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

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled green aventurine (probable)

Quartz aggregate, SiO₂, commonly containing fuchsite mica inclusions

Chert (Green variety)

Silicon Dioxide (SiO2)

Chert (Basanite / Jasperoid)

Microcrystalline Quartz (SiO2)

Smoky Quartz

Smoky Quartz (SiO2 - Silicon Dioxide with trace impurities of aluminum)

Citrine

Silicon Dioxide with iron impurities (SiO2)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Tumbled brown quartz/chert pebble

Microcrystalline quartz (SiO₂), possibly chert or jasper

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Chert Nodule

Microcrystalline Quartz (SiO2)

River Pebble (Sandstone / Quartzite)

Sedimentary rock (Quartz arenite / Quartzite pebble)

Banded Chert

Chert (Silicon Dioxide, SiO2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Jasper

Silicon dioxide (SiO2)

Chert (specifically Flint or Gray Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (specifically varieties like Chalcedony or Flint)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)3Si3O10(OH)2)

Tumbled green aventurine (probable)

Quartz-rich aventurine; SiO₂ with dispersed fuchsite mica or other green inclusions

Jasper

Silicon dioxide (SiO2) with impurities

Ferruginous Quartz (Agatized/Iron-stained Quartzite)

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

Tumbled brecciated jasper

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions

Chert with Calcite Veins

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions

Green Aventurine

Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Chert / Flint

Silicon Dioxide (SiO2)

Yellow Chert (River Stone)

Microcrystalline Quartz (SiO2)

Banded Slate

Slate (Metamorphosed Siltstone/Mudstone)

Hematite

Iron(III) oxide (Fe2O3)

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartzite Pebble

Quartzite (SiO2 with minor impurities)

Black Jasper with Quartz

Silicon Dioxide (SiO2) with impurities

Shale or Argillite

Shale (sedimentary) / Argillite (metamorphic)

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2 with iron oxide inclusions

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)