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 1801–1920 of 4900 rare entries (page 16 of 41).
- No imageHereroiteraremineral · Mohs 2-3yellow, yellow-green
- No imageHermannjahniteraremineral · Mohs 5-6deep green, black
- No imageHermannroseiteraremineral · Mohs 4green, yellow-green
Herzenbergiteraremineral · Mohs 2black, dark gray
Hessiteraremineral · Mohs 2.5-3lead-gray, iron-black
Heteromorphiteraremineral · Mohs 2.5-3lead-gray, black- No imageHeulandite-Bararemineral · Mohs 3.5-4white, colorless, yellow
- No imageHeulandite-Srraremineral · Mohs 3-4white, colorless, gray
Hewettiteraremineral · Mohs approx 1dark red, deep red, maroon- No imageHexacelsianraremineral · Mohs 6white, colorless, gray
Hexaferrumraremineral · Mohs 4white, silver-white
Hexahydroboriteraremineral · Mohs 2white, colorless- No imageHexamolybdenumraremineral · Mohs 6white, silver-white
Heyiteraremineral · Mohs 3yellow, orange-yellow
Heyrovskýiteraremineral · Mohs 4lead-gray, tin-white- No imageHezuoliniteraremineral · Mohs 6white, pale yellow
Hiärneiteraremineral · Mohs 5-6yellow, brown
Hibbingiteraremineral · Mohs 3dark brown, reddish brown, black
Hiboniteraremineral · Mohs 7.5-8black, brown, reddish-brown
Hidalgoiteraremineral · Mohs 4-4.5white, colorless, yellow
Hiddeniteraregemstone · Mohs 6.5-7yellowish-green, emerald-green
Hielscheriteraremineral · Mohs 2.5white, colorless
Hieratiteraremineral · Mohs 2colorless, white, grayish
Hilairiteraremineral · Mohs 4brown, yellow, orange
Hilarioniteraremineral · Mohs 2-3light green, yellowish-green
Hilgarditeraremineral · Mohs 5colorless, white, pink
Hillebranditeraremineral · Mohs 6white, colorless, gray- No imageHillesheimiteraremineral · Mohs 4-5white, colorless, pale yellow
- No imageHilliteraremineral · Mohs 3.5white, colorless
Hingganite-(Ce)raremineral · Mohs 6.5-7yellowish-brown, brown, greenish-brown- No imageHingganite-(Nd)raremineral · Mohs 6.5-7yellowish-brown, brown, black
Hingganite-(Y)raremineral · Mohs 6.5-7yellow, yellowish-green, brown- No imageHingganite-(Yb)raremineral · Mohs 6.5-7colorless, white, pale yellow
Hinsdaliteraremineral · Mohs 4.5colorless, white, pale yellow
Hiortdahliteraremineral · Mohs 5-5.5yellow, yellowish-brown, colorless- No imageHitachiiteraremineral · Mohs 1.5-2lead-gray, tin-white
- No imageHizenite-(Y)raremineral · Mohs 3-4white, colorless
- No imageHjalmariteraremineral · Mohs 5.5-6brown, yellowish-brown
- No imageHloušekiteraremineral · Mohs 5.5white, gray, pale yellow
- No imageHocartiteraremineral · Mohs 3-3.5steel-gray, iron-black
- No imageHochelagaiteraremineral · Mohs 3white, colorless
- No imageHodgesmithiteraremineral · Mohs 2white, colorless
Hodgkinsoniteraremineral · Mohs 4.5-5pink, red, reddish-orange
Hodrušiteraremineral · Mohs 3.5dark gray, lead gray, black
Hoeliteraremineral · Mohs 1-2yellow, bright yellow
Hoganiteraremineral · Mohs 2blue, green-blue- No imageHogarthiteraremineral · Mohs 3-4yellow, pale yellow
Høgtuvaiteraremineral · Mohs 5-6black, brown
Hohmanniteraremineral · Mohs 3orange, brownish orange, reddish orange
Holdawayiteraremineral · Mohs 3-4pink, pale pink, colorless
Holdeniteraremineral · Mohs 3-4red, pink, orange-red
Holfertiteraremineral · Mohs 3-4yellow, yellow-brown
Holley Blue Agateraremineral · Mohs 6.5-7blue, violet, lavender
Hollingworthiteraremineral · Mohs 6silver-white, light-gray
Holmquistiteraremineral · Mohs 5-6violet, lavender, dark blue
Holtedahliteraremineral · Mohs 4colorless, white, pale green
Holtiteraremineral · Mohs 7-8yellow, brown, tan- No imageHoltstamiteraremineral · Mohs 7yellowish-brown, brown
- No imageHomiliteraremineral · Mohs 5black, brown, greenish-black
- No imageHoneaiteraremineral · Mohs 1-2yellow, brown
Honessiteraremineral · Mohs 2yellow, golden yellow, greenish yellow- No imageHongheiteraremineral · Mohs 6.5dark brown, black, reddish-brown
Hongshiiteraremineral · Mohs 2.5-3white, pale yellow- No imageHonzaiteraremineral · Mohs 2white, colorless
Hopeiteraremineral · Mohs 3.5white, colorless, yellowish- No imageHorákiteraremineral · Mohs 3.5yellow, yellow-green
Hörnesiteraremineral · Mohs 1white, colorless, pale pink- No imageHoromaniteraremineral · Mohs 5-6brown, yellowish-brown
Horváthite-(Y)raremineral · Mohs 4white, colorless, pale yellow
Hotsoniteraremineral · Mohs 4white, colorless- No imageHousleyiteraremineral · Mohs 3yellow, brownish-yellow
- No imageHowardevansiteraremineral · Mohs 5.5black
Howieiteraremineral · Mohs 5dark brown, black, dark green
Hsianghualiteraremineral · Mohs 6colorless, white, pinkish
Huanghoite-(Ce)raremineral · Mohs 4.5yellow, brownish yellow, pale yellow- No imageHuangiteraremineral · Mohs 3.5yellow, yellowish-brown
- No imageHuanzalaiteraremineral · Mohs 2yellow, pale yellow
Hubeiteraremineral · Mohs 4brown, reddish-brown
Huemuliteraremineral · Mohs 2orange, yellow-orange- No imageHueniteraremineral · Mohs 1.5-2white, colorless
Hügeliteraremineral · Mohs 3-4orange, orange-red, brown- No imageHughesiteraremineral · Mohs 2yellow, greenish-yellow
- No imageHuizingite-(Al)raremineral · Mohs 2-3yellow, yellowish-orange
Hulsiteraremineral · Mohs 3.5black, brownish-black
Humberstoniteraremineral · Mohs 2.5colorless, white, gray
Humboldtineraremineral · Mohs 2yellow, brownish-yellow, amber-yellow
Hummeriteraremineral · Mohs 2orange, yellow-orange- No imageHunchuniteraremineral · Mohs 3-3.5white, silver-white
- No imageHundholmenite-(Y)raremineral · Mohs 5yellow, brown, brownish-yellow
Hungchaoiteraremineral · Mohs 2-3colorless, white, yellowish- No imageHurlbutiteraremineral · Mohs 6colorless, white, pale yellow
- No imageHutcheoniteraremineral · Mohs 7black, brown
Hutchinsoniteraremineral · Mohs 1.5-2red, dark red, black
Huttoniteraremineral · Mohs 4.5-5colorless, white, yellowish
Hyalotekiteraremineral · Mohs 5-5.5white, colorless, gray- No imageHydrobasaluminiteraremineral · Mohs 2white, pale yellow
Hydrocalumiteraremineral · Mohs 2white, colorless
Hydrocerussiteraremineral · Mohs 3.5white, colorless, gray- No imageHydrochlorboriteraremineral · Mohs 2white, colorless
- No imageHydrodelhayeliteraremineral · Mohs 3colorless, white
Hydrodresseriteraremineral · Mohs 3white, colorless
Hydroglauberiteraremineral · Mohs 2-3colorless, white, gray
Hydrohaliteraremineral · Mohs 2colorless, white
Hydrohonessiteraremineral · Mohs 1-2yellow, yellowish-green
Hydrokenoelsmoreiteraremineral · Mohs 5-5.5yellow, brown, colorless
Hydrokenomicroliteraremineral · Mohs 5-5.5yellow, brown, colorless
Hydrokenopyrochloreraremineral · Mohs 5-5.5yellow, brown, colorless
Hydrokenoralstoniteraremineral · Mohs 4.5white, colorless, yellowish- No imageHydrombobomkuliteraremineral · Mohs 2white, pale blue, pale green
- No imageHydroniumpharmacoalumiteraremineral · Mohs 2.5white, yellow, greenish yellow
- No imageHydroniumpharmacosideriteraremineral · Mohs 2.5yellow, green, brown
- No imageHydronováčekiteraremineral · Mohs 2-2.5yellow, greenish-yellow
- No imageHydroplumboelsmoreiteraremineral · Mohs 5-5.5yellow, brown, orange
Hydropyrochloreraremineral · Mohs 5-5.5brown, yellowish-brown, reddish-brown
Hydroromarchiteraremineral · Mohs 2white, colorless
Hydroscarbroiteraremineral · Mohs 2-3white- No imageHydroterskiteraremineral · Mohs 4.5-5colorless, white, pale yellow
Hydrotungstiteraremineral · Mohs 2yellow, yellowish-green, green
Hydrowoodwarditeraremineral · Mohs 2blue, pale blue, blue-green
Hydroxycalciomicroliteraremineral · Mohs 5-5.5yellow, brown, pale yellow
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