Rare rocks & minerals
Rare rocks and minerals occur in only a handful of localities worldwide, or in such small quantities that good specimens command serious money. These are the trophy pieces of cabinet collectors.
Showing 1321–1440 of 4900 rare entries (page 12 of 41).
- No imageFerriperbøeite-(La)raremineral · Mohs 6-7black, brown
Ferripyrophylliteraremineral · Mohs 1-2yellow, brown, greenish-yellow- No imageFerrirockbridgeiteraremineral · Mohs 4.5dark green, blackish green, brown
- No imageFerrisepioliteraremineral · Mohs 2yellow, brown, greenish
Ferristrunziteraremineral · Mohs 3.5yellow, brownish-yellow, amber
Ferrisuriteraremineral · Mohs 2-3yellow, golden-yellow, brownish-yellow
Ferrisymplesiteraremineral · Mohs 2-3dark brown, brownish black, brown
Ferrivauxiteraremineral · Mohs 3.5yellow, brownish yellow- No imageFerro-ferri-fluoro-leakeiteraremineral · Mohs 6dark blue, black
Ferro-ferri-holmquistiteraremineral · Mohs 5-6dark violet, violet-blue, black
Ferro-ferri-katophoriteraremineral · Mohs 5-6black, dark brown, dark green- No imageFerro-ferri-nybøiteraremineral · Mohs 5-6dark blue, dark green, black
- No imageFerro-ferri-obertiiteraremineral · Mohs 5-6dark green, black
- No imageFerro-ferri-pedriziteraremineral · Mohs 5-6pale yellow, pale green
- No imageFerro-fluoro-edeniteraremineral · Mohs 5-6brown, dark green, black
- No imageFerro-fluoro-pedriziteraremineral · Mohs 5-6yellow, pale brown, colorless
Ferro-gedriteraremineral · Mohs 5-6dark brown, brownish black, gray
Ferro-glaucophaneraremineral · Mohs 6-6.5blue, blue-black, lavender- No imageFerro-holmquistiteraremineral · Mohs 5-6dark blue, violet, dark green
Ferro-katophoriteraremineral · Mohs 5-6black, dark brown, dark green- No imageFerro-pedriziteraremineral · Mohs 5-6dark green, black, brownish-black
Ferro-richteriteraremineral · Mohs 5-6brown, yellow-brown, greenish-brown
Ferro-taramiteraremineral · Mohs 5-6black, dark green- No imageFerroalluauditeraremineral · Mohs 4-5yellow, brown, green
Ferroaluminoceladoniteraremineral · Mohs 2green, bluish-green, brown- No imageFerrobobfergusoniteraremineral · Mohs 4.5-5brown, dark brown
Ferrobustamiteraremineral · Mohs 5.5-6white, yellowish, brownish
Ferrocarpholiteraremineral · Mohs 5straw-yellow, yellowish-green, brown- No imageFerrochiavenniteraremineral · Mohs 4white, colorless, pale yellow
- No imageFerroericssoniteraremineral · Mohs 4-5black, dark brown
Ferrohexahydriteraremineral · Mohs 2.5pale green, white- No imageFerrohögbomite-2N2Sraremineral · Mohs 6dark brown, black
Ferroindialiteraremineral · Mohs 7-7.5blue, colorless, gray
Ferrokentbrooksiteraremineral · Mohs 5-6red, brownish-red, pink
Ferrokësteriteraremineral · Mohs 3.5black, brownish-black- No imageFerrokinoshitaliteraremineral · Mohs 2.5-3yellow, brown, dark brown
- No imageFerrolaueiteraremineral · Mohs 3brown, orange-brown
- No imageFerromerrilliteraremineral · Mohs 5colorless, white, pale yellow
Ferronickelplatinumraremineral · Mohs 4white, silvery-white
Ferronigerite-2N1Sraremineral · Mohs 8-9brown, black, yellowish-brown- No imageFerronigerite-6N6Sraremineral · Mohs 8-9brown, reddish-brown
- No imageFerronordite-(Ce)raremineral · Mohs 5.5yellowish-white, pale yellow
- No imageFerronordite-(La)raremineral · Mohs 5-5.5yellow, brown, colorless
- No imageFerropseudobrookiteraremineral · Mohs 6black, brownish-black
- No imageFerroqingheiiteraremineral · Mohs 4dark green, black
- No imageFerrorockbridgeiteraremineral · Mohs 4.5dark brown, black, greenish black
- No imageFerrorosemaryiteraremineral · Mohs 4-4.5dark brown, black, yellow-brown
Ferrosaponiteraremineral · Mohs 2green, yellowish-green, brown
Ferroseliteraremineral · Mohs 2.5-3white, gray
Ferrosiliteraremineral · Mohs 5-6brown, dark brown, black- No imageFerroskutteruditeraremineral · Mohs 5.5-6tin-white, silver-white, gray
- No imageFerrostalderiteraremineral · Mohs 3.5-4black, gray
Ferrostrunziteraremineral · Mohs 3.5yellow, brownish-yellow, tan- No imageFerrotaaffeite-2N’2Sraremineral · Mohs 8colorless, violet, pale red
- No imageFerrotaaffeite-6N'3Sraremineral · Mohs 8blue, purple, colorless
- No imageFerrotitanowodginiteraremineral · Mohs 5-6black, brownish-black
- No imageFerrotochiliniteraremineral · Mohs 1-2black
Ferrotychiteraremineral · Mohs 4yellow, brown, colorless- No imageFerrovalleriiteraremineral · Mohs 1bronze, black, brown
- No imageFerrovorontsoviteraremineral · Mohs 3.5black, dark gray
Ferrowodginiteraremineral · Mohs 5.5-6black, brown
Ferrowyllieiteraremineral · Mohs 4-5green, yellow-green
Ferrucciteraremineral · Mohs 2colorless, white
Fersmaniteraremineral · Mohs 5.5brown, yellowish-brown, reddish-brown
Fersmiteraremineral · Mohs 4-4.5black, brownish-black, brown
Feruviteraremineral · Mohs 7-7.5black, brown
Fervaniteraremineral · Mohs 2.5-3yellow, brownish-yellow
Fetiasiteraremineral · Mohs 3-4dark brown, black
Fetteliteraremineral · Mohs 2.5dark red, black- No imageFeynmaniteraremineral · Mohs 2yellow, yellowish-green
- No imageFianeliteraremineral · Mohs 3.5yellow, orange-yellow
Fichteliteraremineral · Mohs 1white, colorless, yellowish
Fiedleriteraremineral · Mohs 2.5colorless, white, yellow
Fiemmeiteraremineral · Mohs 2colorless, white, pale yellow- No imageFilatoviteraremineral · Mohs 6colorless, white
Filipstaditeraremineral · Mohs 5-6black
Fillowiteraremineral · Mohs 4.5yellowish-brown, reddish-brown, yellow
Finchiteraremineral · Mohs 2-3orange, yellow-orange
Fingeriteraremineral · Mohs 3orange, red-orange
Finnemaniteraremineral · Mohs 2.5-3gray, white, colorless- No imageFire Pearlrarefossil · Mohs 2.5-4.5white, cream, iridescent
Fischesseriteraremineral · Mohs 2.5silver-white, pale yellow
Fivegiteraremineral · Mohs 4white, colorless, yellow
Fizélyiteraremineral · Mohs 2-2.5lead-gray, iron-black
Flagstaffiteraremineral · Mohs 1-2colorless, white, yellowish- No imageFlamiteraremineral · Mohs 3.5yellow, brown, colorless
- No imageFleischeriteraremineral · Mohs 3.5colorless, white, pale yellow
Fletcheriteraremineral · Mohs 4.5black, gray- No imageFlinkiteraremineral · Mohs 5brown, brownish-red, yellowish-brown
- No imageFlinteiteraremineral · Mohs 3.5white, yellow, brown
Florencite-(La)raremineral · Mohs 5-6white, colorless, yellow
Florencite-(Nd)raremineral · Mohs 5-6pink, brown, yellow- No imageFlorencite-(Sm)raremineral · Mohs 5-6yellow, brown, colorless
- No imageFlorenskyiteraremineral · Mohs 5-6white, gray
- No imageFlorensoviteraremineral · Mohs 5-6dark gray, black
Flörkeiteraremineral · Mohs 4-5white, colorless
Fluckiteraremineral · Mohs 3-4colorless, white, pale pink
Fluelliteraremineral · Mohs 3colorless, white
Fluoboriteraremineral · Mohs 3.5colorless, white, yellow
Fluocerite-(Ce)raremineral · Mohs 4.5-5yellow, reddish-yellow, brown- No imageFluocerite-(La)raremineral · Mohs 4.5-5red, yellow, brown
- No imageFluor-buergeriteraremineral · Mohs 7brown, dark brown
Fluor-draviteraremineral · Mohs 7-7.5brown, yellow-brown, dark brown
Fluor-elbaiteraremineral · Mohs 7-7.5pink, red, green
Fluor-liddicoatiteraremineral · Mohs 7-7.5multicolored, pink, green- No imageFluor-tsilaisiteraremineral · Mohs 7yellow, yellow-green
- No imageFluoranniteraremineral · Mohs 2.5-3brown, greenish-brown, yellowish-brown
- No imageFluorapophyllite-(Cs)raremineral · Mohs 4.5-5colorless, white, pinkish
- No imageFluorarrojadite-(BaFe)raremineral · Mohs 4-5green, brownish-green, yellowish-green
- No imageFluorbritholite-(Ce)raremineral · Mohs 5-5.5brown, reddish-brown, yellow
- No imageFluorbritholite-(Y)raremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageFluorcalciobritholiteraremineral · Mohs 5brown, yellow, gray
- No imageFluorcalciomicroliteraremineral · Mohs 5-5.5yellow, brown, reddish-brown
Fluorcalciopyrochloreraremineral · Mohs 5-5.5brown, yellowish-brown, reddish-brown
Fluorcalcioroméiteraremineral · Mohs 5.5yellow, brown, yellowish-brown- No imageFluorcanasiteraremineral · Mohs 5-6colorless, white, pinkish
Fluorcaphiteraremineral · Mohs 5colorless, white, pale yellow- No imageFluorcarmoite-(BaNa)raremineral · Mohs 5-6dark brown, dark green, black
- No imageFluorchegemiteraremineral · Mohs 5.5colorless, white, pale yellow
Fluorellestaditeraremineral · Mohs 5white, colorless, yellow
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