# Mineral Hardness Color Transparency Crystal System Probability See More
1Ussingite6.0 - 7.0Pale to medium violet, reddish violet, sometimes barely tinted purpleTransparent, TranslucentTriclinic0.147
2Chondrodite6.0 - 6.5Yellow, Red or Brown.Transparent, TranslucentMonoclinic0.048
3Coquimbite2.5Light violet to purple, Greenish white, Bluish white, Yellowish white, Brownish whiteTransparentTrigonal0.039
4Parisite-(Ce)4.5Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light.Transparent, TranslucentMonoclinic0.038
5Clinohumite6.0Monoclinic0.018
6Britholite-(Ce)5.5Brown, greenish brown, yellow, resin brown, black.Hexagonal0.017
7Orpiment1.5 - 2.0Orange-yellow to lemon-yellowTransparentMonoclinic0.013
8Titanite5.0 - 5.5Colourless, brown, green, yellow, rose-red or black.Transparent, TranslucentMonoclinic0.012
9Stilbite-Ca3.5 - 4.0White, colourless, red, light yellow, light to dark brown, cream, orange, pinkTransparent, TranslucentMonoclinic0.01
10Gysinite-(Nd)4.0 - 4.5light pink to reddish pinkTranslucentOrthorhombic0.01
11Leadhillite2.5 - 3.0Colourless to white, grey, yellowish, pale green to blue, colourless in transmitted light.Transparent, TranslucentMonoclinic0.01
12Challacolloite2.0 - 3.0Colourless to white0.009
13Sphalerite3.5 - 4.0Yellow, light to dark brown, black, red-brown, colourless, light blue. greenTransparent, TranslucentIsometric0.009
14Raspite2.5 - 3.0Pale yellow, yellowish brown, gray, colorlessTransparentMonoclinic0.009
15Vesuvianite6.5Brown, yellow, brown-black, light green, emerald green, white, red, purple, violet, blue-green to blueTransparent, TranslucentTetragonal0.008
16Harmotome4.0 - 5.0Colorless, white, grey, pink, yellow, brownTransparent, TranslucentMonoclinic0.008
17Cordierite7.0 - 7.5Grey, blue, blue-violet, greenish, yellowish brown, colourless to very light blue in transmitted light.Transparent, TranslucentOrthorhombic0.008
18Zincite4.0Red, orange, yellow, white, rarely greenTransparent, Translucent, OpaqueHexagonal0.008
19Sylvite1.5 - 2.0Colourless, grey, white, yellowish to reddish, seldom blue or violetTransparent, TranslucentIsometric0.008
20Chabazite-Ca4.0 - 5.0Colourless, white, yellow, pink, redTransparent, TranslucentTriclinic0.008
21Cryolite2.5Colourless, white, brown, grey, black, colourless in transmitted light.Transparent, TranslucentMonoclinic0.007
22Chernovite-(Y)4.0 - 5.0Tetragonal0.007
23Eosphorite5.0Usually Pale Brown, Golden Brown, also Medium Brown to Dark Brown, occasionally Pink, Rose redTransparent, TranslucentOrthorhombic0.007
24Tinzenite6.5 - 7.0Lemon-yellow, orange, redTriclinic0.007
25Euxenite-(Y)5.5 - 6.5Black, greenish or brownish tint at timesOrthorhombic0.007
26Chiavennite3.0Pale orange-yellowMonoclinic0.007
27Legrandite4.5Yellow to colourless, pale yellow to colourless in transmitted light.Transparent, TranslucentMonoclinic0.006
28Pyrostilpnite2.0Red, brownish red orange-red, fire redTransparent, TranslucentMonoclinic0.006
29Shigaite2.0Deep yellow with black, inhomogenous inclusionsTransparentTrigonal0.006
30Stellerite4.5Colourless to white, pink, orangeTransparentOrthorhombic0.006
31Lithiophorite3.0Blue to blackTrigonal0.005
32Talmessite5.0White, colorless, translucent pale green (nickelian), brownish pink (cobaltian)TransparentTriclinic0.005
33Sapphirine7.5Light blue, blue-gray, green, greenish gray, rarely yellow-brown or pinkTransparentMonoclinic0.005
34Fluellite3.0Colourless, white, yellowTransparentOrthorhombic0.005
35Scorodite3.5 - 4.0Green, blue-green, grey, grayish-green, blue, yellow-brown, nearly colourless, violet, colourless to faintly greenish or greenish brown in transmitted light.TranslucentOrthorhombic0.005
36Fluoro-richterite5.0 - 6.0Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.Monoclinic0.005
37Tsumcorite4.5Yellow-brown, red-brown, orangeTranslucentMonoclinic0.005
38Kasolite4.0 - 5.0Ocher yellow to brownish yellow, amber brown, lemon yellow, to green or reddish orangeTransparent, Translucent, OpaqueMonoclinic0.005
39Gmelinite-Na4.5Colorles, white, reddish white, salmon-red, yellowish, greenish whiteTransparent, Translucent, OpaqueHexagonal0.005
40Rheniite4.0Silvery-white, black, red translucentTranslucentTriclinic0.004
41Woodhouseite4.5White, flesh-pink, colourlessTransparent, TranslucentTrigonal0.004
42Roscherite4.5Brown, red, orange, greenish gray, yellowish green to brown in transmitted lightTransparent, TranslucentMonoclinic0.004
43Svanbergite5.0colourless, yellow, reddish brown to rose-pink, colourless in transmitted lightTranslucentTrigonal0.004
44Bismutite2.5 - 3.5Yellow to brown, greenish, green-grey, grey or black, colourless or tinted in shades of faint yellow, green, etc. in transmitted light.Transparent, TranslucentOrthorhombic0.004
45Brewsterite-Sr5.0White0.004
46Whitlockite5.0Colourless, grey-white, light pink, light yellow, colourless in transmitted light.Transparent, TranslucentTrigonal0.004
47Matlockite2.5 - 3.0Colourless, light yellow to light golden-yellow, greenishTransparentTetragonal0.004
48Weeksite1.0 - 2.0YellowOrthorhombic0.004
49Graphite1.0 - 2.0Iron black to steel-greyOpaqueHexagonal0.004
50Allanite-(Ce)5.5 - 6.0Brown to blackTranslucent, OpaqueMonoclinic0.003
51Smithsonite4.0 - 4.5White, grey, yellow, green to apple-green, blue, pink, purple, bluish grey, and brown, colourless or faintly tinted in transmitted light.TranslucentTrigonal0.003
52Witherite3.0 - 3.5Colourless, white, greyish, light yellow, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.003
53Tantalite-(Mn)6.0Pink to nearly colourless, reddish brown to blackOpaqueOrthorhombic0.003
54Iranite3.0Triclinic0.003
55Polycrase-(Y)5.0 - 6.0BlackOrthorhombic0.003
56Iodargyrite1.5 - 2.0Colourless (fresh), pale yellow, yellow, greenish yellow, brownish, grayishTransparent, TranslucentHexagonal0.003
57Beryllonite5.5 - 6.0Colourless, white, rarely pale light yellow, colourless in transmitted light.Transparent, TranslucentMonoclinic0.003
58Bastnasite-(Ce)4.0 - 4.5Yellow, reddish-brown, colourless to light yellow in transmitted light0.003
59Andalusite6.5 - 7.5Pink to red brown, occasionally yellow, green, white, gray rarely violetTransparent, TranslucentOrthorhombic0.003
60Gahnite7.5 - 8.0Dark blue-green, yellow, brown, blackIsometric0.003
61Thomasclarkite-(Y)2.0 - 3.0Honey-yellow to whiteTransparent, TranslucentMonoclinic0.003
62Sodalite5.5 - 6.0All ColoursTransparent, TranslucentIsometric0.003
63Scheelite4.5 - 5.0Tan, golden-yellow, colourless, white, greenish, dark brown, etc., colourless in transmitted lightTransparent, OpaqueTetragonal0.003
64Galenobismutite2.5 - 3.5Lead-gray, gray, light gray, tin-whiteOpaqueOrthorhombic0.003
65Mackayite4.5Pale bottle-green, olive green, brownish green, greenish black, greenish yellow to yellowish green in transmitted light.TransparentTetragonal0.003
66Gadolinite-(Y)6.5 - 7.0Black, greenish-black, brownOpaqueMonoclinic0.003
67Greenockite3.0 - 3.5Yellow to red.TranslucentHexagonal0.003
68Celestine3.0 - 3.5Colourless, shades of light blue, white, reddish, greenish, brownish, greyish, colourless or lightly tinted in transmitted lightTransparent, TranslucentOrthorhombic0.003
69Axinite-(Mn)6.5 - 7.0Brown, golden-yellowTransparent, TranslucentTriclinic0.003
70Opal5.5 - 6.5Colourless, white, yellow, red, orange, green, brown, black, blueTransparent, Translucent0.003
71Albite6.0 - 6.5White to grey, bluish, greenish, reddishTransparent, TranslucentTriclinic0.003
72Vauquelinite2.5 - 3.0Olive-green, apple-green, brown to nearly blackTranslucentMonoclinic0.003
73Monazite-(Ce)5.0 - 5.5Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light.TranslucentMonoclinic0.003
74Grossular6.5 - 7.0Brown, orange, red, yellow, green, white, colorlessTransparent, TranslucentIsometric0.003
75Kupletskite4.0Dark brown to black, brown, yellowTriclinic0.002
76Willemite5.5Colorless, white, pastel green, apple-green, light blue, azure-blue, yellow, burgundy-red, brown, mahogany-brown, gray, black, pinkTransparent, TranslucentTrigonal0.002
77Carpathite1.5Yellow, yellowish brownTranslucentMonoclinic0.002
78Plumbogummite4.0 - 5.0Light blue, gray-white, yellow-gray, yellow, yellow-brown, red-brown, greenish, bluish, dark blue-grayTranslucentTrigonal0.002
79Strontianite3.5Colourless, white, gray, light yellow, green, brown, colourless in transmitted lightTransparent, TranslucentOrthorhombic0.002
80Zemannite2.0BrownHexagonal0.002
81Greifensteinite3.0Monoclinic0.002
82Metasideronatrite1.5 - 2.5Golden yellow, straw yellow, yellow in transmitted light.TransparentOrthorhombic0.002
83Emplectite2.0Greyish to tin-whiteOpaqueOrthorhombic0.002
84Phosgenite2.0 - 3.0Colourless, white, yellow, brown, greenish or pink, colourless in transmitted light.Transparent, TranslucentTetragonal0.002
85Descloizite3.0 - 3.5Brownish red, red-orange, reddish brown to blackish brown, nearly blackTransparent, TranslucentOrthorhombic0.002
86Villiaumite2.0 - 2.5Dark carmine-red, dark red, light orange, pinkTransparentIsometric0.002
87Zircon7.5Colourless, yellow, grey, reddish-brown, green, brown, blackTransparent, Translucent, OpaqueTetragonal0.002
88Hopeite3.5Yellow, white, colourless, grey or brown, colourless in transmitted light.Transparent, TranslucentOrthorhombic0.002
89Berzelianite2.0Silver-White, shiny lead-grey, easily tarnishes iridescent blue-greyOpaqueIsometric0.002
90Xenotime-(Y)4.0 - 5.0Yellowish brown, reddish, brown, light red, flesh-red, light green, gray, grayish-white, wine-yellowTranslucent, OpaqueTetragonal0.002
91Andradite6.5 - 7.0Yellow, greenish yellow to emerald-green, dark green, brown, brownish red, brownish yellow, grayish black, black, may be sectoredTransparent, TranslucentIsometric0.002
92Bergenite6.0 - 6.5YellowMonoclinic0.002
93Strengite3.5 - 4.0Purple, violet, pink, peach-blossom-red, carmine, greenish white, colorless, Colourless to pale pink in transmitted light.Transparent, TranslucentOrthorhombic0.002
94Heterosite4.0 - 4.5Untreated mineral is usually Purple Black, also Deep rose to reddish purple, especially when treated in a strong acid solution.OpaqueOrthorhombic0.002
95Topaz8.0Colourless, white, pale blue, light green, yellow, yellowish brown, or redTransparent, TranslucentOrthorhombic0.002
96Clausthalite2.5 - 3.0Bluish grey to lead-greyOpaqueIsometric0.002
97Helvine6.0 - 6.5Golden yellow, brown, red, gray-yellow, yellow-greenTranslucentIsometric0.002
98Hingganite-(Y)6.0 - 7.0Monoclinic0.002
99Colemanite4.5Colourless, white, yellowish, grey, colourless in transitted lightTransparent, TranslucentMonoclinic0.002
100Wulfenite2.5 - 3.0Orange-yellow, yellow, honey-yellow, reddish-orange, rarely colourless, grey, brown, olive-green and even black.Transparent, Translucent, OpaqueTetragonal0.002