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 1921–2040 of 4900 rare entries (page 17 of 41).
- No imageHydroxycalciopyrochloreraremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageHydroxycalcioroméiteraremineral · Mohs 5-5.5yellow, yellow-brown, brown
Hydroxycancriniteraremineral · Mohs 5-6white, gray, yellow- No imageHydroxyferroroméiteraremineral · Mohs 5.5yellow, brown, orange
- No imageHydroxykenoelsmoreiteraremineral · Mohs 5-5.5yellow, brown, colorless
Hydroxykenomicroliteraremineral · Mohs 5-5.5yellow, brown, yellow-brown- No imageHydroxykenopyrochloreraremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageHydroxylbastnäsite-(Ce)raremineral · Mohs 4-4.5yellow, reddish-brown, brown
- No imageHydroxylbastnäsite-(La)raremineral · Mohs 4-4.5yellow, brownish-yellow, reddish-brown
- No imageHydroxylbastnäsite-(Nd)raremineral · Mohs 4-4.5yellow, brown, reddish-brown
- No imageHydroxylboriteraremineral · Mohs 4colorless, white, yellow
- No imageHydroxylchondroditeraremineral · Mohs 6-6.5yellow, brown, orange
- No imageHydroxylclinohumiteraremineral · Mohs 6yellow, orange-yellow, brown
- No imageHydroxyledgrewiteraremineral · Mohs 6.5white, colorless, pale yellow
Hydroxylellestaditeraremineral · Mohs 4.5-5colorless, white, gray- No imageHydroxylgugiaiteraremineral · Mohs 5colorless, white
- No imageHydroxylhedyphaneraremineral · Mohs 3.5-4white, colorless, yellow
Hydroxylherderiteraremineral · Mohs 5-5.5colorless, white, yellow- No imageHydroxylpyromorphiteraremineral · Mohs 3.5-4yellow, brown, green
- No imageHydroxylwagneriteraremineral · Mohs 5-5.5yellow, brown, colorless
Hydroxymanganopyrochloreraremineral · Mohs 5-5.5brown, yellowish-brown, reddish-brown- No imageHydroxynatropyrochloreraremineral · Mohs 5-5.5yellow, brown, reddish-brown
- No imageHydroxyplumbopyrochloreraremineral · Mohs 5-5.5yellowish-brown, brown, reddish-brown
- No imageHylbrowniteraremineral · Mohs 3-3.5yellow, yellow-orange
Hypercinnabarraremineral · Mohs 2red, bright red, scarlet- No imageHyttsjöiteraremineral · Mohs 3yellow, yellow-brown
Ianbruceiteraremineral · Mohs 2-3colorless, white
Iangreyiteraremineral · Mohs 3white, pale yellow
Ianthiniteraremineral · Mohs 2-3deep violet, dark purple- No imageIchnusaiteraremineral · Mohs 2yellow, colorless
Icosahedriteraremineral · Mohs 6metallic gray, silver
Idaiteraremineral · Mohs 3reddish-brown, bronze, copper-red
Idrialiteraremineral · Mohs 1-2yellow, yellow-white, greenish-yellow
Iimoriite-(Y)raremineral · Mohs 5-5.5white, gray, yellowish-white
Ikaiteraremineral · Mohs 2.5colorless, white, gray
Ikraniteraremineral · Mohs 5-6yellow, brown
Ikunoliteraremineral · Mohs 2lead-gray, tin-white
Ilesiteraremineral · Mohs 2green, yellowish-green, white
Ilímaussite-(Ce)raremineral · Mohs 3.5yellow, brown, pale yellow- No imageIlinskiteraremineral · Mohs 3yellow, orange, brown
- No imageIlirneyiteraremineral · Mohs 3-3.5yellow, yellowish-white
Ilmajokite-(Ce)raremineral · Mohs 5yellow, brown- No imageIltisiteraremineral · Mohs 2yellow, orange-yellow
- No imageIlyukhiniteraremineral · Mohs 5-6pink, reddish-brown
- No imageImandriteraremineral · Mohs 5-6red, brown, pink
Imayoshiiteraremineral · Mohs 3-4colorless, white
Imhofiteraremineral · Mohs 2dark red, brownish-red
Imiteriteraremineral · Mohs 2.5silver-white, gray- No imageInaglyiteraremineral · Mohs 2.5-3lead-gray, steel-gray
Inderboriteraremineral · Mohs 3.5colorless, white
Indialiteraremineral · Mohs 7-7.5blue, colorless
Indigiriteraremineral · Mohs 2white, pale blue
Inditeraremineral · Mohs 3.5iron-black, dark gray- No imageIngersoniteraremineral · Mohs 5colorless, white, gray
- No imageIngoditeraremineral · Mohs 1.5-2steel-gray, lead-gray, silver-white
- No imageIngramiteraremineral · Mohs 2white, colorless
- No imageInneliteraremineral · Mohs 3-4yellow, brown, golden-yellow
- No imageInnsbruckiteraremineral · Mohs 5-6colorless, white, yellowish
Insizwaiteraremineral · Mohs 4-5white, gray- No imageIntersiliteraremineral · Mohs 3-4white, colorless
Iodargyriteraremineral · Mohs 1.5yellow, yellowish-green, brownish
Iowaiteraremineral · Mohs 1.5-2green, blue-green- No imageIquiqueiteraremineral · Mohs 2yellow, pale yellow
Iraniteraremineral · Mohs 3.5orange, yellow
Iraqite-(La)raremineral · Mohs 5-6yellow, brown, yellowish-brown
Irarsiteraremineral · Mohs 6silver-white, steel-gray
Irhtemiteraremineral · Mohs 3white, colorless, pinkish
Iridarseniteraremineral · Mohs 3.5silver-white
Iridescent Ammoniterarefossil · Mohs 3.5-4iridescent, red, green- No imageIridosmineraremineral · Mohs 6-7tin-white, silver-white, gray
Iriginiteraremineral · Mohs 2yellow, lemon-yellow, orange-yellow- No imageIrinarassiteraremineral · Mohs 6-7yellow, brown
Iris Agateraremineral · Mohs 6.5-7colorless, white, gray
Ironraremineral · Mohs 4-5steel-gray, iron-black- No imageIrtyshiteraremineral · Mohs 5-6colorless, yellow
- No imageIseiteraremineral · Mohs 2yellow, greenish-yellow
- No imageIshiharaiteraremineral · Mohs 3-4gray, black
- No imageIshikawaiteraremineral · Mohs 5-6black, brownish-black
Isle Royale Greenstoneraremineral · Mohs 5-6green, blue-green, white- No imageIsoclasiteraremineral · Mohs 3.5white, colorless
Isocubaniteraremineral · Mohs 3.5brass-yellow, bronze-yellow
Isoferroplatinumraremineral · Mohs 4.5silver-white, light steel-gray- No imageIsokiteraremineral · Mohs 4.5colorless, white, grayish
Isolueshiteraremineral · Mohs 5.5black, brown
Isomertieiteraremineral · Mohs 3.5white, light yellow, silver-white- No imageIsoviteraremineral · Mohs 4-5white, pale yellow
Isseliteraremineral · Mohs 2.5white, yellowish-white- No imageItelmeniteraremineral · Mohs 3white, colorless, yellowish
- No imageItoigawaiteraremineral · Mohs 6-6.5green, pale green, yellowish-green
- No imageItoiteraremineral · Mohs 2.5white, colorless, yellow
- No imageItsiiteraremineral · Mohs 4yellow, brownish-yellow
- No imageIvanyukite-Curaremineral · Mohs 3-4green, yellowish-green
- No imageIvanyukite-Kraremineral · Mohs 4yellow, brown
- No imageIvanyukite-Nararemineral · Mohs 3-4yellow, yellowish-orange
- No imageIvsiteraremineral · Mohs 2yellow, yellowish-orange
- No imageIwashiroite-(Y)raremineral · Mohs 4-5yellowish brown, brown, black
- No imageIwateiteraremineral · Mohs 6-6.5yellow, brown
- No imageIyoiteraremineral · Mohs 5-6black
- No imageIzoklakeiteraremineral · Mohs 3.5lead-gray, blackish-gray
- No imageJáchymoviteraremineral · Mohs 2-3yellow, yellow-orange, orange
- No imageJacquesdietrichiteraremineral · Mohs 2-3blue, green-blue
- No imageJacutingaiteraremineral · Mohs 1-2steel gray, silver white
Jadariteraremineral · Mohs 3white, colorless
Jadeiteraremineral · Mohs 6.5-7green, white, lavender
Jaffeiteraremineral · Mohs 3.5colorless, white
Jagoiteraremineral · Mohs 3yellow, yellowish-orange
Jagoweriteraremineral · Mohs 4yellow, yellow-green- No imageJagüéiteraremineral · Mohs 2-3dark gray, black
Jahnsite-(CaFeMg)raremineral · Mohs 4yellow, brown, orange-brown
Jahnsite-(CaMnFe)raremineral · Mohs 4yellow, yellowish-brown, brown
Jahnsite-(CaMnMg)raremineral · Mohs 4yellow, yellow-brown, brown
Jahnsite-(CaMnMn)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jahnsite-(MnMnFe)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jahnsite-(MnMnMg)raremineral · Mohs 4yellow, brown, reddish-brown- No imageJahnsite-(MnMnMn)raremineral · Mohs 4yellow, yellowish-brown, brown
Jahnsite-(MnMnZn)raremineral · Mohs 4yellow, yellow-brown, brown
Jahnsite-(NaFeMg)raremineral · Mohs 3-4yellow, yellowish-brown, brown
Jahnsite-(NaMnMg)raremineral · Mohs 4yellow, brown, orange-brown- No imageJaipuriteraremineral · Mohs 5.5gray, silver-white
Jakobssoniteraremineral · Mohs 3.5colorless, white
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