Gray rocks & minerals
Gray rocks and minerals are extremely common in the field. Hardness, density, and how the specimen breaks (fracture vs. cleavage) tell you more than color alone.
Showing 361–480 of 744 gray rocks (page 4 of 7).
- No imageCatamarcaiteraremineral · Mohs 3.5gray
Cerargyriteuncommonmineral · Mohs 1.5colorless, white, gray
Cerite-(CeCa)raremineral · Mohs 5.5brown, reddish-brown, gray- No imageČernýiteraremineral · Mohs ~4steel gray, gray
- No imageCervelleiteraremineral · Mohs 1.5gray, black
Cesàroliteraremineral · Mohs 4.5steel gray, gray
Chalcedony Geodecommonmineral · Mohs 6.5-7white, gray, blue
Chalcedony Nodulecommonmineral · Mohs 6.5-7white, gray, blue
Chaméaniteraremineral · Mohs 4.5gray, grayish black
Chamositecommonmineral · Mohs 2-3gray, greenish gray, brown- No imageChangchengiteraremineral · Mohs 3.7gray, black
Chervetiteraremineral · Mohs 3brown, colorless, gray- No imageChovaniteraremineral · Mohs 3gray
Chrisstanleyiteraremineral · Mohs ~5gray, silvery gray
Chrysotile Asbestoscommonmineral · Mohs 2.5-3white, gray, green
Churchite-(Y)raremineral · Mohs 3colorless, gray, snow white
Clam Geodecommonfossil · Mohs 6.5-7white, gray, brown
Clear Agatecommonmineral · Mohs 6.5-7colorless, white, gray
Cleavelanditecommonmineral · Mohs 6white, colorless, pale blue
Clinozoisitecommonmineral · Mohs 6.5colorless, green, gray
Coiraiteraremineral · Mohs ~2gray
Cold Water Agatecommonmineral · Mohs 6.5-7gray, white, yellow
Collophanecommonmineral · Mohs 5white, gray, yellow
Colorado Yule Marblecommonmetamorphic · Mohs 3-4white, gray
Corrensiteuncommonmineral · Mohs 1-2white, pink, brown
Cosaliteuncommonmineral · Mohs 2.5-3gray, steel gray, silver white
Crandalliteuncommonmineral · Mohs 5gray, yellow, yellowish white
Cristobaliteuncommonmineral · Mohs 6-7white, blue gray, brown
Crookesiteraremineral · Mohs 2.5-3blue gray, brown pink, gray
Cryptohaliteraremineral · Mohs 2.5colorless, gray, white
Cryptomelanecommonmineral · Mohs 6-6.5black, gray, blue gray
Cummingtoniteuncommonmineral · Mohs 5-6white, black, blackish brown
Cuprobismutiteraremineral · Mohs 3.5blue black, gray, dark blue black- No imageCupromakopavoniteraremineral · Mohs 3-4gray
- No imageCupromakovickyiteraremineral · Mohs 4gray
- No imageCupropavoniteraremineral · Mohs 2gray, tin white
Dadsoniteraremineral · Mohs 2.5lead gray, gray
Dalnegorskiteraremineral · Mohs 6white, colorless, gray
Danburiteuncommonmineral · Mohs 7-7.25colorless, white, gray
Danielsiteraremineral · Mohs 2-2.5gray, steel gray- No imageDaomaniteraremineral · Mohs 3.5-4gray, silver gray
- No imageDecagoniteraremineral · Mohs 6gray, black
Denisoviteraremineral · Mohs 4-5greenish gray, gray
Diaphoriteraremineral · Mohs 2.5-3gray, steel gray
Dickitecommonmineral · Mohs 2-2.5white, blue, colorless
Dogtooth Calcitecommonmineral · Mohs 3white, colorless, yellow
Domeykiteuncommonmineral · Mohs 3-3.5tin white, gray, yellow brown
Donnayite-(Y)raremineral · Mohs ~3colorless, brown, brownish yellow
Drusy Quartzcommonmineral · Mohs 7colorless, white, gray
Dufrénoysiteraremineral · Mohs 3lead gray, gray, steel gray
Dunham Dolomitecommonsedimentary · Mohs 3.5-4gray, buff, tan
Dyscrasiteuncommonmineral · Mohs 3.5-4silver white, gray, yellow
Echinoid Geodeuncommonfossil · Mohs 7gray, white, clear
Edeniteuncommonmineral · Mohs 6bluish green, colorless, gray
Edingtoniteraremineral · Mohs 4-4.5white, brownish gray, colorless- No imageEdscottiteraremineral · Mohs 5white, gray
Ekebergitecommonmineral · Mohs 5-6white, gray, yellow- No imageElixiriteraremineral · Mohs 6-7white, gray, colorless
Emplectiteuncommonmineral · Mohs 2gray, grayish yellow, silver white
Endelliteuncommonmineral · Mohs 1-2blue, brown, colorless
Epididymiteraremineral · Mohs 5.5white, colorless, gray
Epistoliteraremineral · Mohs 1.5-3white, yellowish white, gray- No imageErionite-Cararemineral · Mohs 3.5-4white, green, gray
Erionite-Kuncommonmineral · Mohs 3.5-4white, green, gray- No imageErionite-Nararemineral · Mohs 3.5-4white, green, gray
- No imageErniggliiteraremineral · Mohs 2-3black, gray, black gray
Eskimoiteraremineral · Mohs 4black, gray
Eucairiteuncommonmineral · Mohs 2.5bronze, gray, silver white
Eudidymiteraremineral · Mohs 6blue, colorless, violet
Fahleiteraremineral · Mohs 2gray, gray green, light green- No imageFairfield Agatecommonmineral · Mohs 6.5-7brown, tan, white
Favositescommonfossil · Mohs 3-4gray, tan, brown- No imageFelbertaliteraremineral · Mohs 3.3-3.4gray
Feldsparcommonmineral · Mohs 6white, gray, pink
Fergusonite-(Y)uncommonmineral · Mohs 5.5-6.5black, brown, gray
Ferrihollanditeraremineral · Mohs 6black, gray
Ferro-gedriteraremineral · Mohs 5.5-6gray, brown
Ferrokësteriteraremineral · Mohs ~4steel gray, gray
Fibrolitecommonmineral · Mohs 6.5-7.5white, colorless, gray
Finger Coralcommonfossil · Mohs 3-4white, tan, brown
Finnemaniteraremineral · Mohs 2.5gray, black- No imageFlamiteraremineral · Mohs 5-5.5pale yellow, gray
Florencite-(Ce)uncommonmineral · Mohs 5-6colorless, gray, light yellow
Fort Payne Chertcommonmineral · Mohs 6.5-7white, gray, brown
Fossilcommonfossil · Mohs 3-7brown, gray, white
Fossil Coralcommonfossil · Mohs 6.5-7white, tan, brown
Fossil Leaf Printcommonfossil · Mohs 2-4brown, tan, black
Fossil Plantcommonfossilbrown, black, gray
Fossilized Coralcommonfossil · Mohs 6.5-7white, gray, brown
Fossilized Horse Bonecommonfossil · Mohs 3-6brown, tan, white- No imageFossilized Quarrycommonfossilbrown, tan, gray
Francolitecommonmineral · Mohs 5white, gray, yellow
Freieslebeniteraremineral · Mohs 2-2.5gray, silver white, blackish lead gray
Freudenbergiteraremineral · Mohs <5brownish black, gray, black
Frooditeraremineral · Mohs 2.5gray
Fukuchiliteraremineral · Mohs ~4gray
Fülöppiteraremineral · Mohs 2.5gray, bronze yellow, steel blue
Furutobeiteraremineral · Mohs 3gray
Galenobismutiteuncommonmineral · Mohs 2.5-3.5lead gray, gray, light gray
Galliteraremineral · Mohs 3-3.5gray
Ganomaliteraremineral · Mohs 3colorless, gray, white
Garavelliteraremineral · Mohs 4gray- No imageGarmiteraremineral · Mohs 3.5white, colorless, gray
- No imageGarutiiteraremineral · Mohs 4.5-5white, gray, gray-black
Gastrolithuncommonfossilvariable, brown, gray
Gastropodcommonfossil · Mohs 3-5white, brown, gray- No imageGatedaliteraremineral · Mohs 3.5-4gray
Gaylussiteuncommonmineral · Mohs 2.5-3colorless, gray, gray white
Gedriteuncommonmineral · Mohs 5.5-6brown, brown green, green
Gehleniteuncommonmineral · Mohs 5-6gray, brown, colorless
Genkiniteraremineral · Mohs 5.5-6gray
Geocroniteuncommonmineral · Mohs 2.5blue gray, gray, silver white
Gerasimovskiteraremineral · Mohs 2brown, gray, light gray
Gersdorffiteuncommonmineral · Mohs 5.5silver white, gray, grayish black
Gibbsitecommonmineral · Mohs 2.5-3.5bluish, green, green white
Gismondine-Cauncommonmineral · Mohs 4-5white, colorless, gray
Gladiteraremineral · Mohs 2-3lead gray, gray, tin white
Glauberitecommonmineral · Mohs 2.5-3colorless, gray, gray white
Glaucoceriniteraremineral · Mohs 1white, sky blue, gray
Gold Quartzcommonmineral · Mohs 7white, gray, yellow
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