Common rocks & minerals
Common rocks and minerals show up routinely in field collecting and on dealer tables. They are the right place to start a reference collection — most are inexpensive, durable, and well-documented.
Showing 121–240 of 780 common entries (page 2 of 7).
Boratecommonmineral · Mohs 2-4white, colorless, gray
Boraxcommonmineral · Mohs 2-2.5white, colorless, gray
Bornitecommonmineral · Mohs 3copper red, bronze, iridescent blue
Bosoitecommonmineral · Mohs 3-4black
Botswana Agatecommonmineral · Mohs 6.5-7gray, white, brown
Brachiopodcommonfossilgray, brown, white
Brain Coralcommonfossil · Mohs 3-4white, tan, brown
Brazilian Agatecommonmineral · Mohs 6.5-7gray, white, brown
Brazilian Geodecommonmineral · Mohs 7purple, white, clear
Brecciacommonsedimentary · Mohs 3-7gray, brown, red
Brecciated Jaspercommonmineral · Mohs 6.5-7red, brown, yellow
Brochantitecommonmineral · Mohs 3.5-4emerald-green, dark-green, bright-green
Bronzitecommonmineral · Mohs 5.5-6brown, bronze, greenish-brown- No imageBrown Jaspercommonmineral · Mohs 6.5-7brown, tan, chocolate
- No imageBrown Sapphirecommongemstone · Mohs 9brown, golden brown, reddish brown
- No imageBrown Tourmalinecommonmineral · Mohs 7-7.5brown, dark brown, yellowish-brown
- No imageBrown Zirconcommongemstone · Mohs 7.5brown, reddish-brown, yellowish-brown
Brucitecommonmineral · Mohs 2.5white, pale green, blue
Bryozoancommonfossil · Mohs 3-5white, gray, tan- No imageBubblegum Agatecommonmineral · Mohs 6.5-7pink, white, translucent-pink
Calaminecommonmineral · Mohs 4.5-5white, colorless, blue- No imageCalcified Coralcommonfossil · Mohs 3-4white, brown, tan
Calcitecommonmineral · Mohs 3white, colorless, yellow- No imageCalcite Nodulescommonmineral · Mohs 3white, yellow, gray
- No imageCalcite Onyxcommonmineral · Mohs 3white, brown, tan
Calymenecommonfossilgray, brown, tan
Cannel Coalcommonsedimentary · Mohs 2-3black, brownish-black- No imageCantera Opalcommongemstone · Mohs 5.5-6.5orange, red, yellow
Cape May Diamondcommonmineral · Mohs 7colorless
Carnallitecommonmineral · Mohs 2.5white, colorless, yellow
Carneliancommonmineral · Mohs 6.5-7red, red-orange, brownish-red
Carnotitecommonmineral · Mohs 2bright yellow, lemon yellow
Cassiteritecommonmineral · Mohs 6-7black, brown, reddish-brown
Catlinitecommonsedimentary · Mohs 2.5-3red, reddish-brown, brown
Cave Pearlscommonmineral · Mohs 3white, cream, gray
Celadonitecommonmineral · Mohs 2green, blue-green, grayish-green
Celestinecommonmineral · Mohs 3-3.5colorless, white, pale blue
Celestitecommonmineral · Mohs 3-3.5colorless, white, pale blue- No imageCelestite Concretionscommonmineral · Mohs 3-3.5blue, white, colorless
Cerussitecommonmineral · Mohs 3-3.5colorless, white, gray
Chabazitecommonmineral · Mohs 4-5white, colorless, pink
Chabazite-Cacommonmineral · Mohs 4-5white, colorless, yellow- No imageChabazite-Nacommonmineral · Mohs 4-5white, colorless, yellow
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue- No imageChalcedony Geodecommonmineral · Mohs 6.5-7white, gray, blue
- No imageChalcedony Nodulescommonmineral · Mohs 6.5-7white, gray, blue
Chalcocitecommonmineral · Mohs 2.5-3lead-gray, black, tarnish-blue
Chalcopyritecommonmineral · Mohs 3.5-4brass-yellow, iridescent, gold
Chalkcommonsedimentary · Mohs 1white, off-white, gray
Chamositecommonmineral · Mohs 3green, grayish-green, blackish-green- No imageCharlevoix Stonecommonfossil · Mohs 3-4gray, white, beige
Charnockitecommonigneous · Mohs 6-7gray, greenish, brown
Chertcommonmineral · Mohs 6.5-7white, gray, brown- No imageChert Nodulescommonmineral · Mohs 6.5-7gray, brown, black
- No imageChevron Amethystcommongemstone · Mohs 7purple, white, violet
Chiastolitecommonmineral · Mohs 6.5-7.5gray, yellowish-brown, reddish-brown
Chloritecommonmineral · Mohs 2-2.5green, dark green, blackish green
Chloritoidcommonmineral · Mohs 6.5dark green, gray, blackish-green
Chondritecommonigneous · Mohs 5-6gray, brown, black
Chromitecommonmineral · Mohs 5.5black, brownish-black
Chrysocollacommonmineral · Mohs 2-4blue, blue-green, green
Chrysolitecommonmineral · Mohs 6.5-7yellow-green, olive-green, emerald-green
Chrysotilecommonmineral · Mohs 2.5-3white, green, gray
Chrysotile Asbestoscommonmineral · Mohs 2.5-3white, gray, green
Citrinecommongemstone · Mohs 7yellow, golden-yellow, amber
Citrine Geodecommongemstone · Mohs 7yellow, orange, brownish-yellow- No imageClam Geodecommonfossil · Mohs 6.5-7white, gray, brown
Claystonecommonsedimentary · Mohs 1-2gray, brown, red- No imageClear Agatecommonmineral · Mohs 6.5-7colorless, white, gray
- No imageClear Quartzcommonmineral · Mohs 7colorless, white
- No imageClear Topazcommongemstone · Mohs 8colorless, white
Cleavelanditecommonmineral · Mohs 6white, colorless, pale blue
Clinochlorecommonmineral · Mohs 2-2.5green, dark green, yellowish green
Clinoptilolite-Cacommonmineral · Mohs 3.5-4white, colorless, pink
Clinoptilolite-Kcommonmineral · Mohs 3.5-4white, colorless, yellow
Clinoptilolite-Nacommonmineral · Mohs 3.5-4white, colorless, gray
Clinozoisitecommonmineral · Mohs 6-7colorless, white, gray
Coalcommonsedimentary · Mohs 0.5-2.5black, brown- No imageCoccolitecommonmineral · Mohs 5.5-6.5light green, grass green, white
- No imageColdwater Agatecommonmineral · Mohs 6.5-7gray, white, yellow
- No imageCollophanecommonmineral · Mohs 5white, gray, yellow
Colorado Yule Marblecommonmetamorphic · Mohs 3-4white, gray
Common Opalcommonmineral · Mohs 5.5-6.5white, gray, yellow
Concretioncommonsedimentary · Mohs 3-7brown, gray, tan
Concretions With Fossilscommonfossil · Mohs 3-5brown, gray, tan
Condor Agatecommonmineral · Mohs 6.5-7red, orange, yellow
Conichalcitecommonmineral · Mohs 4.5green, yellow-green, emerald-green
Copalcommonfossil · Mohs 1.5-2.5yellow, orange, brown- No imageCopalitecommonfossil · Mohs 2-2.5yellow, orange, brown
Copiapitecommonmineral · Mohs 2.5-3yellow, golden yellow, orange yellow
Coppercommonmineral · Mohs 2.5-3copper-red, reddish-brown- No imageCopper Nuggetscommonmineral · Mohs 2.5-3reddish-brown, copper-red, tarnished brown
Coquinacommonsedimentary · Mohs 3tan, white, light gray
Coralcommonfossil · Mohs 3-4white, pink, red
Coral Fossilcommonfossil · Mohs 6.5-7white, tan, brown
Cordieritecommonmineral · Mohs 7-7.5blue, violet, gray
Corundumcommonmineral · Mohs 9colorless, red, blue- No imageCossaitecommonmineral · Mohs 7white, gray
Covellitecommonmineral · Mohs 1.5-2indigo blue, iridescent- No imageCrab Orchard Sand Stonecommonsedimentary · Mohs 6-7pink, red, buff
Crazy Lace Agatecommonmineral · Mohs 6.5-7white, gray, yellow
Crinoid Stemscommonfossil · Mohs 3-4gray, white, tan
Crinoidal Limestonecommonsedimentary · Mohs 3gray, tan, white
Crinoidscommonfossil · Mohs 3-4gray, white, tan
Crocidolitecommonmineral · Mohs 4blue, lavender-blue, indigo- No imageCrocodile Toothcommonfossil · Mohs 3-5brown, tan, black
- No imageCryptochalcitecommonmineral · Mohs 3white, colorless, gray
Cryptomelanecommonmineral · Mohs 6-6.5black, gray- No imageCubo-icecommonmineral · Mohs 1.5colorless, white, blue
Cupritecommonmineral · Mohs 3.5-4red, dark red, cochineal red
Damouritecommonmineral · Mohs 2-3white, yellowish-white, pale green- No imageDark Gray Flintcommonmineral · Mohs 6.5-7dark gray, black, brown
Datolitecommonmineral · Mohs 5-5.5white, colorless, yellow
Dendritic Agatecommonmineral · Mohs 6.5-7white, colorless, gray
Dendritic Opalcommonmineral · Mohs 5.5-6.5white, cream, colorless- No imageDesert Rose Baritecommonmineral · Mohs 3-3.5tan, brown, cream
Desert Rose Gypsumcommonmineral · Mohs 2brown, tan, white
Diabasecommonigneous · Mohs 6-7dark gray, black, greenish-gray
Diamondcommongemstone · Mohs 10colorless, yellow, brown
Dickitecommonmineral · Mohs 2white, yellowish, brownish
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