Blue Dumortierite Quartz
Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)
mineral
Category
Metamorphic (Modified)
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Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
White Sapphire
Corundum (Al2O3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Yellow Aventurine (Yellow Quartz)
Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica
Mineral (variant of Quartz)
Moonstone (Feldspar)
Orthoclase or Oligoclase (KAlSi3O8)
mineral
Ruby in Zoisite
Anyolite (Zoisite with Corundum) Member of the Epidote Group
metamorphic
Green Quartz (Aventurine)
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Garnet (Almandine/Pyrope series)
Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)
mineral
Possible garnet-bearing rock
Likely almandine garnet in a mica-rich metamorphic matrix; exact identification is uncertain from the image
metamorphic
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz crystal cluster
Quartz (silicon dioxide, SiO₂)
mineral
Veined quartz-bearing metamorphic rock
Likely quartzite or quartz-veined hornfels; exact identification requires a fresh surface and tests
metamorphic
Likely amphibolite
Amphibolite, composed chiefly of hornblende and plagioclase feldspar
metamorphic
Quartz-rich metamorphic rock, likely quartzite
Quartzite; predominantly microcrystalline quartz (SiO₂), possibly with mica or iron-oxide impurities
metamorphic
Fuchsite
K(Al,Cr)2(AlSi3)O10(OH)2
mineral
Banded Slate
Metamorphic Argillite / Slate
metamorphic
Quartz Vein in Schist / Gneiss Metamorphic Matrix
Silicon Dioxide (SiO2) in metamorphic schist host rock
metamorphic
Quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Magnetite Ore
Magnetite (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Sapphirine in Magnesian Schist
Sapphirine: (Mg,Al)8(Al,Si)6O20
metamorphic
Reddish-brown crystalline rock, possibly weathered granite or garnet-bearing schist
Indeterminate; likely quartz–feldspar–mica rock with iron oxides, potentially garnet-bearing
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Rhodonite in Matrix
Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3
mineral
Magnetite (or Magnetic Iron Ore)
Magnetite (Fe3O4)
mineral
Likely milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite (River Stone)
Metamorphic Quartz (SiO2)
metamorphic
Garnet Amphibolite (or Garnet Gneiss)
Garnet amphibolite / Garnet-bearing metamorphic rock
metamorphic
Anthracite Coal
Anthracite (Carbon C)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with fuchsite inclusions)
Mineral
Rhodonite
Inosilicate, (Mn,Fe,Mg,Ca)SiO3
mineral
Rounded, banded metamorphic cobble
Likely gneiss or foliated quartz-rich metamorphic rock; exact identification is uncertain from the photograph.
metamorphic
Green Aventurine
SiO2
mineral
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Small quartz-rich pebble, possibly milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Tumbled green aventurine quartz
Aventurine quartz, silicon dioxide (SiO₂) with dispersed fuchsite or other mica inclusions
mineral
Corundum (Sapphire/Ruby in Matrix)
Aluminium oxide (Al2O3)
mineral
Magnetite
Magnetite (Fe3O4)
mineral