Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone or Limestone

Arenite or Calcareous Sedimentary Rock

Chert (specifically Blue or Grey Chert/Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Jasper-rich)

Microcrystalline/Cryptocrystalline Quartz (SiO2)

Chert (Smooth River Pebble)

Silicon Dioxide (SiO2)

Yellow Quartzite (River Stone)

Quartzite (primarily SiO2)

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

Yellow Quartzite Pebble

Quartzite (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone Beach Pebble

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)

Chert (Quartz Variety)

Microcrystalline Silica (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Amethyst (Agate/Chalcedony variety)

Silicon Dioxide (SiO2) with iron impurities

Chert (Nodular or Massive Variety)

Cryptocrystalline Quartz (SiO2)

Celestine (Celestite)

Strontium sulfate (SrSO4)

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Chert (Septarian or Nodular variety)

Microcrystalline Quartz (SiO2)

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Riverstone (Quartzite or Siltstone cobble)

Quartzite (primarily SiO2)

Citrine Quartz

Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities

Chert (Black Chert or Flint)

Silicon Dioxide (SiO2)

Coral Rock (Coquina)

Biogenic Limestone (Calcium Carbonate - CaCO3)

Chert (Green variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Anthracite Coal

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Jasper

Jasper (Silicon Dioxide) - SiO2

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Greenschist / Greenstone

Greenschist facies metabasite

Jasper

Agate/Jasper (Microcrystalline Quartz, SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Yellow Aventurine (or Citrine-colored Quartz)

Silicon Dioxide (SiO2) with inclusions

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Chert (Nodular or Fossiliferous)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Diamond

Diamond (pure carbon; C)