Eclogite
Eclogite (Omphacite-Garnet Metamorphic Rock)
metamorphic
Category
Mineraloid (Man Made Origin)
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Vesicular Basalt (Scoria)
Vesicular Basalt
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Shale with Siltstone layering
Sedimentary Clastic Rock (Mudstone/Shale)
sedimentary
Tiger's Eye (Small Polished Bead)
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Petrified Wood
Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)
sedimentary
Pink Quartzite
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Red Quartzite
Quartzite (primarily SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Marble
Metamorphic rock composed of Recrystallized Carbonate Minerals (chiefly CaCO3)
metamorphic
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Chert (or potentially massive Quartz/Quartzite)
SiO2 (Silicon Dioxide)
sedimentary (if chert) / metamorphic (if quartzite)
Blue Tiger's Eye (Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Planet Earth
Gaia (Silicate Terrestrial Planet)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Chert (with Quartz Veining)
Microcrystalline Quartz (SiO2)
sedimentary
Black Pearl (Tahitian-style Cultured Pearl)
Calcium Carbonate (Aragonite) with Conchiolin (CaCO3)
mineral
Moss Agate
Moss Agate (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is microcrystalline Quartz)
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Agate / Banded Chalcedony
Agate (Silicon Dioxide / SiO2)
mineral
Quartzite (Rounded Pebble)
Quartzite (predominantly SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Ocean Jasper (Sea Jasper)
Spherulitic Chalcedony (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Muscovite Schist
KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix
metamorphic
Quartz
Quartz (SiO₂)
Mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Banded Slate
Slate (Metamorphosed Siltstone/Mudstone)
metamorphic
Vesicular Basalt
Basalt (Mafic volcanic rock)
igneous
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary