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 3601–3720 of 4900 rare entries (page 31 of 41).
- No imagePretuliteraremineral · Mohs 4-5colorless, white
- No imagePrewittiteraremineral · Mohs 2-3orange, orange-red
- No imagePříbramiteraremineral · Mohs 3-3.5gray, white
Prideriteraremineral · Mohs 6black, brownish-black
Pringleiteraremineral · Mohs 3.5yellow, brown
Prismatineraremineral · Mohs 6.5-7green, brown, blue
Proshchenkoite-(Y)raremineral · Mohs 5yellowish-brown, brown
Prosopiteraremineral · Mohs 4.5white, colorless, gray- No imageProsperiteraremineral · Mohs 3.5white, colorless
- No imageProtasiteraremineral · Mohs 2.5orange, reddish-orange
Proto-anthophylliteraremineral · Mohs 5.5-6gray, brown, green- No imageProto-ferro-anthophylliteraremineral · Mohs 5-6brown, greenish-brown, dark gray
Proto-ferro-suenoiteraremineral · Mohs 5-6brownish-yellow, pale brown
Protochabournéiteraremineral · Mohs 2.5black, lead-gray- No imageProtoenstatiteraremineral · Mohs 5.5colorless, white, gray
Prouditeraremineral · Mohs 2-3lead-gray, black
Proustiteraremineral · Mohs 2-2.5scarlet-red, vermilion- No imageProxidecagoniteraremineral · Mohs 6-7silver, gray
Przhevalskiteraremineral · Mohs 3-4yellow, yellowish-orange
Pseudoboleiteraremineral · Mohs 2.5-3deep blue, azure
Pseudocotunniteraremineral · Mohs 2-3yellow, white, colorless- No imagePseudograndreefiteraremineral · Mohs 2colorless, white
- No imagePseudojohanniteraremineral · Mohs 2-3yellow, greenish-yellow
Pseudolaueiteraremineral · Mohs 3yellow, brownish-yellow, pale brown- No imagePseudolyonsiteraremineral · Mohs 3yellow, brownish-yellow
- No imagePseudomarkeyiteraremineral · Mohs 3white, colorless, gray
- No imagePseudomeisserite-(NH4)raremineral · Mohs 2colorless, white
- No imagePseudomertieiteraremineral · Mohs 3.5white, pale yellow
- No imagePseudosinhaliteraremineral · Mohs 6.5colorless, white, pale yellow
Pseudowollastoniteraremineral · Mohs 4.5-5white, colorless, gray
Pucheriteraremineral · Mohs 3-4red, orange, brownish-red
Pumpellyite-(Mn2+)raremineral · Mohs 6brownish red, brown, reddish brown- No imagePuniniteraremineral · Mohs 3.5-4yellow, brownish-yellow
- No imagePunkaruaiviteraremineral · Mohs 5yellow, brownish-yellow, pale brown
- No imagePurple Garnetraregemstone · Mohs 6.5-7.5purple, violet, reddish-purple
- No imagePushcharovskiteraremineral · Mohs 2green, blue-green
Putnisiteraremineral · Mohs 1.5-2pink, violet, purple- No imagePutoraniteraremineral · Mohs 3.5bronze, brownish-yellow
- No imagePutziteraremineral · Mohs 2.5-3gray, silver-white
- No imagePyatenkoite-(Y)raremineral · Mohs 4yellow, brown, white
- No imagePyracmoniteraremineral · Mohs 2white, colorless
Pyrobeloniteraremineral · Mohs 3.5dark red, orange-red, brownish-red
Pyrophaniteraremineral · Mohs 5-6red, reddish-brown
Pyrosmalite-(Fe)raremineral · Mohs 4.5brown, dark brown, yellowish-brown
Pyrosmalite-(Mn)raremineral · Mohs 4-4.5brown, brownish-red, yellowish-brown
Pyrostilpniteraremineral · Mohs 2hyacinth-red, orange-red
Pyroxferroiteraremineral · Mohs 5.5brown, amber, tan
Pyroxmangiteraremineral · Mohs 5.5-6pink, reddish-brown, brown
Qandiliteraremineral · Mohs 6black, dark brown- No imageQaqarssukite-(Ce)raremineral · Mohs 4-4.5colorless, white, yellowish-white
Qilianshaniteraremineral · Mohs 2white, colorless
Qingheiiteraremineral · Mohs 5yellow, yellowish green, brown- No imageQingsongiteraremineral · Mohs 9.5-10dark green, black, brownish
- No imageQitianlingiteraremineral · Mohs 5-6black, brownish black
Quadratiteraremineral · Mohs 3.5red, brownish-red- No imageQuadridavyneraremineral · Mohs 6colorless, white
- No imageQuadruphiteraremineral · Mohs 4-5yellow, brown, colorless
Quatrandoriteraremineral · Mohs 3-3.5lead-gray, blackish-gray
Queititeraremineral · Mohs 3.5colorless, white, pale yellow
Quenseliteraremineral · Mohs 2.5black, dark gray
Quenstedtiteraremineral · Mohs 2.5violet, pale lilac, yellowish
Quetzalcoatliteraremineral · Mohs 3yellow, yellowish-green, light green- No imageQuijarroiteraremineral · Mohs 3-3.5steel-gray, white
Quintiniteraremineral · Mohs 2white, colorless, yellow- No imageQusongiteraremineral · Mohs 8.5-9silver-gray
- No imageRaadeiteraremineral · Mohs 4-5yellow, brown, colorless
Rabbittiteraremineral · Mohs 2pale yellow, greenish yellow
Rabejaciteraremineral · Mohs 2.5yellow, bright yellow- No imageRaberiteraremineral · Mohs 2.5black
- No imageRadekškodaite-(La)raremineral · Mohs 6-7dark brown, black
- No imageRadhakrishnaiteraremineral · Mohs 2-3white, gray
Radiumraremineral · Mohs approx 2silvery-white, blackened-by-oxidation- No imageRadovaniteraremineral · Mohs 3yellow, brownish-yellow
- No imageRadtkeiteraremineral · Mohs 1.5-2orange, red-orange
Raguiniteraremineral · Mohs 2dark gray, black
Raisaiteraremineral · Mohs 2.5blue, deep blue
Raiteraremineral · Mohs 2-3yellow, brown, orange-yellow
Rajiteraremineral · Mohs 3.5colorless, white
Rakovaniteraremineral · Mohs 2-3dark red, reddish-brown
Ralphcannoniteraremineral · Mohs 3.5steel-gray, black
Ramaccioniiteraremineral · Mohs 2-3yellow, yellow-green- No imageRamanite-(Cs)raremineral · Mohs 6-7yellow, brown, colorless
- No imageRamanite-(Rb)raremineral · Mohs 3.5brown, yellowish-brown
- No imageRamazzoiteraremineral · Mohs 2blue, deep blue
Rambergiteraremineral · Mohs 3-4pink, red, brown
Ramdohriteraremineral · Mohs 2.5steel-gray, lead-gray, silver-white- No imageRameauiteraremineral · Mohs 2-3orange, yellow-orange
Ramikite-(Y)raremineral · Mohs 4.5yellow, brownish-yellow, brown
Ramsbeckiteraremineral · Mohs 3bright green, dark green
Rankachiteraremineral · Mohs 2yellow, yellowish-green
Rankamaiteraremineral · Mohs 3-4yellow, colorless, white
Rankiniteraremineral · Mohs 5.5colorless, white
Ransomiteraremineral · Mohs 2.5blue, pale blue
Ranunculiteraremineral · Mohs 2-3yellow, bright yellow
Rapidcreekiteraremineral · Mohs 2white, colorless
Rappolditeraremineral · Mohs 4-5white, colorless, pale yellow
Raslakiteraremineral · Mohs 5-6yellow, brown, pink
Raspiteraremineral · Mohs 2.5-3yellow, yellowish-brown, brown
Rastsvetaeviteraremineral · Mohs 5-6pink, reddish-brown
Rasvumiteraremineral · Mohs 3black, dark brown
Rathiteraremineral · Mohs 3lead-gray, black
Rathite-IVraremineral · Mohs 3lead-gray, black
Rauchiteraremineral · Mohs 2-3yellow, yellow-green
Rauenthaliteraremineral · Mohs 2white, colorless
Rauviteraremineral · Mohs nonepurple, reddish-purple, dark violet
Ravatiteraremineral · Mohs 1.5colorless, white- No imageRaygrantiteraremineral · Mohs 3white, colorless
Rayiteraremineral · Mohs 3dark gray, lead-gray, black- No imageReaphookhilliteraremineral · Mohs 2yellow, pale yellow
Rebuliteraremineral · Mohs 2red, orange
Red Berylraregemstone · Mohs 7.5-8red, raspberry-red
Red Cassiteriteraremineral · Mohs 6-7red, brown, black- No imageRed Pearlrarefossil · Mohs 2.5-4red, pink, brownish-red
Reddingiteraremineral · Mohs 3-3.5pink, brownish-pink, yellowish-white- No imageRedgilliteraremineral · Mohs 3green, yellow-green
Redingtoniteraremineral · Mohs 2pink, red, violet-red
Redledgeiteraremineral · Mohs 6-7red, brown, black
Redonditeraremineral · Mohs 3.5-4.5yellow, green, white- No imageReederite-(Y)raremineral · Mohs 3.5yellow, yellow-brown, brown
Reedmergneriteraremineral · Mohs 6colorless, white
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