities.Transparent, TranslucentMonoclinic0.003
62Ulexite2.5Colourless, white, grey with included clays.TransparentTriclinic0.003
63Goyazite4.5 - 5.0White, Yellow, honey-yellow, pink, lilac, orange or colourless, colourless in transmitted light.Transparent, TranslucentTrigonal0.003
64Parapierrotite2.5 - 3.0BlackOpaqueMonoclinic0.003
65Petalite6.5Colourless, white, grey, pinkTransparent, TranslucentMonoclinic0.003
66Lazurite5.0 - 5.5ultramarine, midnight blue, bluish green, greenOpaqueIsometric0.003
67Analcime5.0 - 5.5White, colourless, gray, pink, greenish, yellowishTransparent, TranslucentTriclinic0.003
68Euclase7.5Colorless, white, pale green to deep yellowish green, greenish blue, pale blue to deep blueTransparent, TranslucentMonoclinic0.003
69Sepiolite2.0White, light gray or light yellow.Translucent, OpaqueOrthorhombic0.003
70Tenorite3.5Grey, blackOpaqueMonoclinic0.003
71Augelite4.5 - 5.0White, colourless, pale yellow, light green, rarely blue or pink, colourless in transmitted light.TransparentMonoclinic0.003
72Eudidymite6.0Monoclinic0.003
73Plumbojarosite1.5 - 2.0Golden-brown to dark-brown, dark brown-red, blackishTranslucent, OpaqueTrigonal0.003
74Lazulite5.5 - 6.0Blue, sky-blue, bluish whiteTransparent, TranslucentMonoclinic0.003
75Phillipsite-K4.0 - 5.0WhiteMonoclinic0.003
76Phlogopite2.0 - 3.0Brown, gray, green, yellow, or reddish brownTransparent, TranslucentMonoclinic0.003
77Axinite-(Fe)6.5 - 7.0Brown, clove-brown, plum blue, pearl grayTransparent, TranslucentTriclinic0.003
78Ancylite-(Ce)4.0 - 4.5Light yellow, orange-yellow, yellow-brown, greyTranslucentOrthorhombic0.002
79Howlite3.5 - 6.5White, colorless, brownTransparentMonoclinic0.002
80Calaverite2.5 - 3.0Brass yellow to silver whiteOpaqueMonoclinic0.002
81Halite2.5Colourless, whitish, yellow, red, purple or blueTransparent, TranslucentIsometric0.002
82Epididymite5.5ColourlessTransparentOrthorhombic0.002
83Hydrocerussite3.5White or grey, colourless in transmitted lightTransparent, TranslucentTrigonal0.002
84Prehnite6.0 - 6.5Colourless to gray to yellow, yellow-green or whiteTranslucentOrthorhombic0.002
85Sassolite1.0White to grey, occasionally colourless, yellow or brown.TransparentTriclinic0.002
86Prosopite4.5Greyish, white, colourless in transmitted light.Transparent, TranslucentMonoclinic0.002
87Turquoise5.0 - 6.0bright blue, sky-blue, pale green, blue-green, turquoise-blue, apple-green, green-grayTransparent, Translucent, OpaqueTriclinic0.002
88Cosalite2.5 - 3.0GreyOpaqueOrthorhombic0.002
89Sillimanite6.5 - 7.5Colorless, white, yellow, brown, green, gray.Transparent, TranslucentOrthorhombic0.002
90Hambergite7.5Colourless, greyish, yellowish, colourless in transmitted lightTransparent, TranslucentOrthorhombic0.002
91Cubanite3.5Brass- to bronze-yellowOpaqueOrthorhombic0.002
92Colemanite4.5Colourless, white, yellowish, grey, colourless in transitted lightTransparent, TranslucentMonoclinic0.002
93Sartorite3.0Grey, grayish blackOpaqueMonoclinic0.002
94Anorthite6.0 - 6.5Colourless, reddish grey, whiteTransparent, TranslucentTriclinic0.002
95Terskite5.0White, pale lilac to violetOrthorhombic0.002
96Spodumene6.5 - 7.0Colourless, yellow, light green, emerald-green, pink to violet, purple, white, grayTransparent, TranslucentMonoclinic0.002
97Rutile6.0 - 6.5Blood red, brownish yellow, brown-red, yellow, greyish-black, black, brown, bluish or violetTransparentTetragonal0.002
98Cinnabar2.0 - 2.5Tint or shade of red, cochineal red, brownish redTransparent, TranslucentTrigonal0.002
99Florencite-(Ce)5.0 - 6.00.002
100Ilmenite5.0 - 6.0Iron black or blackOpaqueTrigonal0.002