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.
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Alum-(k)
Hardness: 2
Alum-(na)
Hardness: 3
Aluminite
Hardness: 1 - 2
Aluminium
Hardness: 2 - 3.5
Alumino-oxy-rossmanite
Aluminoceladonite
Aluminocerite-(ce)
Hardness: 5
Aluminocopiapite
Hardness: 2 - 3
Aluminocoquimbite
Aluminomagnesiohulsite
Hardness: 6
Aluminopyracmonite
Aluminosugilite
Hardness: 6 - 6.5
Alumoåkermanite
Hardness: 4.5 - 5
Alumoedtollite
Alumohydrocalcite
Hardness: 2.5
Alumoklyuchevskite
Hardness: 2 - 2.5
Alumotantite
Hardness: 7.5
Alumovesuvianite
Hardness: 6.5
Alunite
Hardness: 3.5 - 4
Alunogen
Hardness: 1.5 - 2
Alvanite
Hardness: 3 - 3.5
Alwilkinsite-(y)
Hardness: 2 - 2.5
Amakinite
Hardness: 3.5 - 4
Amamoorite
Amarantite
Hardness: 2.5
Amarillite
Hardness: 2.5 - 3
Amblygonite
Hardness: 5.5 - 6
Ambrinoite
Ameghinite
Hardness: 2 - 3
Amesite
Hardness: 2.5 - 3
Amicite
Hardness: 4.5
Aminoffite
Hardness: 5.5 - 6
Ammineite
Hardness: 1
Ammonioalunite
Hardness: 2 - 3
Ammonioborite
Ammoniojarosite
Hardness: 3.5 - 4.5
Ammoniolasalite
Hardness: 1
Ammonioleucite
Hardness: 5.5 - 6
Ammoniomagnesiovoltaite
Ammoniomathesiusite
Hardness: 2.5
Ammoniotinsleyite
Hardness: 4
Ammoniovoltaite
Hardness: 3.5
Ammoniozippeite
Hardness: 2.5
Amphibole
Amstallite
Hardness: 3 - 5
Anandite
Hardness: 3 - 4
Anapaite
Hardness: 3.5
Anastasenkoite
Anatase
Hardness: 5.5 - 6
Anatolyite
Hardness: 4.5
Ancylite-(ce)
Hardness: 4 - 4.5
Ancylite-(la)
Hardness: 4 - 4.5
GemAndalusite
Hardness: 6.5 - 7.5
Andersonite
Hardness: 2.5
Andorite (iv/vi)
Andorite Iv
Andorite Vi
Andreadiniite
Andrémeyerite
Hardness: 5.5
Andreyivanovite
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