# Mineral Hardness Color Transparency Crystal System Probability See More
1Davidite-(La)6.0BlackTrigonal0.314
2Staurolite7.0 - 7.5Dark brown, brownish-black, red-brownTranslucentMonoclinic0.065
3Almandine7.0 - 7.5Deep red, brownish red, red-violet, blackTransparent, TranslucentIsometric0.046
4Monazite-(Ce)5.0 - 5.5Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light.TranslucentMonoclinic0.039
5Diamond10.0Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare)Transparent, Translucent, OpaqueIsometric0.026
6Spessartine6.5 - 7.5Red, reddish orange, yellowish brown, reddish brown, or brownTransparent, TranslucentIsometric0.026
7Uraninite5.0 - 6.0Black, brownish-black, greyish, greenish, green-gray (thin fragments)OpaqueIsometric0.019
8Andalusite6.5 - 7.5Pink to red brown, occasionally yellow, green, white, gray rarely violetTransparent, TranslucentOrthorhombic0.019
9Chromite5.5BlackTranslucent, OpaqueIsometric0.013
10Magnetite5.5 - 6.5Greyish black or iron blackOpaqueIsometric0.012
11Beryl7.5 - 8.0Colorless, green, blue, yellow, white, pink, etc.Hexagonal0.012
12Titanite5.0 - 5.5Colourless, brown, green, yellow, rose-red or black.Transparent, TranslucentMonoclinic0.011
13Chrysoberyl8.5Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blueTransparent, TranslucentOrthorhombic0.009
14Tantalite-(Mn)6.0Pink to nearly colourless, reddish brown to blackOpaqueOrthorhombic0.009
15Pyrope7.5Blood red, orange red, purple red, pink, black red, colorless.Isometric0.009
16Augite5.5 - 6.0Brown-green, black, green-black, brown, purplish brownTranslucent, OpaqueMonoclinic0.008
17Leucite5.5 - 6.0White, greyTransparent, TranslucentTetragonal0.008
18Gadolinite-(Y)6.5 - 7.0Black, greenish-black, brownOpaqueMonoclinic0.008
19Hydroxylapatite5.0White, grey, yellow, green, violet, purple, red or brownTransparent, Translucent, OpaqueHexagonal0.007
20Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.006
21Cassiterite6.0 - 7.0Black, yellow, brown, red or white.Transparent, Translucent, OpaqueTetragonal0.006
22Parisite-(Ce)4.5Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light.Transparent, TranslucentMonoclinic0.006
23Ilmenite5.0 - 6.0Iron black or blackOpaqueTrigonal0.006
24Euxenite-(Y)5.5 - 6.5Black, greenish or brownish tint at timesOrthorhombic0.005
25Kaersutite5.0 - 6.0Dark brown to blackMonoclinic0.005
26Corundum9.0Colourless, blue, red, pink, yellow, grey, golden-brownTransparent, Translucent, OpaqueTrigonal0.005
27Baddeleyite6.5Colourless to yellow, green, greenish or reddish brown, brown, iron-black, colourless to brown in transmitted lightTransparentMonoclinic0.005
28Zircon7.5Colourless, yellow, grey, reddish-brown, green, brown, blackTransparent, Translucent, OpaqueTetragonal0.005
29Riebeckite5.0 - 5.5Usually black, also commonly light blue to blue-black, gray-blue, gray, brownTranslucent, OpaqueMonoclinic0.005
30Iron4.5Iron-blackOpaqueIsometric0.004
31Cordierite7.0 - 7.5Grey, blue, blue-violet, greenish, yellowish brown, colourless to very light blue in transmitted light.Transparent, TranslucentOrthorhombic0.004
32Hydroxylherderite5.0 - 5.5Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light.Transparent, TranslucentMonoclinic0.004
33Edenite5.0 - 6.0White, grey, pale to dark green, also brown and pale pinkish-brownMonoclinic0.004
34Actinolite5.0 - 6.0Green, green-black, grey-green, or blackTransparent, TranslucentMonoclinic0.004
35Fergusonite-(Y)5.5 - 6.5Grey, yellow, brownOpaqueTetragonal0.004
36Rhodonite5.5 - 6.5Red, pink, brownish-red, gray.Transparent, TranslucentTriclinic0.004
37Forsterite7.0Green, pale yellow or white.Transparent, TranslucentOrthorhombic0.004
38Ilvaite5.5 - 6.0Iron-black, dark grayish blackOpaqueOrthorhombic0.004
39Chondrodite6.0 - 6.5Yellow, Red or Brown.Transparent, TranslucentMonoclinic0.004
40Topaz8.0Colourless, white, pale blue, light green, yellow, yellowish brown, or redTransparent, TranslucentOrthorhombic0.004
41Platinum4.0 - 4.5Steel grey to dark greyOpaqueIsometric0.004
42Sulphur1.5 - 2.5Yellow, sulphur-yellow, brownish or greenish yellow, orange, whiteTransparent, TranslucentOrthorhombic0.003
43Goethite5.0 - 5.5brownish black, yellow-brown, reddish brownOpaqueOrthorhombic0.003
44Brannerite4.5 - 5.5Black, brownish olive-green, yellow-brown to yellow with alteration, yellowish green in transmitted lightOpaqueMonoclinic0.003
45Becquerelite2.5Amber-yellow, golden to lemon-yellow, yellow-orange, brownish yellow, yellow in transmitted lightTransparentOrthorhombic0.003
46Xenotime-(Y)4.0 - 5.0Yellowish brown, reddish, brown, light red, flesh-red, light green, gray, grayish-white, wine-yellowTranslucent, OpaqueTetragonal0.003
47Franklinite5.5 - 6.0BlackOpaqueIsometric0.003
48Microcline6.0 - 6.5White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green.Transparent, TranslucentTriclinic0.003
49Loparite-(Ce)5.50.003
50Thorianite6.5 - 7.0Dark grey, brown-blackIsometric0.003
51Cobaltite5.5Reddish silver white, violet steel gray, or black.OpaqueOrthorhombic0.003
52Hauerite4.0Reddish-brown/blackOpaqueIsometric0.003
53Sillimanite6.5 - 7.5Colorless, white, yellow, brown, green, gray.Transparent, TranslucentOrthorhombic0.003
54Quartz7.0Colorless, purple, rose, red, black, yellow, brown, green, blue, orange, etc.Transparent, TranslucentTrigonal0.003
55Polycrase-(Y)5.0 - 6.0BlackOrthorhombic0.003
56Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.003
57Chalcopyrite3.5 - 4.0Brass yellow, often with an iridescent tarnish.OpaqueTetragonal0.002
58Bismuth2.0 - 2.5Reddish-white to creamy-white, tarnishes iridescent pinkish, yellowish or bluishOpaqueTrigonal0.002
59Piemontite6.0 - 6.5Red, red-violet, red-brown to reddish blackTranslucent, OpaqueMonoclinic0.002
60Mellite2.0 - 2.5Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light.Transparent, TranslucentTetragonal0.002
61Gold2.5 - 3.0Rich yellow, paling to whitish-yellow with increasing silver, blue & green in transmitted light (only thinnest folia [gold leaf])OpaqueIsometric0.002
62Marcasite6.0 - 6.5Pale brass-yellow, tin-white on fresh exposures.OpaqueOrthorhombic0.002
63Eudialyte5.0 - 6.0Variable: Carmine-red, orange-red, orange, pink, cherry-red, brownish-red, yellowish-brown, brown, yellow, violet, green.TranslucentTrigonal0.002
64Willemite5.5Colorless, white, pastel green, apple-green, light blue, azure-blue, yellow, burgundy-red, brown, mahogany-brown, gray, black, pinkTransparent, TranslucentTrigonal0.002
65Diopside5.5 - 6.5light to dark green, blue, brown, colourless, snow white, grey, pale violetTransparent, OpaqueMonoclinic0.002
66Marialite5.5 - 6.0Bluish, Brownish, Colorless, Violet, GreenishTransparent, TranslucentTetragonal0.002
67Pyrite6.0 - 6.5Pale brass-yellowOpaqueIsometric0.002
68Elbaite7.5Green, red to pink, blue, orange, yellow, colourlessTransparent, TranslucentTrigonal0.002
69Magnesite3.5 - 4.5Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light.Transparent, TranslucentTrigonal0.002
70Thorite4.5Yellow, yellow-brown, red-brown, green, orange to blackOpaqueTetragonal0.002
71Natrojarosite2.5 - 3.5Yellow, golden brown, red-brownTransparent, TranslucentTrigonal0.002
72Dravite7.0Pale brown to dark-brown to brownish-black, also dark-yellow, blue.Transparent, TranslucentTrigonal0.002
73Talc1.0Colorless, white, pale green, bright emerald-green to dark green, brown, grayTransparent, TranslucentTriclinic0.002
74Schorl7.0Bluish-black to black, sometimes brownish-black, rarely greenish-black.Translucent, OpaqueTrigonal0.002
75Ferberite4.0 - 4.5Black, dark brown in transmitted lightOpaqueMonoclinic0.002
76Stichtite1.5 - 2.0Rose-pink to purpleTransparentTrigonal0.002
77Columbite-(Fe)6.0Black to brownish blackOpaqueOrthorhombic0.002
78Lazurite5.0 - 5.5ultramarine, midnight blue, bluish green, greenOpaqueIsometric0.002
79Pargasite5.0 - 6.0Light-brown, brown, greenish-brown to dark green and black.Monoclinic0.002
80Realgar1.5 - 2.0Dark red to orange-redTransparentMonoclinic0.002
81Crocoite2.5 - 3.0Orange, red, yellow, orange-red in transmitted light.Transparent, TranslucentMonoclinic0.002
82Greenockite3.0 - 3.5Yellow to red.TranslucentHexagonal0.002
83Kutnohorite3.5 - 4.0White, pale rose, pink, light to medium brownTranslucentTrigonal0.002
84Spinel7.5 - 8.0Black, blue, red, violet, green, brown, pinkTransparent, TranslucentIsometric0.002
85Chamosite3.0Green, grey-green, blackMonoclinic0.002
86Arsenopyrite5.5 - 6.0Silver-white to steel-gray, may have a slight yellow appearanceOpaqueMonoclinic0.002
87Danburite7.0 - 7.5Pale yellow, yellowish-brown, colourlessTransparent, TranslucentOrthorhombic0.001
88Aenigmatite5.5 - 6.0Velvet-blackTranslucent, OpaqueTriclinic0.001
89Cinnabar2.0 - 2.5Tint or shade of red, cochineal red, brownish redTransparent, TranslucentTrigonal0.001
90Perovskite5.5Dark brown, black, red-brown, yellow shadesTransparent, TranslucentOrthorhombic0.001
91Sturmanite2.5Bright Yellow to amberTransparent, TranslucentTrigonal0.001
92Pyroxmangite5.5 - 6.0Pink, red, brownTransparent, TranslucentTriclinic0.001
93Vivianite1.5 - 2.0Colourless and transparent when fresh, quickly turning pale to deep blue, greenish-blue or bluish-green.Transparent, TranslucentMonoclinic0.001
94Tilasite5.0Light gray, violet-gray, pinkish red (Långban), olive-green, apple-green (India), colourless or pale green in transmitted light.TranslucentMonoclinic0.001
95Britholite-(Ce)5.5Brown, greenish brown, yellow, resin brown, black.Hexagonal0.001
96Aeschynite-(Y)5.0 - 6.0Pale yellow, yellow-orange, pale greenish yellow, black, brownishblackTransparent, TranslucentOrthorhombic0.001
97Roselite3.5Rose-red, pink, rose coloured in transmitted light.Transparent, TranslucentMonoclinic0.001
98Germanite4.0Pale greyish-pinkOpaqueIsometric0.001
99Bustamite5.5 - 6.5Pale to medium pink, brownish red, colourless to yellowish pink in transmitted lightTransparent, TranslucentTriclinic0.001
100Vonsenite5.0Black, greenish blackOpaqueOrthorhombic0.001