Mohs hardness 7 rocks & minerals
Mohs hardness 7 is quartz — the practical line between rocks that scratch glass easily and rocks that don't. Most gem-grade silicates start here.
Showing 601–720 of 778 rocks (page 6 of 7).
- No imageQuartz Clusterscommonmineral · Mohs 7colorless, white, milky
- No imageQuartz Concretionscommonmineral · Mohs 7white, gray, brown
Quartz Geodecommonmineral · Mohs 7colorless, white, purple
Quartzitecommonmetamorphic · Mohs 7white, gray, pink- No imageRadekškodaite-(La)raremineral · Mohs 6-7dark brown, black
- No imageRainbow Moonstonecommongemstone · Mohs 6-6.5white, colorless, blue
- No imageRainforest Jaspercommonmineral · Mohs 6.5-7green, brown, cream
- No imageRamanite-(Cs)raremineral · Mohs 6-7yellow, brown, colorless
- No imageRed Agatecommonmineral · Mohs 6.5-7red, orange-red, brownish-red
Red Berylraregemstone · Mohs 7.5-8red, raspberry-red
Red Cassiteriteraremineral · Mohs 6-7red, brown, black- No imageRed Garnetcommonmineral · Mohs 6.5-7.5red, dark red, reddish-brown
Red Jaspercommonmineral · Mohs 6.5-7red, red-brown, brick red
Red Quartzitecommonmetamorphic · Mohs 7red, reddish-brown, pinkish-red- No imageRed Rutilecommonmineral · Mohs 6-6.5red, reddish-brown
Red Sandstonecommonsedimentary · Mohs 6-7red, red-brown, rust
Red Silicified Coralcommonfossil · Mohs 6.5-7red, brown, orange
Redledgeiteraremineral · Mohs 6-7red, brown, black- No imageReiditeraremineral · Mohs 7.5colorless, white
Rhodolitecommongemstone · Mohs 7-7.5pink, red, purple
Rhodonitecommonmineral · Mohs 5.5-6.5pink, reddish-pink, brown- No imageRhodonite Nodulescommonmineral · Mohs 5.5-6.5pink, red, brown
Rhyolitecommonigneous · Mohs 6-7gray, pink, tan
Ringwooditeraremineral · Mohs 6.5-7blue, purple, colorless
Rockcastle Conglomeratecommonsedimentary · Mohs 6-7gray, white, tan- No imageRose Agatecommonmineral · Mohs 6.5-7pink, rose, white
Rose Quartzcommongemstone · Mohs 7pink, rose-red
Rossmaniteraremineral · Mohs 7-7.5pink, colorless, pale red- No imageRossovskyiteraremineral · Mohs 6-6.5black, brownish black
Rubelliteuncommongemstone · Mohs 7-7.5pink, red, magenta
Rutheniridosmineraremineral · Mohs 6-7silver-white, light steel-gray
Rutilated Quartzcommongemstone · Mohs 7clear, white, smoky
Rutilecommonmineral · Mohs 6-6.5reddish-brown, red, black
Sagenite Agatecommonmineral · Mohs 6.5-7clear, white, yellow
Sandstonecommonsedimentary · Mohs 6-7tan, brown, yellow- No imageSandstone With Calcite Veinscommonsedimentary · Mohs 3-7tan, brown, red
Sapphirineraremineral · Mohs 7.5blue, blue-green, green
Sardcommonmineral · Mohs 6.5-7brownish-red, reddish-brown, orange-brown- No imageSavannah River Agatecommonfossil · Mohs 6.5-7red, orange, yellow
Scepter Quartzuncommonmineral · Mohs 7colorless, white, smoky
Schorlcommonmineral · Mohs 7-7.5black
Schorlomiteraremineral · Mohs 7-7.5black
Schreibersiteraremineral · Mohs 6.5-7brass-yellow, silver-white, tin-white
Schreyeriteraremineral · Mohs 6-7black, brownish-black
Schülleriteraremineral · Mohs 6.5-7.5yellow, brown, reddish-brown
Seifertiteraremineral · Mohs 7colorless, white
Sekaninaiteraremineral · Mohs 7-7.5blue, blue-violet, grayish-blue
Serendibiteraremineral · Mohs 6.5-7blue, blue-green, black
Shocked Quartzraremineral · Mohs 7clear, white, gray
Silesiaiteraremineral · Mohs 6.5-7yellow, brown, greenish- No imageSiliceous Oolitecommonsedimentary · Mohs 6.5-7white, gray, tan
- No imageSilicified Agatecommonfossil · Mohs 6.5-7multicolored, white, gray
Silicified Algaecommonfossil · Mohs 6.5-7tan, brown, gray- No imageSilicified Conodontsuncommonfossil · Mohs 7amber, brown, white
Silicified Coralcommonfossil · Mohs 6.5-7white, gray, brown- No imageSilicified Cycad Wooduncommonfossil · Mohs 6.5-7brown, tan, white
- No imageSilicified Dinosaur Boneuncommonfossil · Mohs 6.5-7red, brown, black
- No imageSilicified Fernscommonfossil · Mohs 6.5-7brown, black, gray
Silicified Fossilscommonfossil · Mohs 6.5-7brown, red, yellow- No imageSilicified Lignitecommonfossil · Mohs 6.5-7brown, black, gray
- No imageSilicified Mastodon Tusksrarefossil · Mohs 6.5-7white, cream, tan
- No imageSilicified Oolitecommonfossil · Mohs 6.5-7white, gray, brown
- No imageSilicified Palm Woodcommonfossil · Mohs 6.5-7brown, tan, black
- No imageSilicified Pine Conesuncommonfossil · Mohs 6.5-7brown, tan, gray
- No imageSilicified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Silkstonecommonmineral · Mohs 7white, gray, yellow
Sillimanitecommonmineral · Mohs 6.5-7.5white, colorless, gray
Simpsoniteraremineral · Mohs 6-7yellow, brown, colorless
Sinhaliteraremineral · Mohs 6.5-7yellow, brown, greenish-brown
Skarncommonmetamorphic · Mohs 5-7green, brown, black
Smoky Quartzcommonmineral · Mohs 7brown, gray, black- No imageSnakeskin Agatecommonmineral · Mohs 6.5-7white, gray, tan
Specularitecommonmineral · Mohs 5.5-6.5steel-gray, iron-black, silvery-gray
Sperryliteraremineral · Mohs 6-7tin-white, silver-white, lead-gray
Spessartineuncommonmineral · Mohs 6.5-7.5orange, red-orange, red
Spessartine Garnetuncommongemstone · Mohs 6.5-7.5orange, red-orange, yellow-orange- No imageSpherulitic Chertcommonmineral · Mohs 6.5-7white, gray, tan
Spodumeneuncommonmineral · Mohs 6.5-7colorless, white, gray
Sponge Fossilcommonfossil · Mohs 2.5-7gray, white, tan- No imageSrilankiteraremineral · Mohs 7-8black, brown
- No imageStar Garnetuncommonmineral · Mohs 7-7.5reddish-brown, dark red, black
Staurolitecommonmineral · Mohs 7-7.5reddish-brown, brown, brownish-black
Staurolite Crosscommonmineral · Mohs 7-7.5brown, reddish-brown, yellowish-brown
Staurolite Schistcommonmetamorphic · Mohs 3.5-7dark brown, gray, brownish-black
Stishoviteraremineral · Mohs 6.5-7colorless, white, gray- No imageStony Meteoriterarefossil · Mohs 5-7gray, brown, black
- No imageStoppaniiteraremineral · Mohs 7.5-8blue, light blue, blue-green
- No imageStripped Agatecommonmineral · Mohs 6.5-7white, gray, blue
Sugiliteraremineral · Mohs 6-6.5purple, violet, pinkish-purple
Sunstoneuncommongemstone · Mohs 6-6.5orange, red, gold- No imageSurinamiteraremineral · Mohs 7-7.5blue, blue-green, colorless
Sursassiteraremineral · Mohs 6.5-7reddish-brown, brown- No imageSweetwater Agatecommonmineral · Mohs 6.5-7clear, white, gray
Tabulate Coralcommonfossil · Mohs 5-7tan, brown, gray
Tantalite-(Fe)uncommonmineral · Mohs 6-6.5black, brownish-black
Tanzaniteraregemstone · Mohs 6.5-7blue, violet, purple
Tapiolite-(Fe)raremineral · Mohs 6-6.5black, brownish-black
Tapiolite-(Mn)raremineral · Mohs 6-6.5black, reddish-brown, brown- No imageTausoniteraremineral · Mohs 6-6.5colorless, pale yellow, pale red
Tazheraniteraremineral · Mohs 6.5yellow, white, colorless
Teepee Canyon Agatecommonmineral · Mohs 6.5-7red, pink, white
Tektitesuncommonfossil · Mohs 5.5-6.5black, brown, olive green
Teredo Petrified Woodcommonfossil · Mohs 6.5-7brown, tan, gray- No imageTexas Bouquet Agatecommonmineral · Mohs 6.5-7white, pink, red
Thalénite-(Y)raremineral · Mohs 6.5pink, flesh-red, gray
Thermaerogeniteraremineral · Mohs 7.5-8dark green, black
Thorianiteraremineral · Mohs 6.5-7black, brownish-black, reddish-brown
Thoriumraremineral · Mohs 6.5-7lead-gray, black, brown
Thortveititeraremineral · Mohs 6-7grayish-green, gray, greenish-white
Thuliteuncommonmineral · Mohs 6-6.5pink, reddish-pink, rose-red
Thundereggscommonmineral · Mohs 6.5-7multicolored, brown, gray
Tienshaniteraremineral · Mohs 6.5yellow, brown, colorless
Tiger's Eyecommonmineral · Mohs 7golden-yellow, brown, reddish-brown
Tinzeniteraremineral · Mohs 6.5-7yellow, orange, brown
Tissintiteraremineral · Mohs 6-7white, colorless
Titanoholtiteraremineral · Mohs 7-8brown, yellow-brown- No imageToturiteraremineral · Mohs 6-7dark brown, black
Tourmalinated Quartzcommonmineral · Mohs 7colorless, white
Tourmalinecommonmineral · Mohs 7-7.5black, green, pink- No imageTrattneriteraremineral · Mohs 6-7colorless, pale yellow, brownish
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