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 481–600 of 4900 rare entries (page 5 of 41).
- No imageBøgvaditeraremineral · Mohs 3.5colorless, white
Bohdanowicziteraremineral · Mohs 2.5lead-gray, grayish-white- No imageBohseiteraremineral · Mohs 5.5white, colorless, yellowish
- No imageBohuslaviteraremineral · Mohs 2white, yellowish-white
Bokiteraremineral · Mohs 4black
Boleiteraremineral · Mohs 3-3.5indigo blue, dark blue
Bolivariteraremineral · Mohs 2.5yellow, greenish-yellow, white
Boltwooditeraremineral · Mohs 3.5yellow, golden yellow
Bonaccorditeraremineral · Mohs 6dark brown, brownish black
Bonacinaiteraremineral · Mohs 3-4white, colorless
Bonattiteraremineral · Mohs 2white, blue, pale blue
Bonazziiteraremineral · Mohs 1.5-2orange, reddish-orange- No imageBonshtedtiteraremineral · Mohs 3colorless, white, yellow
Boothiteraremineral · Mohs 2blue- No imageBoralsiliteraremineral · Mohs 7colorless, white
Borcariteraremineral · Mohs 4white, colorless- No imageBorisenkoiteraremineral · Mohs 4dark green, black
Bornemaniteraremineral · Mohs 3-4yellow, yellowish-brown, golden-yellow- No imageBornhardtiteraremineral · Mohs 4.5-5pinkish-white, gray
Borocookeiteraremineral · Mohs 2-2.5white, colorless, pale pink- No imageBorodaeviteraremineral · Mohs 3silver-white, lead-gray
- No imageBoromulliteraremineral · Mohs 7white, colorless, gray
Boromuscoviteraremineral · Mohs 2.5-3colorless, white, pale yellow
Borovskiteraremineral · Mohs 3-4white, gray- No imageBortnikoviteraremineral · Mohs 3.5white, silver-white
- No imageBoscardiniteraremineral · Mohs 3-3.5black, dark gray
Bosiiteraremineral · Mohs 7dark red, brownish red- No imageBostwickiteraremineral · Mohs 2.5-3dark brown, reddish-brown
Botallackiteraremineral · Mohs 3bright green, bluish green
Bottinoiteraremineral · Mohs 2colorless, white- No imageBouazzeriteraremineral · Mohs 3-4yellow, yellowish-orange
- No imageBouškaiteraremineral · Mohs 2yellow, yellowish-orange
Bowieiteraremineral · Mohs 3.5-4gray, white
Boyleiteraremineral · Mohs 2.5white, colorless
Braccoiteraremineral · Mohs 3.5yellow, brown
Bracewelliteraremineral · Mohs 6-7dark brown, black
Brackebuschiteraremineral · Mohs 3.5black, dark brown- No imageBradaczekiteraremineral · Mohs 3blue, greenish-blue
Bradleyiteraremineral · Mohs 3-3.5white, colorless, gray
Braggiteraremineral · Mohs 4-5steel-gray, silver-white- No imageBraithwaiteiteraremineral · Mohs 2yellow, yellowish-orange
- No imageBraitschite-(Ce)raremineral · Mohs 3white, yellow, colorless
- No imageBranchiteraremineral · Mohs 1.5-2white, colorless, yellowish
- No imageBrandãoiteraremineral · Mohs 3.5green, blue-green
Brandholziteraremineral · Mohs 2white, colorless
Brandtiteraremineral · Mohs 3-4white, colorless, pale yellow
Branneriteraremineral · Mohs 4.5black, dark brown
Brannockiteraremineral · Mohs 5colorless, white, pale yellow
Brassiteraremineral · Mohs 2yellow, yellowish-white- No imageBrauneriteraremineral · Mohs 3.5-4brown, yellowish-brown
Bredigiteraremineral · Mohs 5.5-6colorless, white, gray
Breithauptiteraremineral · Mohs 5.5copper-red, red-brown
Brendeliteraremineral · Mohs 3.5yellowish-white, colorless, pale yellow
Brenkiteraremineral · Mohs 3.5colorless, white, pale yellow
Brewsterite-Bararemineral · Mohs 5white, yellow, gray
Breyiteraremineral · Mohs 7-7.5colorless, white- No imageBrezinaiteraremineral · Mohs 3.5-4bronze, brown
Brianiteraremineral · Mohs 3.5white, colorless, pale yellow- No imageBrianroulstoniteraremineral · Mohs 3.5colorless, white
Brianyoungiteraremineral · Mohs 2white, colorless
Briartiteraremineral · Mohs 3-3.5steel-gray, grayish-white
Bridgmaniteraremineral · Mohs 6-6.5brown, yellow-brown
Brindleyiteraremineral · Mohs 2.5green, pale green, yellowish green
Brinrobertsiteraremineral · Mohs 1-2white, pale yellow
Britholite-(Ce)raremineral · Mohs 5.5brown, tan, reddish-brown
Britholite-(Y)raremineral · Mohs 5-5.5brown, yellow, gray
Britviniteraremineral · Mohs 3-4colorless, white, pale yellow
Brizziiteraremineral · Mohs 2colorless, white
Brockiteraremineral · Mohs 3-4pink, reddish-brown, white- No imageBrodtkorbiteraremineral · Mohs 3.5white, gray
Bromargyriteraremineral · Mohs 2-2.5yellow, greenish-yellow, brownish-green
Bromelliteraremineral · Mohs 9white, colorless- No imageBrontesiteraremineral · Mohs 2-3gray, white
- No imageBrowneiteraremineral · Mohs 3-4yellowish-brown
- No imageBrownleeiteraremineral · Mohs 3.5-4yellow, brownish-yellow
Brownmilleriteraremineral · Mohs 5-6dark brown, brownish black
Brüggeniteraremineral · Mohs 3.5colorless, white- No imageBrugnatelliteraremineral · Mohs 2pale pink, pale brownish, pale yellow
- No imageBrumadoiteraremineral · Mohs 3yellow, greenish-yellow
Brunogeieriteraremineral · Mohs 5-6black- No imageBubnovaiteraremineral · Mohs 3colorless, white
- No imageBuchwalditeraremineral · Mohs 3.5yellow, brown, colorless
- No imageBuckhorniteraremineral · Mohs 2.5black, gray
Buddingtoniteraremineral · Mohs 5.5white, colorless, gray
Bukoviteraremineral · Mohs 2.5-3dark gray, white
Bukovskýiteraremineral · Mohs 2.5yellowish-green, yellow, pale green
Bulachiteraremineral · Mohs 2-3white, colorless- No imageBulgakiteraremineral · Mohs 3.5white, colorless, yellowish
Bultfonteiniteraremineral · Mohs 4.5white, colorless, pink
Bunnoiteraremineral · Mohs 1-2yellow, orange-yellow
Bunseniteraremineral · Mohs 5.5dark green, yellowish green
Burangaiteraremineral · Mohs 4blue, sky-blue
Burbankiteraremineral · Mohs 3.5yellow, pink, white
Burckhardtiteraremineral · Mohs 2yellow, brownish-yellow- No imageBurgessiteraremineral · Mohs 2pink, pale pink
Burkeiteraremineral · Mohs 3.5white, gray, pale yellow- No imageBurnettiteraremineral · Mohs 6-7dark blue, blue-black
- No imageBurnsiteraremineral · Mohs 3white, colorless, pale yellow
- No imageBurovaite-Cararemineral · Mohs 5yellow, brownish-yellow, pale yellow
Burpaliteraremineral · Mohs 5.5colorless, white, pale yellow
Burtiteraremineral · Mohs 3.5colorless, white
Buryatiteraremineral · Mohs 3.5white, colorless- No imageBuseckiteraremineral · Mohs 3.5-4black, brown
- No imageBushmakiniteraremineral · Mohs 3-4yellow, greenish-yellow, olive-green
- No imageBusseniteraremineral · Mohs 3-4yellow, brown
Bussyite-(Ce)raremineral · Mohs 5-6yellow, yellowish-brown, brown- No imageBussyite-(Y)raremineral · Mohs 5yellow, brown, colorless
Butleriteraremineral · Mohs 2.5orange, yellow-orange
Bütschliiteraremineral · Mohs 2.5white, colorless, pale yellow
Buttgenbachiteraremineral · Mohs 3blue, deep blue
Byelorussite-(Ce)raremineral · Mohs 4-5yellow, brown- No imageBykovaiteraremineral · Mohs 4yellow, brown, yellowish-brown
- No imageByruditeraremineral · Mohs 5.5colorless, white, gray
Bystriteraremineral · Mohs 5-6yellow, greenish-yellow
Byströmiteraremineral · Mohs 4-5yellow, yellow-orange, colorless- No imageByzantieviteraremineral · Mohs 4-5yellowish-brown, brown
Cabalzariteraremineral · Mohs 3.5yellow, orange-yellow
Cabriiteraremineral · Mohs 3.5-4pinkish-white, bright metallic- No imageCabviniteraremineral · Mohs 4white, colorless
- No imageCacotrichiteraremineral · Mohs 5-5.5yellow, golden-yellow, brown
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