# Mineral Hardness Color Transparency Crystal System Probability See More
1Stokesite6.0Colourless, white, light blueTransparent, TranslucentOrthorhombic0.214
2Crandallite5.0Yellow, white, gray, colorless in transmitted light.Translucent, OpaqueTrigonal0.069
3Johannsenite6.0blue-green, grey-white, dark brown, colourlessMonoclinic0.044
4Eulytine4.5Orange, orange brown to red brown, bright lime green, colorlessTransparentIsometric0.034
5Diamond10.0Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare)Transparent, Translucent, OpaqueIsometric0.029
6Rammelsbergite5.5 - 6.0Tin white with faint pinkish hueOpaqueOrthorhombic0.02
7Stilpnomelane3.0 - 4.0Red, brown, black, dark green, dark reddish brown, golden brownTranslucentTriclinic0.012
8Wavellite3.5 - 4.0Green to yellowish-green and yellow, greenish white, yellowish-brown, brown, brownish-black, blue, white and colourless, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.012
9Dufrenite3.5 - 4.5Dark green, olive-green, olive-brown, black, olive-brown to reddish brown with oxidation, bluish green to reddish brown or yellow in transmitted light.0.012
10Vesignieite3.0 - 4.0Yellow-green, dark olive-green0.009
11Xonotlite6.5White, grey, pale pink, colorlessTransparent, TranslucentMonoclinic0.008
12Magnesite3.5 - 4.5Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light.Transparent, TranslucentTrigonal0.008
13Kutnohorite3.5 - 4.0White, pale rose, pink, light to medium brownTranslucentTrigonal0.007
14Carpholite5.0 - 5.5YellowOrthorhombic0.007
15Thomsonite-Ca5.0 - 5.5Colourless, white, light yellow, light green, pink, brownTransparent, TranslucentOrthorhombic0.007
16Petitjeanite4.5White to pale pink or yellow, also dark brownTriclinic0.007
17Siderite3.5 - 4.5Yellowish-brown to greyish-brown, pale yellow to tannish, grey, brown, green, red, black and sometimes nearly colourless, tarnished iridescent at times, colourless to yellow and yellow-brown in transmitted light.TranslucentTrigonal0.007
18Prehnite6.0 - 6.5Colourless to gray to yellow, yellow-green or whiteTranslucentOrthorhombic0.006
19Scolecite5.0 - 5.5colorless, white, pink, salmon, red, greenTransparent, TranslucentMonoclinic0.006
20Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.006
21Witherite3.0 - 3.5Colourless, white, greyish, light yellow, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.006
22Boulangerite2.5 - 3.0Lead greyOpaqueMonoclinic0.005
23Plumosite2.0 - 3.0grey0.005
24Cervantite4.0 - 5.0Yellow, off-white, reddish-white, colourless in transmitted lightOrthorhombic0.005
25Ice1.5Colourless to white, pale blue to greenish blue in thick layersTransparent, TranslucentHexagonal0.005
26Elpidite5.0Colorless, white, gray, yellowish, orange, brown, beigeTransparent, Translucent, OpaqueOrthorhombic0.005
27Hydromagnesite3.5Colourless to white, colourless in transmitted lightTransparentMonoclinic0.005
28Zinkenite3.0 - 3.5Steel-greyOpaqueHexagonal0.005
29Edenite5.0 - 6.0White, grey, pale to dark green, also brown and pale pinkish-brownMonoclinic0.005
30Cryptomelane5.0 - 6.5Brown, grayish-whiteOpaqueMonoclinic0.005
31Rhodesite3.0 - 4.0WhiteTransparent, TranslucentOrthorhombic0.004
32Strashimirite2.5 - 3.0White, pale green, yellow-greenMonoclinic0.004
33Nickeline5.0 - 5.5Pale copper redOpaqueHexagonal0.004
34Pectolite4.5 - 5.0Colourless, white, pale pink, greenish, pale blueTransparent, TranslucentTriclinic0.004
35Pseudomalachite4.0 - 4.5Blue-green, green, dark green, green-black, green to bluish green in transmitted light.TranslucentMonoclinic0.004
36Polylithionite2.0 - 3.0white, gray, violet, light green, pinkishTransparentMonoclinic0.004
37Gyrolite2.5Brown, Colorless, White, GreenTransparent, TranslucentTriclinic0.004
38Hanksite3.0 - 3.5Colourless to grey, yellow or almost black, colourless in transmitted light.Transparent, TranslucentHexagonal0.003
39Theisite3.5Blue-greenOrthorhombic0.003
40Bavenite5.5WhiteOrthorhombic0.003
41Hydroxylapatite5.0White, grey, yellow, green, violet, purple, red or brownTransparent, Translucent, OpaqueHexagonal0.003
42Gilalite2.0Translucent green, blue-greenMonoclinic0.003
43Teineite2.5Sky-blue, cobalt-blue, bluish gray, bright blue to greenish blue in transmitted light.Orthorhombic0.003
44Saponite1.5 - 2.0White, gray-green, bluish, yellowMonoclinic0.003
45Olivenite3.0Olive green to yellow or brown, gray-green, grayish white, light green in transmitted light.Translucent, OpaqueMonoclinic0.003
46Beaverite-(Cu)3.5 - 4.5YellowTrigonal0.003
47Makatite5.5 - 6.0whiteMonoclinic0.003
48Leucite5.5 - 6.0White, greyTransparent, TranslucentTetragonal0.003
49Pyrite6.0 - 6.5Pale brass-yellowOpaqueIsometric0.003
50Metatorbernite2.5Pale green to dark greenTransparent, TranslucentTetragonal0.003
51Ramsdellite3.0black, steel-greyOpaqueOrthorhombic0.003
52Cannizzarite2.0White to silvery grayOpaqueMonoclinic0.003
53Magnesioferrite5.5 - 6.5Black, grey in reflected light.OpaqueIsometric0.003
54Iron4.5Iron-blackOpaqueIsometric0.003
55Ulexite2.5Colourless, white, grey with included clays.TransparentTriclinic0.003
56Minyulite3.5Colourless, white, greenish yellow, colourless in transmitted light.TransparentOrthorhombic0.003
57Bityite5.5White yellowish, colorless, white, brownishTransparent, TranslucentMonoclinic0.003
58Berthierite2.0 - 3.0Dark steel-grey, often with iridescent tarnish.OpaqueOrthorhombic0.002
59Cornwallite4.5Verdigis green, blackish-green, emerald-green, emerald-green in transmitted light.Translucent, OpaqueMonoclinic0.002
60Tangeite3.5yellow, yellow-green, olive green, green to dark green, light green in transmitted light.Transparent, TranslucentOrthorhombic0.002
61Catapleiite5.5 - 6.0Dark brown, reddish brown, flesh red, yellowish red, colourless, light grey, beige to tan, light yellow, orange, light blueTransparent, TranslucentMonoclinic0.002
62Actinolite5.0 - 6.0Green, green-black, grey-green, or blackTransparent, TranslucentMonoclinic0.002
63Sepiolite2.0White, light gray or light yellow.Translucent, OpaqueOrthorhombic0.002
64Greenockite3.0 - 3.5Yellow to red.TranslucentHexagonal0.002
65Greifensteinite3.0Monoclinic0.002
66Zincolivenite3.5Green, greenish blue0.002
67Philipsburgite3.0 - 4.0Bright emrald greenTransparentMonoclinic0.002
68Parnauite2.0 - 2.5Pale blue, green, dark green, blue-green, yellow-greenTranslucentOrthorhombic0.002
69Aikinite2.0 - 2.5Blackish lead-greyOpaqueOrthorhombic0.002
70Barytocalcite4.0Colourless, white, greyish, greenish, light yellowTransparent, TranslucentMonoclinic0.002
71Ferro-hornblende5.0 - 6.0Dark green to black, greenish-brown, more rarely lighter greenMonoclinic0.002
72Plancheite6.0Blue, greenish blueTranslucentOrthorhombic0.002
73Azurite3.5 - 4.0Azure blue, blue, light blue, or dark blue, light blue in transmitted lightTransparent, TranslucentMonoclinic0.002
74Orthoclase6.0Colorless to white, Greenish white, Grayish yellow, Pale pinkTransparent, TranslucentMonoclinic0.002
75Moraesite3.0WhiteMonoclinic0.002
76Geocronite2.5 - 3.0Light lead gray to grayishOpaqueMonoclinic0.002
77Pollucite6.5Almost always colorless or white, also light gray, light pink, light blue, pale violetTransparent, TranslucentIsometric0.002
78Gypsum2.0Colourless to white, often tinged other hues due to impurities, colourless in transmitted light..Transparent, Translucent, OpaqueMonoclinic0.002
79Pyrolusite2.0 - 6.5Black or very dark grey.OpaqueTetragonal0.002
80Rodalquilarite2.0 - 3.0Emerald- to grass-greenTranslucentTriclinic0.002
81Magnetite5.5 - 6.5Greyish black or iron blackOpaqueIsometric0.002
82Glauberite2.5 - 3.0Grey, yellowish, colourless, colourless in transmitted lightTransparent, TranslucentMonoclinic0.002
83Millerite3.0 - 3.5Pale brass-yellow, with an iridescent tarnish, and greenish-grey.OpaqueTrigonal0.002
84Romanechite5.0 - 6.0Greyish black, black0.002
85Tyuyamunite1.5 - 2.0Canary yellow, lemon-yellow, greenish yellow (upon exposure to sunlight), colourless to pale yellow in transmitted light.Translucent, OpaqueOrthorhombic0.002
86Rutherfordine6.5Pale brownish-yellow, yellow to orange, yellowish greenTransparentOrthorhombic0.002
87Shattuckite3.5Light to dark blue.TranslucentOrthorhombic0.002
88Fluoro-richterite5.0 - 6.0Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.Monoclinic0.002
89Stellerite4.5Colourless to white, pink, orangeTransparentOrthorhombic0.002
90Nickelskutterudite5.5 - 6.0Tin white - silver greyOpaqueIsometric0.002
91Volborthite3.5Olive-green, yellow-green, green to yellow-green in transmitted light.TranslucentMonoclinic0.002
92Albite6.0 - 6.5White to grey, bluish, greenish, reddishTransparent, TranslucentTriclinic0.002
93Baryte3.0Colourless, white, yellow, brown, grey, blue, etc., colourless in transmitted light (also tinted yellow, brown, green, blue, etc.)Transparent, Translucent, OpaqueOrthorhombic0.002
94Gageite3.0Usually brownish purple, brown, pinkish brown, light pink, light brown, also colorless in small crystalsTransparent, TranslucentMonoclinic0.002
95Conichalcite4.5Green, yellow-green, greenish yellow, light green to yellowish green in transmitted light.TranslucentOrthorhombic0.002
96Hollandite4.0 - 6.0Silvery-grey to greyish black, blackOpaqueMonoclinic0.002
97Anthophyllite5.5 - 6.0White, greenish grey, green, clove brown, or brownish greenTransparent, TranslucentOrthorhombic0.002
98Hydrocerussite3.5White or grey, colourless in transmitted lightTransparent, TranslucentTrigonal0.002
99Raite3.0Pale brown to golden-yellow, reddish brown, tan, rose, lavender, bronzeTransparentOrthorhombic0.002
100Colusite3.0 - 4.0Bronze, pinkish bronzeOpaqueIsometric0.002