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 2641–2760 of 4900 rare entries (page 23 of 41).
Makarochkiniteraremineral · Mohs 6-7dark brown, black
Makatiteraremineral · Mohs 3-4white, colorless
Mäkineniteraremineral · Mohs 2black, dark brown
Makovickyiteraremineral · Mohs 3-3.5lead-gray, tin-white
Malaniteraremineral · Mohs 5-6gray, white
Malayaiteraremineral · Mohs 5-6yellow, brown, greenish yellow
Maldoniteraremineral · Mohs 1.5-2pinkish-white, silver-white, yellowish-white- No imageMaleeviteraremineral · Mohs 6.5-7colorless, white, pale yellow
Malhmooditeraremineral · Mohs 2.5-3yellow, brownish yellow- No imageMalinkoiteraremineral · Mohs 5colorless, white
Malladriteraremineral · Mohs 2colorless, white- No imageMallarditeraremineral · Mohs 2colorless, white, yellowish
Mallestigiteraremineral · Mohs 3-3.5white, colorless, pale yellow- No imageMalysheviteraremineral · Mohs 3.5green, yellowish-green
- No imageMambertiiteraremineral · Mohs 2yellow, pale yellow
Mammothiteraremineral · Mohs 2.5white, colorless, pale yellow- No imageManaevite-(Ce)raremineral · Mohs 6-7brown, dark brown
Manaksiteraremineral · Mohs 5-6pink, reddish-pink
Manandoniteraremineral · Mohs 2.5white, colorless, pale pink
Mandarin Garnetraregemstone · Mohs 7-7.5orange, reddish-orange
Mandarinoiteraremineral · Mohs 2yellow, yellow-green- No imageManeckiiteraremineral · Mohs 4pale yellow, yellowish-white
Manganarsiteraremineral · Mohs 2yellow, yellow-brown
Manganbabingtoniteraremineral · Mohs 5.5-6black, brownish-black- No imageManganbelyankiniteraremineral · Mohs 4-5brown, yellowish-brown
Manganberzeliiteraremineral · Mohs 5yellow, brownish yellow, orange
Manganeseraremineral · Mohs 2silvery-gray, iron-black- No imageManganflurliteraremineral · Mohs 4-4.5yellow, brownish-yellow, orange-brown
Mangangordoniteraremineral · Mohs 3.5pink, pale pink, colorless
Manganhumiteraremineral · Mohs 6-6.5yellow, yellowish-brown, brown- No imageMangani-dellaventuraiteraremineral · Mohs 6dark brown, reddish-brown
- No imageMangani-obertiiteraremineral · Mohs 5-6dark brown, reddish brown
Mangani-pargasiteraremineral · Mohs 5-6dark green, black, brownish-black
Manganiakasakaite-(La)raremineral · Mohs 6-7black, brownish-black- No imageManganiandrosite-(Ce)raremineral · Mohs 6-6.5brown, black
- No imageManganiandrosite-(La)raremineral · Mohs 6-7black, brownish-black
- No imageManganiceladoniteraremineral · Mohs 2green, blue-green
- No imageManganilvaiteraremineral · Mohs 5.5-6black, brownish-black
- No imageManganlotharmeyeriteraremineral · Mohs 4.5yellow, yellowish-orange, brown
Mangano-ferri-eckermanniteraremineral · Mohs 5-6dark green, black, bluish green
Mangano-mangani-ungarettiiteraremineral · Mohs 6dark brown, reddish-brown
Manganoblöditeraremineral · Mohs 3yellow, yellow-orange, brown
Manganochromiteraremineral · Mohs 5.5black, brownish-black
Manganoeudialyteraremineral · Mohs 5-6pink, red, magenta
Manganohörnesiteraremineral · Mohs 2pink, pale pink, colorless- No imageManganokaskasiteraremineral · Mohs 3-4black, dark brown
Manganokhomyakoviteraremineral · Mohs 5-6brown, reddish-brown, yellowish-brown- No imageManganokukisvumiteraremineral · Mohs 5pink, pale pink
Manganolangbeiniteraremineral · Mohs 3.5-4pink, pale pink, colorless- No imageManganonaujakasiteraremineral · Mohs 2.5pink, pale red, colorless
Manganoneptuniteraremineral · Mohs 5-6black, dark brown
Manganonordite-(Ce)raremineral · Mohs 5-5.5colorless, white, yellowish- No imageManganoquadratiteraremineral · Mohs 3colorless, white, gray
Manganosegeleriteraremineral · Mohs 4yellow, brown, pinkish-brown
Manganositeraremineral · Mohs 5-6emerald green, grass green, black
Manganostibiteraremineral · Mohs 3.5-4red, dark red, brownish-red
Manganotychiteraremineral · Mohs 4yellow, yellowish-brown, colorless
Manganvesuvianiteraremineral · Mohs 6.5red, pink, brown- No imageMangazeiteraremineral · Mohs 3white
- No imageManitobaiteraremineral · Mohs 3-4yellow, brown
Manjiroiteraremineral · Mohs 6-6.5black, brownish black
Mannarditeraremineral · Mohs 3-4black, brownish-black
Mansfielditeraremineral · Mohs 3.5-4white, colorless, pale yellow
Mantienneiteraremineral · Mohs 4yellow, yellowish-brown, light brown
Maohokiteraremineral · Mohs 8-9dark green, black- No imageMaoniupingite-(Ce)raremineral · Mohs 4-4.5yellowish-brown, reddish-brown
Mapimiteraremineral · Mohs 2yellow, brownish-yellow- No imageMapiquiroiteraremineral · Mohs 6black, dark brown
Marchettiiteraremineral · Mohs 2yellow, brownish-yellow- No imageMarcobaldiiteraremineral · Mohs 3dark gray, lead gray
- No imageMarécottiteraremineral · Mohs 2-3yellow, orange-yellow
- No imageMargaritasiteraremineral · Mohs 2-3yellow, golden yellow
Margarosaniteraremineral · Mohs 2.5-3white, colorless, pale blue
Marićiteraremineral · Mohs 4-5colorless, white, gray
Maricopaiteraremineral · Mohs 1-2white, colorless
Mariinskiteraremineral · Mohs 8.5green, emerald-green
Marinelliteraremineral · Mohs 5-6white, colorless- No imageMarkascheriteraremineral · Mohs 3.5dark brown, black, reddish-brown
- No imageMarkcooperiteraremineral · Mohs 3-4yellow, yellow-brown
- No imageMarkhininiteraremineral · Mohs 1.5-2white, colorless, grayish
- No imageMarkliteraremineral · Mohs 3-3.5white, colorless, yellowish
Marokiteraremineral · Mohs 6.5black, dark brown
Marriteraremineral · Mohs 3dark gray, black- No imageMarrucciiteraremineral · Mohs 2lead-gray, black
Marshiteraremineral · Mohs 2.5red, brownish-red, colorless
Marsturiteraremineral · Mohs 5.5-6pink, brownish-pink
Marthoziteraremineral · Mohs 3green, yellow-green
Martinandresiteraremineral · Mohs 3-4colorless, white, yellow
Martiniteraremineral · Mohs 6colorless, white, pale yellow- No imageMartyiteraremineral · Mohs 3.5-4orange, reddish-orange, yellow
- No imageMarumoiteraremineral · Mohs 3lead-gray, black
- No imageMaruyamaiteraremineral · Mohs 7pale yellow, yellowish-brown
Masloviteraremineral · Mohs 4.5-5white, gray
Massicotraremineral · Mohs 2yellow, orange, reddish-yellow
Masutomiliteraremineral · Mohs 2.5-3pale pink, violet, lilac
Masuyiteraremineral · Mohs 3-4orange, red, reddish-orange
Mathesiusiteraremineral · Mohs 2.5yellow, greenish-yellow- No imageMathewrogersiteraremineral · Mohs 2pale yellow, yellowish-white
Mathiasiteraremineral · Mohs 6-7black
Matioliiteraremineral · Mohs 5white, colorless, light blue
Matlockiteraremineral · Mohs 2.5-3yellow, colorless, white- No imageMatsubaraiteraremineral · Mohs 5-6brown, black
- No imageMattagamiteraremineral · Mohs 3.5white, gray
Matteucciteraremineral · Mohs 2colorless, white
Mattheddleiteraremineral · Mohs 3.5colorless, white, yellow
Matulaiteraremineral · Mohs 2.5-3white, colorless, pale yellow- No imageMatyhiteraremineral · Mohs 3.5-4yellow, brownish-yellow
Maucheriteraremineral · Mohs 5copper-red, silver-white, gray- No imageMavlyanoviteraremineral · Mohs 4white, gray
Mawbyiteraremineral · Mohs 3-4red, brownish-red, orange-red
Mawsoniteraremineral · Mohs 3.5orange, reddish-orange, brownish-yellow
Maxwelliteraremineral · Mohs 4white, colorless, yellowish- No imageMayingiteraremineral · Mohs 3-3.5white, gray
- No imageMazzettiiteraremineral · Mohs 2.5-3black, gray
Mazzite-Mgraremineral · Mohs 4white, colorless- No imageMazzite-Nararemineral · Mohs 3.5-4colorless, white
Mbobomkuliteraremineral · Mohs 2blue, greenish-blue
Mcallisteriteraremineral · Mohs 2colorless, white, yellow
Mcalpineiteraremineral · Mohs 3.5green, yellow-green
Mcauslaniteraremineral · Mohs 3blue, greenish-blue, colorless
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