Quartz (Smoky/Milky)
Silicon Dioxide (SiO2)
mineral
Category
Synthetic Or Natural Fiber
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Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Shale with Siltstone layering
Sedimentary Clastic Rock (Mudstone/Shale)
sedimentary
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Smoky Quartz on Feldspar (Granite Pegmatite)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
igneous
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Shale
Fissile mudstone (rich in clay minerals and quartz)
sedimentary
Natural Diamond (Faceted)
Diamond (pure carbon crystal, C)
mineral
Sandstone (lithic wacke)
Arenite / Lithic Wacke (mostly SiO2 with rock fragments)
sedimentary
Smoky Quartz with Feldspar
Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)
mineral
Basalt
Basalt (dominated by plagioclase feldspar and pyroxene)
igneous
Sandstone
Arenite
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily Quartz Arenite)
sedimentary
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral
Sandstone
Arenite/Quartz Arenite
sedimentary
Fossilized Bored Limestone
Limestone with Ichnofossils (Gastrochaenolites or Entobia)
sedimentary
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Corundum (Sapphire)
Corundum (Al2O3)
mineral
Granite
Granite
igneous
Magnetite / Ironstone
Magnetite (Fe3O4)
mineral
Magnetite / Ironstone Pebble
Magnetite (Fe3O4)
mineral
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
River Agate (Chert/Chalcedony)
Cryptocrystalline Quartz (SiO2)
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Herkimer Diamond (Quartz Crystal)
Silicon Dioxide (SiO2)
mineral
Basalt Beach Pebble
Basalt (Mafic volcanic rock)
igneous
Wishing Rock (Quartz Vein in Host Rock)
Silicon dioxide (SiO2) vein in various host rocks
Igneous/Sedimentary/Metamorphic with Mineral Vein
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Magnetite (likely with weathered Limonite/Hematite)
Magnetite (Fe3O4) with iron oxide weathering
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Yellow Quartz
SiO2 (Silicon Dioxide)
mineral
Diamond in Kimberlite
Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)
igneous