Man Made Glass

Quartz

Quartz (SiO₂)

Rhodonite

Rhodonite (MnSiO3)

Quartzite

Quartzite (predominantly SiO2)

Quartz (White/Milky Pebble)

Silicon Dioxide (SiO2)

River Quartzite Spheroid

Recrystallized Orthoquartzite (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Yellow Quartzite

Quartzite (SiO2)

Granite Cobble/Pebble

Granite

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Granite

Granite (a plutonic rock)

Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Milky Quartz (with trace inclusions)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (chiefly SiO2)

Quartz

Quartz (SiO₂)

Coquina

Bioclastic Limestone

Quartz

Silicon Dioxide (SiO2)

Orange Quartzite (Tumble-polished)

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Chert (specifically Flint or Common Chert)

Chert (Cryptocrystalline Silica, SiO2)

Obsidian

Volcanic Glass (SiO2 rich)

Crushed Limestone

Calcium Carbonate (CaCO3)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Calligraphy Stone

Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Smoky Quartz (Faceted Beads)

Silicon Dioxide (SiO2)

Orange Quartzite

Metamorphic Quartzite (primarily SiO2)

Quartzite (River Cobble)

Quartzite (predominantly SiO2)

Chert (Agate/Flint variant)

Microcrystalline Quartz (SiO2)

Chert (Cherty Limestone / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)