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6 - 7 Hardness |
Aegirine
Albite (Feldspar)(mixtures of sodium and calcium aluminum
silicates)
Almandine (Garnet)
Andradite (Garnet)
Anorthoclase (Feldspar)
Celsian (Feldspar)
Cristobalite
Epidote
Fayalite (Olivine)
Forsterite (Olivine)
Franklinite
Garnet
Grossular (Garnet)
Hafnon
Jadeite
Kyanite
Magnetite
Marcasite
Microcline (Feldspar)
Olivine
Opal
Orthoclase (Feldspar)
Plagioclase Feldspar
Pyrite
Pyrope (Garnet)
Sanidine (Feldspar)
Spodumene
Zircon
Zoisite (Basic calcium aluminum silicate)
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