Man Made Glass (Often Grouped With Minerals In Lapidary)

Quartz pebble

Silicon Dioxide (SiO2)

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Limonite-stained Chert

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Petrified Wood

Silicified Wood (SiO2)

River Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)

Mixed Silicates and Oxides (predominantly SiO2 group minerals)

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

Jasper (Iron-stained Chalcedony)

SiO2 with Fe2O3 (Iron Oxide) impurities

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Chert (specifically Banded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Quartzite

Quartzite (SiO2)

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Fe2O3 (Hematite) impurities

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Eroded Brick or Pumice-like Scoria

Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)

Chert (and Jasper/Flint variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Milky Quartz

Silicon Dioxide (SiO2)

Azurite-Malachite with Limonite

Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Geode (Unopened)

Chalcedony/Quartz Geode (SiO2)

Malachite or Chrysocolla on Host Rock

Cu2(CO3)(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)

Chert (often called Flint)

Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)

Chert (Jasper/Common Opal transition)

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Amygdaloidal Rhyolite

Rhyolite (felsic volcanic rock) with amygdules

Chert (Tan/Brown variety)

Chert (Silicon Dioxide, SiO2)

Chert (River Siltstone/Quartzite type)

Microcrystalline Quartz (SiO2)

Obsidian

Obsidian (Volcanic Glass)

Moonstone

Orthoclase Feldspar (specifically showing adularescence)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Sodalite

Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)

Basalt Porphyry

Porphyritic Basalt

Liesegang Banded Sandstone (Wonderstone)

Ferruginous Sandstone with Liesegang Rings

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Jasper or Chert with Quartz Vugs

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)