Mineral (Specifically A Cryptocrystalline Variety Of Quartz)

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Fancy Jasper

Silicon Dioxide (SiO₂)

Banded Carnelian

Carnelian (Silicon Dioxide / SiO2)

Blue Lace Agate

Cryptocrystalline variety of Quartz (SiO2)

Red Jasper (with Quartz)

Silicon Dioxide (SiO2) with Hematite inclusions

Yellow Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Nodule fragment)

Silicon Dioxide (SiO2)

Agate Nodules

Cryptocrystalline Quartz (SiO2)

Quartz (Agate/Chalcedony variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert

Microcrystalline quartz (SiO2)

Banded Agate (specifically Carnelian Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)

Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates

Chert / Jasper

Microcrystalline Quartz (SiO2)

Leopard Skin Jasper

Chalcedony (cryptocrystalline Quartz)

Chert (Flint Nodules)

Microcrystalline Quartz (SiO2)

Chalcedony (Agate/Carnelian)

Cryptocrystalline Silicon Dioxide (SiO2)

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) - Variety of Chalcedony/Quartz

Red Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Chert / Jasper

Microcrystalline Quartz (SiO2)

Chert (and Flint)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Flint

SiO2 (Cryptocrystalline Quartz)

Chert (Jasper variety)

Chert (SiO2)

Banded Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Chert (Tripolitic Chert / Flint Nodules)

Microcrystalline Quartz (SiO2)

Flint

SiO2 (Cryptocrystalline Quartz / Chert)

Yellow Jasper

Cryptocrystalline Quartz (SiO2)

Red Jasper with Quartz

Microcrystalline Quartz (SiO2)

Jasper (or possibly Agate/Chalcedony) beads

SiO2 (Silicon Dioxide)

Sardonyx Cameo

Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz

Chalcedony (specifically Agate or Carnelian variety)

Cryptocrystalline Silica (SiO2)

Agate (Carnelian / Chalcedony)

Silicon Dioxide (SiO2)

Jasper (Zebra Jasper)

Silicon Dioxide (SiO2) with impurities

Yellow Jasper

Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz