Mineral_variety_of_chalcedony

Aquamarine (Pendant) and Jasper (Beads)

Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)

Jasper with Iron Staining

Silicon Dioxide (SiO2) with impurities

Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.

Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.

Chert (Common Opal/Chalcedony)

Microcrystalline Quartz (SiO2)

Jasper

Silicon Dioxide (SiO2) with iron and magnesium inclusions

Druzy Quartz Geode (Oco or Moroccan variety)

Silicon Dioxide (SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)

Chalcedony (Common Opal/Chert variety)

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or iron oxide inclusions

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Green Jasper

Silicon Dioxide (SiO2) with impurities

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Green Agate

Silicon dioxide (SiO₂)

Blue Moss Agate / Blue Chalcedony

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Jasper (likely Lake Superior Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Milky Quartz

Quartz (SiO2)

Banded Agate (specifically Eye Agate / Chalcedony)

Agate (Cryptocrystalline variety of Quartz, SiO2)

Chalcedony (specifically Agate or Common Opal variety)

Cryptocrystalline Silica (SiO2)

Dragon Blood Jasper

Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))

Quartz (Variety: Citrine or Tumbled Chalcedony)

Silicon Dioxide (SiO2)

Dendritic Agate (or Dendritic Opal)

SiO2 (for Agate), SiO2·nH2O (for Opal)

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Quartz Pebble (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Tiger's Eye (commonly referred to as Blue/Gold Tiger's Eye)

Tiger's Eye is a variety of Chalcedony (cryptocrystalline quartz), SiO2, exhibiting chatoyancy. The blue variety is often called Hawk's Eye.

Chert (variations include Flint/Chalcedony)

Chert (SiO2 - Silicon Dioxide)

Red Jasper or Chert

Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Chert / Flint (a variety of Chert)

Chert (SiO2)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.

Banded Agate (specifically Moss Agate or Plume Agate variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Red Jasper (beads)

Silicon Dioxide (SiO2) with iron inclusions

Jasper

Silicon Dioxide (SiO2)

Black Onyx

Silicon dioxide (SiO2) with parallel banded structure

Banded Jasper (possibly "Picture Jasper")

Jasper (a microcrystalline variety of Quartz / Silicon Dioxide - SiO2)

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)