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

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amethyst

Silicon Dioxide (SiO2) with Iron impurities

Chert (Jasper variety) with Iron Oxide staining

Cryptocrystalline Quartz (SiO2) with Goethite/Limonite impurities

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Chert (Yellow/Brown Jasper)

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO₂)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Chert (variously identified as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper

Microcrystalline Quartz (SiO2) with Hematite impurities

Yellow Quartz (Citrine/Yellow Jasper)

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Sandstone

Arenite (primarily Quartz, SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphic Quartz (SiO2)

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Jasper

Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions

Green Aventurine

Silicon dioxide (SiO2) with fuchsite inclusions

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Citrine Quartz

SiO2 (Silicon Dioxide with Iron impurities)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Hematite or Goethite

Limestone (Porous/Travertine variant)

Sedimentary Calcium Carbonate (CaCO3)

Quartzite Pebble (River Rock)

Quartzite (mainly SiO2)

Garnet and Quartz

Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)

Red Jasper (possibly Petrified Wood)

Silicon Dioxide (SiO2) with Hematite inclusions

Yellow Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with iron oxide (Limonite/Goethite) inclusions

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Sandstone

Arenite (Siliclastic sedimentary rock)

Milky Quartz

Silicon Dioxide (SiO2)

Chert / Flint

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone

Arenite (SiO2 with various cementing agents)

Opal

Hydrous silicon dioxide (SiO2·nH2O)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)