1 | Davidite-(La) | 6.0 | Black | | Trigonal | 0.314 | |
---|
2 | Staurolite | 7.0 - 7.5 | Dark brown, brownish-black, red-brown | Translucent | Monoclinic | 0.065 | |
---|
3 | Almandine | 7.0 - 7.5 | Deep red, brownish red, red-violet, black | Transparent, Translucent | Isometric | 0.046 | |
---|
4 | Monazite-(Ce) | 5.0 - 5.5 | Commonly reddish brown to brown, shades of green to brown, yellow brown, rarely nearly white, yellow, colourless in transmitted light. | Translucent | Monoclinic | 0.039 | |
---|
5 | Diamond | 10.0 | Colourless, yellowish to yellow, brown, black, blue, green or red, pink, champagne-tan, cognac-brown, lilac (very rare) | Transparent, Translucent, Opaque | Isometric | 0.026 | |
---|
6 | Spessartine | 6.5 - 7.5 | Red, reddish orange, yellowish brown, reddish brown, or brown | Transparent, Translucent | Isometric | 0.026 | |
---|
7 | Uraninite | 5.0 - 6.0 | Black, brownish-black, greyish, greenish, green-gray (thin fragments) | Opaque | Isometric | 0.019 | |
---|
8 | Andalusite | 6.5 - 7.5 | Pink to red brown, occasionally yellow, green, white, gray rarely violet | Transparent, Translucent | Orthorhombic | 0.019 | |
---|
9 | Chromite | 5.5 | Black | Translucent, Opaque | Isometric | 0.013 | |
---|
10 | Magnetite | 5.5 - 6.5 | Greyish black or iron black | Opaque | Isometric | 0.012 | |
---|
11 | Beryl | 7.5 - 8.0 | Colorless, green, blue, yellow, white, pink, etc. | | Hexagonal | 0.012 | |
---|
12 | Titanite | 5.0 - 5.5 | Colourless, brown, green, yellow, rose-red or black. | Transparent, Translucent | Monoclinic | 0.011 | |
---|
13 | Chrysoberyl | 8.5 | Green shades, emerald-green, greenish white, yellowish green, greenish brown, yellow, blue | Transparent, Translucent | Orthorhombic | 0.009 | |
---|
14 | Tantalite-(Mn) | 6.0 | Pink to nearly colourless, reddish brown to black | Opaque | Orthorhombic | 0.009 | |
---|
15 | Pyrope | 7.5 | Blood red, orange red, purple red, pink, black red, colorless. | | Isometric | 0.009 | |
---|
16 | Augite | 5.5 - 6.0 | Brown-green, black, green-black, brown, purplish brown | Translucent, Opaque | Monoclinic | 0.008 | |
---|
17 | Leucite | 5.5 - 6.0 | White, grey | Transparent, Translucent | Tetragonal | 0.008 | |
---|
18 | Gadolinite-(Y) | 6.5 - 7.0 | Black, greenish-black, brown | Opaque | Monoclinic | 0.008 | |
---|
19 | Hydroxylapatite | 5.0 | White, grey, yellow, green, violet, purple, red or brown | Transparent, Translucent, Opaque | Hexagonal | 0.007 | |
---|
20 | Stilpnomelane | 3.0 - 4.0 | Red, brown, black, dark green, dark reddish brown, golden brown | Translucent | Triclinic | 0.006 | |
---|
21 | Cassiterite | 6.0 - 7.0 | Black, yellow, brown, red or white. | Transparent, Translucent, Opaque | Tetragonal | 0.006 | |
---|
22 | Parisite-(Ce) | 4.5 | Brown, brownish-yellow, waxy yellow, gray-yellow, colourless to yellow in transmitted light. | Transparent, Translucent | Monoclinic | 0.006 | |
---|
23 | Ilmenite | 5.0 - 6.0 | Iron black or black | Opaque | Trigonal | 0.006 | |
---|
24 | Euxenite-(Y) | 5.5 - 6.5 | Black, greenish or brownish tint at times | | Orthorhombic | 0.005 | |
---|
25 | Kaersutite | 5.0 - 6.0 | Dark brown to black | | Monoclinic | 0.005 | |
---|
26 | Corundum | 9.0 | Colourless, blue, red, pink, yellow, grey, golden-brown | Transparent, Translucent, Opaque | Trigonal | 0.005 | |
---|
27 | Baddeleyite | 6.5 | Colourless to yellow, green, greenish or reddish brown, brown, iron-black, colourless to brown in transmitted light | Transparent | Monoclinic | 0.005 | |
---|
28 | Zircon | 7.5 | Colourless, yellow, grey, reddish-brown, green, brown, black | Transparent, Translucent, Opaque | Tetragonal | 0.005 | |
---|
29 | Riebeckite | 5.0 - 5.5 | Usually black, also commonly light blue to blue-black, gray-blue, gray, brown | Translucent, Opaque | Monoclinic | 0.005 | |
---|
30 | Iron | 4.5 | Iron-black | Opaque | Isometric | 0.004 | |
---|
31 | Cordierite | 7.0 - 7.5 | Grey, blue, blue-violet, greenish, yellowish brown, colourless to very light blue in transmitted light. | Transparent, Translucent | Orthorhombic | 0.004 | |
---|
32 | Hydroxylherderite | 5.0 - 5.5 | Colorless, gray, brown, pale yellow, greenish white, light blue, purple, colourless in transmitted light. | Transparent, Translucent | Monoclinic | 0.004 | |
---|
33 | Edenite | 5.0 - 6.0 | White, grey, pale to dark green, also brown and pale pinkish-brown | | Monoclinic | 0.004 | |
---|
34 | Actinolite | 5.0 - 6.0 | Green, green-black, grey-green, or black | Transparent, Translucent | Monoclinic | 0.004 | |
---|
35 | Fergusonite-(Y) | 5.5 - 6.5 | Grey, yellow, brown | Opaque | Tetragonal | 0.004 | |
---|
36 | Rhodonite | 5.5 - 6.5 | Red, pink, brownish-red, gray. | Transparent, Translucent | Triclinic | 0.004 | |
---|
37 | Forsterite | 7.0 | Green, pale yellow or white. | Transparent, Translucent | Orthorhombic | 0.004 | |
---|
38 | Ilvaite | 5.5 - 6.0 | Iron-black, dark grayish black | Opaque | Orthorhombic | 0.004 | |
---|
39 | Chondrodite | 6.0 - 6.5 | Yellow, Red or Brown. | Transparent, Translucent | Monoclinic | 0.004 | |
---|
40 | Topaz | 8.0 | Colourless, white, pale blue, light green, yellow, yellowish brown, or red | Transparent, Translucent | Orthorhombic | 0.004 | |
---|
41 | Platinum | 4.0 - 4.5 | Steel grey to dark grey | Opaque | Isometric | 0.004 | |
---|
42 | Sulphur | 1.5 - 2.5 | Yellow, sulphur-yellow, brownish or greenish yellow, orange, white | Transparent, Translucent | Orthorhombic | 0.003 | |
---|
43 | Goethite | 5.0 - 5.5 | brownish black, yellow-brown, reddish brown | Opaque | Orthorhombic | 0.003 | |
---|
44 | Brannerite | 4.5 - 5.5 | Black, brownish olive-green, yellow-brown to yellow with alteration, yellowish green in transmitted light | Opaque | Monoclinic | 0.003 | |
---|
45 | Becquerelite | 2.5 | Amber-yellow, golden to lemon-yellow, yellow-orange, brownish yellow, yellow in transmitted light | Transparent | Orthorhombic | 0.003 | |
---|
46 | Xenotime-(Y) | 4.0 - 5.0 | Yellowish brown, reddish, brown, light red, flesh-red, light green, gray, grayish-white, wine-yellow | Translucent, Opaque | Tetragonal | 0.003 | |
---|
47 | Franklinite | 5.5 - 6.0 | Black | Opaque | Isometric | 0.003 | |
---|
48 | Microcline | 6.0 - 6.5 | White, grey, greyish yellow, yellowish, tan, salmon-pink, bluish green, green. | Transparent, Translucent | Triclinic | 0.003 | |
---|
49 | Loparite-(Ce) | 5.5 | | | | 0.003 | |
---|
50 | Thorianite | 6.5 - 7.0 | Dark grey, brown-black | | Isometric | 0.003 | |
---|
51 | Cobaltite | 5.5 | Reddish silver white, violet steel gray, or black. | Opaque | Orthorhombic | 0.003 | |
---|
52 | Hauerite | 4.0 | Reddish-brown/black | Opaque | Isometric | 0.003 | |
---|
53 | Sillimanite | 6.5 - 7.5 | Colorless, white, yellow, brown, green, gray. | Transparent, Translucent | Orthorhombic | 0.003 | |
---|
54 | Quartz | 7.0 | Colorless, purple, rose, red, black, yellow, brown, green, blue, orange, etc. | Transparent, Translucent | Trigonal | 0.003 | |
---|
55 | Polycrase-(Y) | 5.0 - 6.0 | Black | | Orthorhombic | 0.003 | |
---|
56 | Orthoclase | 6.0 | Colorless to white, Greenish white, Grayish yellow, Pale pink | Transparent, Translucent | Monoclinic | 0.003 | |
---|
57 | Chalcopyrite | 3.5 - 4.0 | Brass yellow, often with an iridescent tarnish. | Opaque | Tetragonal | 0.002 | |
---|
58 | Bismuth | 2.0 - 2.5 | Reddish-white to creamy-white, tarnishes iridescent pinkish, yellowish or bluish | Opaque | Trigonal | 0.002 | |
---|
59 | Piemontite | 6.0 - 6.5 | Red, red-violet, red-brown to reddish black | Translucent, Opaque | Monoclinic | 0.002 | |
---|
60 | Mellite | 2.0 - 2.5 | Honey to wax yellow, brown to reddish, gray, seldom white, colourless to pale yellow in transmitted light. | Transparent, Translucent | Tetragonal | 0.002 | |
---|
61 | Gold | 2.5 - 3.0 | Rich yellow, paling to whitish-yellow with increasing silver, blue & green in transmitted light (only thinnest folia [gold leaf]) | Opaque | Isometric | 0.002 | |
---|
62 | Marcasite | 6.0 - 6.5 | Pale brass-yellow, tin-white on fresh exposures. | Opaque | Orthorhombic | 0.002 | |
---|
63 | Eudialyte | 5.0 - 6.0 | Variable: Carmine-red, orange-red, orange, pink, cherry-red, brownish-red, yellowish-brown, brown, yellow, violet, green. | Translucent | Trigonal | 0.002 | |
---|
64 | Willemite | 5.5 | Colorless, white, pastel green, apple-green, light blue, azure-blue, yellow, burgundy-red, brown, mahogany-brown, gray, black, pink | Transparent, Translucent | Trigonal | 0.002 | |
---|
65 | Diopside | 5.5 - 6.5 | light to dark green, blue, brown, colourless, snow white, grey, pale violet | Transparent, Opaque | Monoclinic | 0.002 | |
---|
66 | Marialite | 5.5 - 6.0 | Bluish, Brownish, Colorless, Violet, Greenish | Transparent, Translucent | Tetragonal | 0.002 | |
---|
67 | Pyrite | 6.0 - 6.5 | Pale brass-yellow | Opaque | Isometric | 0.002 | |
---|
68 | Elbaite | 7.5 | Green, red to pink, blue, orange, yellow, colourless | Transparent, Translucent | Trigonal | 0.002 | |
---|
69 | Magnesite | 3.5 - 4.5 | Colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose, colourless in transmitted light. | Transparent, Translucent | Trigonal | 0.002 | |
---|
70 | Thorite | 4.5 | Yellow, yellow-brown, red-brown, green, orange to black | Opaque | Tetragonal | 0.002 | |
---|
71 | Natrojarosite | 2.5 - 3.5 | Yellow, golden brown, red-brown | Transparent, Translucent | Trigonal | 0.002 | |
---|
72 | Dravite | 7.0 | Pale brown to dark-brown to brownish-black, also dark-yellow, blue. | Transparent, Translucent | Trigonal | 0.002 | |
---|
73 | Talc | 1.0 | Colorless, white, pale green, bright emerald-green to dark green, brown, gray | Transparent, Translucent | Triclinic | 0.002 | |
---|
74 | Schorl | 7.0 | Bluish-black to black, sometimes brownish-black, rarely greenish-black. | Translucent, Opaque | Trigonal | 0.002 | |
---|
75 | Ferberite | 4.0 - 4.5 | Black, dark brown in transmitted light | Opaque | Monoclinic | 0.002 | |
---|
76 | Stichtite | 1.5 - 2.0 | Rose-pink to purple | Transparent | Trigonal | 0.002 | |
---|
77 | Columbite-(Fe) | 6.0 | Black to brownish black | Opaque | Orthorhombic | 0.002 | |
---|
78 | Lazurite | 5.0 - 5.5 | ultramarine, midnight blue, bluish green, green | Opaque | Isometric | 0.002 | |
---|
79 | Pargasite | 5.0 - 6.0 | Light-brown, brown, greenish-brown to dark green and black. | | Monoclinic | 0.002 | |
---|
80 | Realgar | 1.5 - 2.0 | Dark red to orange-red | Transparent | Monoclinic | 0.002 | |
---|
81 | Crocoite | 2.5 - 3.0 | Orange, red, yellow, orange-red in transmitted light. | Transparent, Translucent | Monoclinic | 0.002 | |
---|
82 | Greenockite | 3.0 - 3.5 | Yellow to red. | Translucent | Hexagonal | 0.002 | |
---|
83 | Kutnohorite | 3.5 - 4.0 | White, pale rose, pink, light to medium brown | Translucent | Trigonal | 0.002 | |
---|
84 | Spinel | 7.5 - 8.0 | Black, blue, red, violet, green, brown, pink | Transparent, Translucent | Isometric | 0.002 | |
---|
85 | Chamosite | 3.0 | Green, grey-green, black | | Monoclinic | 0.002 | |
---|
86 | Arsenopyrite | 5.5 - 6.0 | Silver-white to steel-gray, may have a slight yellow appearance | Opaque | Monoclinic | 0.002 | |
---|
87 | Danburite | 7.0 - 7.5 | Pale yellow, yellowish-brown, colourless | Transparent, Translucent | Orthorhombic | 0.001 | |
---|
88 | Aenigmatite | 5.5 - 6.0 | Velvet-black | Translucent, Opaque | Triclinic | 0.001 | |
---|
89 | Cinnabar | 2.0 - 2.5 | Tint or shade of red, cochineal red, brownish red | Transparent, Translucent | Trigonal | 0.001 | |
---|
90 | Perovskite | 5.5 | Dark brown, black, red-brown, yellow shades | Transparent, Translucent | Orthorhombic | 0.001 | |
---|
91 | Sturmanite | 2.5 | Bright Yellow to amber | Transparent, Translucent | Trigonal | 0.001 | |
---|
92 | Pyroxmangite | 5.5 - 6.0 | Pink, red, brown | Transparent, Translucent | Triclinic | 0.001 | |
---|
93 | Vivianite | 1.5 - 2.0 | Colourless and transparent when fresh, quickly turning pale to deep blue, greenish-blue or bluish-green. | Transparent, Translucent | Monoclinic | 0.001 | |
---|
94 | Tilasite | 5.0 | Light gray, violet-gray, pinkish red (LÄngban), olive-green, apple-green (India), colourless or pale green in transmitted light. | Translucent | Monoclinic | 0.001 | |
---|
95 | Britholite-(Ce) | 5.5 | Brown, greenish brown, yellow, resin brown, black. | | Hexagonal | 0.001 | |
---|
96 | Aeschynite-(Y) | 5.0 - 6.0 | Pale yellow, yellow-orange, pale greenish yellow, black, brownishblack | Transparent, Translucent | Orthorhombic | 0.001 | |
---|
97 | Roselite | 3.5 | Rose-red, pink, rose coloured in transmitted light. | Transparent, Translucent | Monoclinic | 0.001 | |
---|
98 | Germanite | 4.0 | Pale greyish-pink | Opaque | Isometric | 0.001 | |
---|
99 | Bustamite | 5.5 - 6.5 | Pale to medium pink, brownish red, colourless to yellowish pink in transmitted light | Transparent, Translucent | Triclinic | 0.001 | |
---|
100 | Vonsenite | 5.0 | Black, greenish black | Opaque | Orthorhombic | 0.001 | |
---|