# Mineral Hardness Color Transparency Crystal System Probability See More
1Brandtite3.5Colourless, white, pink, colourless in transmitted light.Transparent, TranslucentMonoclinic0.077
2Bustamite5.5 - 6.5Pale to medium pink, brownish red, colourless to yellowish pink in transmitted lightTransparent, TranslucentTriclinic0.064
3Whitlockite5.0Colourless, grey-white, light pink, light yellow, colourless in transmitted light.Transparent, TranslucentTrigonal0.047
4Petalite6.5Colourless, white, grey, pinkTransparent, TranslucentMonoclinic0.043
5Platinum4.0 - 4.5Steel grey to dark greyOpaqueIsometric0.032
6Caysichite-(Y)4.5Colourless, white, pale yellow, rarely greenishTransparent, TranslucentOrthorhombic0.032
7Fluoborite3.5Colourless, violet or white, colourless in transmitted lightTransparent, TranslucentHexagonal0.022
8Mullite6.0 - 7.0Colourless, white, yellow, pink, red, grayTransparent, TranslucentOrthorhombic0.016
9Parisite-(Ce)4.5Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light.Transparent, TranslucentMonoclinic0.014
10Ussingite6.0 - 7.0Pale to medium violet, reddish violet, sometimes barely tinted purpleTransparent, TranslucentTriclinic0.013
11Edenite5.0 - 6.0White, grey, pale to dark green, also brown and pale pinkish-brownMonoclinic0.012
12Bementite6.0Brown, dark brown, golden brown, grayish-yellowTranslucentMonoclinic0.011
13Wollastonite4.5 - 5.0White, gray-white, light green, pinkish, brown, red, yellowTransparent, TranslucentTriclinic0.011
14Teineite2.5Sky-blue, cobalt-blue, bluish gray, bright blue to greenish blue in transmitted light.Orthorhombic0.01
15Sodalite5.5 - 6.0All ColoursTransparent, TranslucentIsometric0.01
16Richterite5.0 - 6.0Brown to brownish-red, rose-red, or yellow, grey-brown, and also pale to dark green. dark green blue and grey blueTransparentMonoclinic0.009
17Churchite-(Y)3.0Colorless, white, gray, yellow, colourless in transmitted light.TransparentMonoclinic0.009
18Mellite2.0 - 2.5Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light.Transparent, TranslucentTetragonal0.009
19Aragonite3.5 - 4.0Colorless to white or grey, often stained various hues by impurities, such as blue, green, red or violet, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.009
20Sellaite5.0 - 5.5Colourless, white, colourless in transmitted light.TransparentTetragonal0.008
21Hibonite7.5 - 8.0Black to brownisk blackOpaqueHexagonal0.007
22Marialite5.5 - 6.0Bluish, Brownish, Colorless, Violet, GreenishTransparent, TranslucentTetragonal0.007
23Thortveitite6.0 - 7.0Greyish-green, black, grey, blue, yellow, brownTranslucent, OpaqueMonoclinic0.006
24Triplite5.0 - 5.5Brown, red-brown, dark brown, black (altered), light brownish u=yellow to dark reddish brown in transmitted light.OpaqueMonoclinic0.006
25Spodumene6.5 - 7.0Colourless, yellow, light green, emerald-green, pink to violet, purple, white, grayTransparent, TranslucentMonoclinic0.006
26Kingsmountite2.5Colorless to white, may have a light tan to pale brown tingeTransparent, TranslucentMonoclinic0.006
27Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.006
28Crandallite5.0Yellow, white, gray, colorless in transmitted light.Translucent, OpaqueTrigonal0.005
29Gypsum2.0Colourless to white, often tinged other hues due to impurities, colourless in transmitted light..Transparent, Translucent, OpaqueMonoclinic0.005
30Willemite5.5Colorless, white, pastel green, apple-green, light blue, azure-blue, yellow, burgundy-red, brown, mahogany-brown, gray, black, pinkTransparent, TranslucentTrigonal0.005
31Heterogenite3.0 - 5.0Black, reddish, blackish-brownOpaqueHexagonal0.005
32Kovdorskite4.0Pale rose, pale blueMonoclinic0.005
33Phosgenite2.0 - 3.0Colourless, white, yellow, brown, greenish or pink, colourless in transmitted light.Transparent, TranslucentTetragonal0.005
34Diaspore6.5 - 7.0white, brown, colourless, pale yellow, greyish, greenish grey, lilac, pinkishTransparent, TranslucentOrthorhombic0.005
35Niocalite6.0Lemon-yellow, colourless in transmitted lightTransparentMonoclinic0.005
36Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.005
37Parapierrotite2.5 - 3.0BlackOpaqueMonoclinic0.005
38Fluellite3.0Colourless, white, yellowTransparentOrthorhombic0.005
39Svanbergite5.0colourless, yellow, reddish brown to rose-pink, colourless in transmitted lightTranslucentTrigonal0.005
40Polycrase-(Y)5.0 - 6.0BlackOrthorhombic0.004
41Topaz8.0Colourless, white, pale blue, light green, yellow, yellowish brown, or redTransparent, TranslucentOrthorhombic0.004
42Rabbittite2.5Pale greenMonoclinic0.004
43Calcioancylite-(Ce)4.0 - 4.5TranslucentOrthorhombic0.004
44Vladimirite3.5Usually colorless to white, also pale roseTransparent, TranslucentMonoclinic0.004
45Epistilbite4.0Colorless, white, pinkish, yellowishTransparent, TranslucentMonoclinic0.004
46Hedyphane4.0 - 5.0White, yellowish white, buff, bluish, colourless in transmitted light.Hexagonal0.004
47Woodhouseite4.5White, flesh-pink, colourlessTransparent, TranslucentTrigonal0.004
48Stibarsen3.0 - 4.0White, reddish gray, tarnishes grayOpaqueTrigonal0.004
49Brannerite4.5 - 5.5Black, brownish olive-green, yellow-brown to yellow with alteration, yellowish green in transmitted lightOpaqueMonoclinic0.004
50Kyanite5.5 - 7.0Blue, white, light gray, green, rarely yellow, orange, pinkTransparent, TranslucentTriclinic0.004
51Parahopeite3.5Colourless, colourless in transmitted light.TransparentTriclinic0.004
52Cervantite4.0 - 5.0Yellow, off-white, reddish-white, colourless in transmitted lightOrthorhombic0.004
53Agrellite5.5White to greyish or greenish white.Transparent, TranslucentTriclinic0.004
54Halite2.5Colourless, whitish, yellow, red, purple or blueTransparent, TranslucentIsometric0.004
55Lafossaite3.0 - 4.0Grey-brown0.004
56Afmite2.00.004
57Romanechite5.0 - 6.0Greyish black, black0.004
58Thorite4.5Yellow, yellow-brown, red-brown, green, orange to blackOpaqueTetragonal0.003
59Minrecordite3.5 - 4.0White, colourlessTranslucentTrigonal0.003
60Witherite3.0 - 3.5Colourless, white, greyish, light yellow, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.003
61Fairfieldite3.5White, greenish white, light amber, salmon-yellow, colourless in transmitted light.Transparent, TranslucentTriclinic0.003
62Xenotime-(Y)4.0 - 5.0Yellowish brown, reddish, brown, light red, flesh-red, light green, gray, grayish-white, wine-yellowTranslucent, OpaqueTetragonal0.003
63Milarite6.0Hexagonal0.003
64Kentrolite5.0Black, sometimes with dark red internal reflectionsTranslucentOrthorhombic0.003
65Quartz7.0Colorless, purple, rose, red, black, yellow, brown, green, blue, orange, etc.Transparent, TranslucentTrigonal0.003
66Brewsterite-Sr5.0White0.003
67Umangite3.0Red, bluish red-black, iridescent violet-blue (tarnished)OpaqueTetragonal0.003
68Selenium2.0Gray to grayish black, reddish gray, redOpaqueTrigonal0.003
69Barylite7.0bluish white, colourlessOrthorhombic0.003
70Tantalite-(Mn)6.0Pink to nearly colourless, reddish brown to blackOpaqueOrthorhombic0.003
71Kaolinite2.0 - 2.5White to cream and pale-yellow, also often stained various hues, tans and browns being common.Translucent, OpaqueTriclinic0.003
72Whewellite2.5 - 3.0White, yellow, brown, colourless, colourless in transmitted light.Transparent, TranslucentMonoclinic0.003
73Lizardite2.00.003
74Beryl7.5 - 8.0Colorless, green, blue, yellow, white, pink, etc.Hexagonal0.003
75Kamphaugite-(Y)2.0 - 3.0White to colorlessTransparentTetragonal0.003
76Thaumasite3.5Colourless, whiteTransparent, TranslucentHexagonal0.003
77Meionite5.0 - 6.0Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brownTransparent, OpaqueTetragonal0.003
78Tetrawickmanite3.5 - 4.5Honey-yellow, brown-orangeTransparent, TranslucentTetragonal0.002
79Antimony3.0 - 3.5Tin-whiteOpaqueTrigonal0.002
80Zircon7.5Colourless, yellow, grey, reddish-brown, green, brown, blackTransparent, Translucent, OpaqueTetragonal0.002
81Ettringite2.0 - 2.5Colourless, colourless in transmitted light.TransparentTrigonal0.002
82Bastnasite-(Ce)4.0 - 4.5Yellow, reddish-brown, colourless to light yellow in transmitted light0.002
83Monazite-(Ce)5.0 - 5.5Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light.TranslucentMonoclinic0.002
84Hopeite3.5Yellow, white, colourless, grey or brown, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.002
85Chiavennite3.0Pale orange-yellowMonoclinic0.002
86Montebrasite5.5 - 6.0White, colorless, gray white, very pale brown, pale pink, pale yellowTransparent, TranslucentTriclinic0.002
87Salammoniac1.0 - 2.0Colourless, White, sometimes yellow or brown.TransparentIsometric0.002
88Phenakite7.5 - 8.0Colourless, white, yellow, pale roseTransparentTrigonal0.002
89Gasparite-(Ce)5.00.002
90Iron4.5Iron-blackOpaqueIsometric0.002
91Adamsite-(Y)3.0Colourless, white, pale pink, pale purple.Transparent, TranslucentTriclinic0.002
92Hambergite7.5Colourless, greyish, yellowish, colourless in transmitted lightTransparent, TranslucentOrthorhombic0.002
93Sillimanite6.5 - 7.5Colorless, white, yellow, brown, green, gray.Transparent, TranslucentOrthorhombic0.002
94Baddeleyite6.5Colourless to yellow, green, greenish or reddish brown, brown, iron-black, colourless to brown in transmitted lightTransparentMonoclinic0.002
95Uraninite5.0 - 6.0Black, brownish-black, greyish, greenish, green-gray (thin fragments)OpaqueIsometric0.002
96Anorthite6.0 - 6.5Colourless, reddish grey, whiteTransparent, TranslucentTriclinic0.002
97Sabugalite2.5YellowTransparent, TranslucentMonoclinic0.002
98Kolbeckite3.0 - 5.0Colourless, light yellow, when impure: cyan-blue, blue-gray, apple-greenTransparentMonoclinic0.002
99Barytocalcite4.0Colourless, white, greyish, greenish, light yellowTransparent, TranslucentMonoclinic0.002
100Cryptomelane5.0 - 6.5Brown, grayish-whiteOpaqueMonoclinic0.002