Mineral (Specifically A Cryptocrystalline Variety Of Quartz)

Chert (specifically Flint or Common Chert)

Microcrystalline Quartz (SiO2)

Purple Dyed Agate Geode (Banded Chalcedony)

Silicon Dioxide (SiO2) - variety: Agate

Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite)

Orbicular Quartz Diorite / Tonalite

Chert (variant of Flint)

Chert (SiO2)

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Chert (specifically Jasper or Flint variant)

Microcrystalline Quartz (SiO2)

Chert (with Quartz Vein)

Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)

Lepidolite with Quartz

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

Green Aventurine (Carved)

Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)

Chert (Quartz Variety)

Silicon Dioxide (SiO2)

Emerald

Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Chert (Green variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Diopside (likely Chromian Diopside)

Diopside, part of Clinopyroxene family of inosilicates. Chemical formula: CaMgSi2O6. The green variety is often Chromian Diopside due to chromium impurities.

Jasper

Jasper (Cryptocrystalline Quartz, SiO2)

Chert (Flint)

Microcrystalline or cryptocrystalline quartz (SiO2)

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Tiger's Eye (specifically Blue Tiger's Eye / Falcon's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Quartz

Quartz (SiO₂)

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (Microcrystalline Quartz), SiO2

Red Jasper (possibly)

Jasper (a variety of Chalcedony, SiO2)

Serpentine

Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)

Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Chert (Smooth River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Jasper (with Manganese or Iron inclusions)

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartz Geode

Silicon Dioxide (SiO2)

Chert (Flint Nobule)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)