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 3121–3240 of 4900 rare entries (page 27 of 41).
Niedermayriteraremineral · Mohs 2orange, yellow-orange
Nielsbohriteraremineral · Mohs 3-4yellow, pale yellow- No imageNielseniteraremineral · Mohs 3.5white, silver-white
- No imageNieriteraremineral · Mohs 9gray, black, blue
Nifontoviteraremineral · Mohs 3.5colorless, white
Niggliiteraremineral · Mohs 1.5white, silver-white- No imageNiigataiteraremineral · Mohs 6-7pink, reddish-pink
Nikischeriteraremineral · Mohs 2yellow, brownish-yellow, pale brown- No imageNikmelnikoviteraremineral · Mohs 6.5-7dark brown, black
- No imageNiksergieviteraremineral · Mohs 3.5yellow, brown, white
Nimiteraremineral · Mohs 2.5-3dark green, yellowish green
Ningyoiteraremineral · Mohs 3brown, yellowish-brown- No imageNiningeriteraremineral · Mohs 3.5-4dark brown, black, gray
Niobocarbideraremineral · Mohs 8-9gray, yellowish-gray- No imageNioboholtiteraremineral · Mohs 7-8brown, yellowish-brown
Niobokupletskiteraremineral · Mohs 3-4brown, dark brown, reddish-brown
Niobophylliteraremineral · Mohs 3bronze-brown, golden-brown, dark brown
Niocaliteraremineral · Mohs 6yellow, yellow-orange, amber- No imageNipalarsiteraremineral · Mohs 3-4white, colorless
Nisbiteraremineral · Mohs 5-6white, tin-white, gray- No imageNisniteraremineral · Mohs 4white, silver-white
Nissoniteraremineral · Mohs 2.5blue-green, pale green
Nitratineraremineral · Mohs 1.5-2white, colorless, yellowish
Nitriteraremineral · Mohs 1.5-2yellow, white, colorless
Nitrobariteraremineral · Mohs 3colorless, white
Nitromagnesiteraremineral · Mohs 1.5-2white, colorless
Niveolaniteraremineral · Mohs 3white, colorless- No imageNixoniteraremineral · Mohs 4-4.5dark brown, black
- No imageNizamoffiteraremineral · Mohs 4colorless, white, pale yellow
Nobleiteraremineral · Mohs 3colorless, white- No imageNoelbensoniteraremineral · Mohs 5-6dark brown, black
Nöggerathite-(Ce)raremineral · Mohs 4yellow, brown- No imageNolaniteraremineral · Mohs 4.5bronze, brownish-black
- No imageNollmotziteraremineral · Mohs 2.5yellow, yellow-green
- No imageNolzeiteraremineral · Mohs 4brown, yellow-brown, pale yellow
- No imageNoonkanbahiteraremineral · Mohs 5.5yellow, yellow-brown
Norbergiteraremineral · Mohs 6-6.5yellow, orange, brown
Nordenskiöldineraremineral · Mohs 5-6yellow, brown, white
Nordgauiteraremineral · Mohs 3-4colorless, white- No imageNordite-(Ce)raremineral · Mohs 5-5.5yellow, brown, colorless
- No imageNordite-(La)raremineral · Mohs 5-5.5colorless, white, pale yellow
Nordstranditeraremineral · Mohs 3white, colorless
Nordströmiteraremineral · Mohs 2.5lead-gray, steel-gray- No imageNorilskiteraremineral · Mohs 3-4silver-white, pale yellow
Normanditeraremineral · Mohs 5-6yellow, brown, reddish-brown
Norrishiteraremineral · Mohs 2.5-3red, brown
Norsethiteraremineral · Mohs 3.5white, colorless, gray
Nováčekiteraremineral · Mohs 2.5yellow, greenish-yellow, lemon-yellow
Novákiteraremineral · Mohs 3-3.5silver-white, gray- No imageNovgorodovaiteraremineral · Mohs 2white, colorless
- No imageNovodnepriteraremineral · Mohs 3.5white, yellowish-white
- No imageNovograblenoviteraremineral · Mohs 8black
Nowackiiteraremineral · Mohs 3-3.5black
Nuffielditeraremineral · Mohs 3.5lead-gray, tin-white
Nukundamiteraremineral · Mohs 3.5dark brown, bronze
Nullaginiteraremineral · Mohs 3bright green, apple green
Numanoiteraremineral · Mohs 5-5.5colorless, white
Number 8 Turquoiseraremineral · Mohs 5-6blue, green, spiderweb matrix- No imageNuragheiteraremineral · Mohs 2yellow, yellow-orange
- No imageNuwaiteraremineral · Mohs 3.5white, gray
Nybøiteraremineral · Mohs 5-6blue, blue-green, violet-blue
Nyerereiteraremineral · Mohs 3.5colorless, white, pale yellow- No imageNyholmiteraremineral · Mohs 3-4white, colorless
- No imageO'Danieliteraremineral · Mohs 3light blue, bluish white
- No imageOberthüriteraremineral · Mohs 3.5-4black, brown
Obradovicite-KCuraremineral · Mohs 2-3yellow, greenish-yellow- No imageObradovicite-NaCuraremineral · Mohs 2-3yellow, greenish-yellow
- No imageObradovicite-NaNararemineral · Mohs 2-3yellow, orange-yellow
- No imageOdigitriaiteraremineral · Mohs 5-6white, colorless
- No imageOdiniteraremineral · Mohs 2-3green, greenish-blue
Odintsoviteraremineral · Mohs 5white, colorless, yellow- No imageOeniteraremineral · Mohs 3.5white, pale yellow
Offretiteraremineral · Mohs 4white, colorless, yellowish- No imageOftedaliteraremineral · Mohs 4-5white, colorless, pinkish-white
Ogdensburgiteraremineral · Mohs 3-4yellow, yellowish-orange, brownish-yellow- No imageOgnititeraremineral · Mohs 3.5-4bronze, brownish-yellow
Ohmiliteraremineral · Mohs 3.5colorless, white, pale yellow
Ojuelaiteraremineral · Mohs 3yellow, orange-yellow
Okanoganite-(Y)raremineral · Mohs 4-5yellow, brown, reddish-brown- No imageOkayamaliteraremineral · Mohs 5white, colorless
Okhotskiteraremineral · Mohs 5-6red, brownish-red- No imageOkruschiteraremineral · Mohs 4pink, pale pink
Oldhamiteraremineral · Mohs 4yellowish-brown, brown, gray- No imageOlekminskiteraremineral · Mohs 3.5white, colorless
Oleniteraremineral · Mohs 7-7.5pink, colorless, white
Olgiteraremineral · Mohs 4colorless, white, pale yellow- No imageOlkhonskiteraremineral · Mohs 2-3yellow, brownish-yellow
Olmiiteraremineral · Mohs 5pink, brown, white
Olmsteaditeraremineral · Mohs 3-4dark brown, black
Olsacheriteraremineral · Mohs 3-4colorless, white, pale yellow
Olshanskyiteraremineral · Mohs 3white, colorless
Olympiteraremineral · Mohs 4white, colorless- No imageOmariniiteraremineral · Mohs 3.5black, dark gray
- No imageOmeiiteraremineral · Mohs 4-5tin-white
- No imageOmineliteraremineral · Mohs 7.5dark blue, blue-green
- No imageOmongwaiteraremineral · Mohs 2colorless, white, yellow
Omsiteraremineral · Mohs 2yellow, greenish-yellow
Ondrušiteraremineral · Mohs 4white, colorless- No imageOneilliteraremineral · Mohs 3-4brown, yellow-brown
Onoratoiteraremineral · Mohs 2colorless, white, yellow
Oosterboschiteraremineral · Mohs 3-3.5white, pale yellow- No imageOphiriteraremineral · Mohs 2yellow, yellowish-orange
- No imageOppenheimeriteraremineral · Mohs 2-3yellow, pale yellow
Orceliteraremineral · Mohs 3.5-4pale bronze, yellowish-white
Ordoñeziteraremineral · Mohs 6-6.5yellowish brown, brown, dark brown
Örebroiteraremineral · Mohs 5-6black, brownish-black
Oregoniteraremineral · Mohs 4.5-5white, pale metallic yellow- No imageOrganovaite-Mnraremineral · Mohs 5yellow, brown, pink
Organovaite-Znraremineral · Mohs 5yellow, brown, orange- No imageOrickiteraremineral · Mohs 2.5dark brown, black, gray
Orientiteraremineral · Mohs 3.5-4brown, dark brown- No imageOrlandiiteraremineral · Mohs 2yellow, pale yellow
- No imageOrloviteraremineral · Mohs 2.5-3colorless, pale yellow, white
Orlymaniteraremineral · Mohs 4white, pale pink
Orschalliteraremineral · Mohs 2colorless, white- No imageOrthobranneriteraremineral · Mohs 4-5black, brownish-black
- No imageOrthocuproplatinumraremineral · Mohs 4white, silver-white
- No imageOrthogersdorffiteraremineral · Mohs 5.5-6white, steel-gray, silver-white
- No imageOrthojoaquinite-(Ce)raremineral · Mohs 5-5.5brown, yellowish-brown, orange-brown
- No imageOrthojoaquinite-(La)raremineral · Mohs 5-5.5yellow, brown, orange-brown
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