Minerals
Minerals are naturally occurring inorganic substances with a specific chemical composition and crystalline structure. They are the building blocks of rocks and are classified by their chemical composition and crystal system.
236 specimens starting with "G" (of 5,084 total)
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Gabrielite
Hardness: 1.5 - 2
Gabrielsonite
Hardness: 3.5
Gadolinite
Hardness: 6.5 - 7
Gadolinite-(ce)
Hardness: 6.5 - 7
Gadolinite-(nd)
Hardness: 6.5 - 7
Gadolinite-(y)
Hardness: 6.5 - 7
Gagarinite
Gagarinite-(ce)
Hardness: 3.5
Gagarinite-(y)
Hardness: 4.5
Gageite
Hardness: 3
Gahnite
Hardness: 7.5 - 8
Gaidonnayite
Hardness: 5
Gaildunningite
Hardness: 3
Gainesite
Hardness: 4
Gaitite
Hardness: 5
Gajardoite
Hardness: 1.5
Galaxite
Hardness: 7.5
Galeaclolusite
Galeite
Galenobismutite
Hardness: 2.5 - 3.5
Galgenbergite-(ce)
Hardness: 2 - 3
Galileiite
Hardness: 4
Galkhaite
Hardness: 3
Galliskiite
Hardness: 2.5
Gallite
Hardness: 3 - 3.5
Gallobeudantite
Hardness: 4
Galloplumbogummite
Galuskinite
Hardness: 5
Gamagarite
Hardness: 4.5 - 5
Gananite
Hardness: 3.5
Ganomalite
Hardness: 3
Ganophyllite
Hardness: 4 - 4.5
Ganterite
Hardness: 4 - 4.5
Gaotaiite
Hardness: 3
Garavellite
Hardness: 4
Garmite
Garnet
Hardness: 7
Garrelsite
Hardness: 6
Garronite-ca
Hardness: 4 - 5
Garronite-na
Gartrellite
Hardness: 4.5
Garutiite
Garyansellite
Hardness: 4
Gasparite-(ce)
Hardness: 5
Gasparite-(la)
Gatedalite
Gatehouseite
Hardness: 4
Gatelite-(ce)
Hardness: 6 - 7
Gatewayite
Hardness: 2
Gatumbaite
Hardness: 4 - 5
Gaudefroyite
Hardness: 6
Gaultite
Hardness: 6
Gauthierite
Gayite
Hardness: 4 - 5
Gaylussite
Hardness: 2.5
Gazeevite
Hardness: 4.5
Gearksutite
Hardness: 2
Gebhardite
Hardness: 3
Gedrite
Hardness: 5.5 - 6
Geerite
Hardness: 3.5 - 4
Geffroyite
Hardness: 2.5
Gehlenite
Hardness: 5 - 6
Geigerite
Hardness: 3
Geikielite
Hardness: 5 - 6
Gelosaite
Hardness: 3
Geminite
Hardness: 3 - 3.5
Gengenbachite
Hardness: 2
Genkinite
Hardness: 5.5 - 6
Genplesite
Hardness: 3
Genthelvite
Hardness: 6 - 6.5
Geocronite
Hardness: 2.5 - 3
Georgbarsanovite
Georgbokiite
Hardness: 4
George-ericksenite
Hardness: 3 - 4
Georgechaoite
Hardness: 5
Georgeite
Hardness: 1 - 2
Georgerobinsonite
Georgiadèsite
Hardness: 3.5
Gerasimovskite
Hardness: 2
Gerdtremmelite
Gerenite-(y)
Hardness: 5
Gerhardtite
Hardness: 2
Germanite
Hardness: 4
Germanocolusite
Hardness: 4.5 - 5
Gersdorffite
Hardness: 5.5
Gersdorffite-p213
Gersdorffite-pa3
Hardness: 5.5
Gersdorffite-pca21
Gerstleyite
Hardness: 2.5
Gerstmannite
Hardness: 4.5
Geschieberite
Hardness: 2
Getchellite
Hardness: 1.5 - 2
Geversite
Hardness: 4.5 - 5
Ghiaraite
Giacovazzoite
Gianellaite
Hardness: 3
Giannettite
Gibbsite
Hardness: 2.5 - 3
Giessenite
Hardness: 2.5
Giftgrubeite
Hardness: 3.5
Gilalite
Hardness: 2
Gillardite
Gillespite
Hardness: 4
Gillulyite
Hardness: 2 - 2.5
Gilmarite
Hardness: 3
Giniite
Hardness: 3 - 4
Ginorite
Hardness: 3.5
Giorgiosite
Giraudite-(zn)
Girvasite
Hardness: 3.5
Gismondine
Gismondine-ca
Gittinsite
Hardness: 3.5 - 4
Giuseppettite
Hardness: 6 - 7
Gjerdingenite-ca
Gjerdingenite-fe
Gjerdingenite-mn
Hardness: 5
Gjerdingenite-na
Gladite
Hardness: 2 - 3
Gladiusite
Hardness: 4 - 4.5
Gladkovskyite
Glagolevite
Glauberite
Hardness: 2.5 - 3
Glaucocerinite
Hardness: 1
Glaucochroite
Hardness: 6
Glauconite
Glaucophane
Hardness: 5 - 6
Glaukosphaerite
Hardness: 3 - 4
Glikinite
Glucine
Hardness: 5
Glushinskite
Gmalimite
Gmelinite
Gmelinite-ca
Hardness: 4.5
Gmelinite-k
Hardness: 4.5
Gmelinite-na
Hardness: 4.5
Gobbinsite
Hardness: 4
Gobelinite
Godlevskite
Hardness: 4 - 5
Godovikovite
Hardness: 2
Goedkenite
Hardness: 5
Goldfieldite
Hardness: 3 - 3.5
Goldichite
Hardness: 2.5
Goldmanite
Hardness: 6 - 7
Goldquarryite
Hardness: 3 - 4
Goldschmidtite
Golyshevite
Hardness: 5.5
Gonnardite
Hardness: 4 - 5
Gonyerite
Hardness: 2.5
Goosecreekite
Hardness: 4.5
Gorbunovite
Gorceixite
Hardness: 6
Gordaite
Hardness: 2.5
Gordonite
Hardness: 3.5
Gorerite
Görgeyite
Hardness: 3.5
Gormanite
Hardness: 4 - 5
Gortdrumite
Hardness: 3.5 - 4
Goryainovite
Hardness: 4
Goslarite
Hardness: 2 - 2.5
Gottardiite
Gottlobite
Hardness: 4.5
Götzenite
Hardness: 5.5 - 6
Goudeyite
Hardness: 3 - 4
Gowerite
Hardness: 3
Goyazite
Hardness: 4.5 - 5
Graemite
Hardness: 3 - 3.5
Graeserite
Hardness: 5.5
Graftonite
Hardness: 5
Graftonite-(ca)
Hardness: 5
Graftonite-(mn)
Hardness: 5
Gramaccioliite-(y)
Hardness: 6
Grammatikopoulosite
Grandaite
Grandidierite
Hardness: 7.5
Grandreefite
Hardness: 2.5
Grandviewite
Hardness: 2
Grantsite
Hardness: 1 - 2
Graphite
Hardness: 1 - 2
Graţianite
Gratonite
Hardness: 2.5
Grattarolaite
Graulichite-(ce)
Gravegliaite
Grayite
Grechishchevite
Hardness: 2.5
Greenalite
Hardness: 2.5
Greenlizardite
Greenockite
Hardness: 3 - 3.5
Greenwoodite
Hardness: 5
Gregoryite
Greifensteinite
Greigite
Hardness: 4 - 4.5
Grenmarite
Hardness: 4.5
Grguricite
Griceite
Hardness: 4.5
Grigorievite
Hardness: 5
Grimaldiite
Hardness: 3.5 - 4.5
Grimmite
Griphite
Hardness: 5.5
Grischunite
Hardness: 5
Groatite
Hardness: 3
Grokhovskyite
Grootfonteinite
Grossite
Grossmanite
Groutite
Hardness: 3.5 - 4
Grumantite
Hardness: 4 - 5
Grumiplucite
Grundmannite
Hardness: 2 - 2.5
Grunerite
Hardness: 5 - 6
Gruzdevite
Hardness: 4 - 4.5
Guanacoite
Hardness: 3
Guanajuatite
Hardness: 2.5 - 3
Guanine
Hardness: 1 - 2
Guarinoite
Hardness: 1.5 - 2
Gudmundite
Hardness: 5.5 - 6
Guérinite
Hardness: 1.5
Guettardite
Hardness: 4
Gugiaite
Hardness: 5
Guidottiite
Hardness: 4 - 4.5
Guildite
Hardness: 2.5
Guilleminite
Hardness: 2
Guimarãesite
Hardness: 4.5
Guite
Gungerite
Gunningite
Hardness: 2.5
Günterblassite
Hardness: 4
Gunterite
Hardness: 1
Gupeiite
Hardness: 5
Gurimite
Gustavite
Hardness: 3.5
Gutkovaite-mn
Hardness: 5
Guyanaite
Gwihabaite
Hardness: 2
Gysinite-(nd)
Hardness: 4 - 4.5
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