Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)

Tumbled orange chalcedony or quartzite

Microcrystalline quartz (SiO₂), possibly iron-stained chalcedony; exact identification requires testing

Polished orbicular jasper

Microcrystalline quartz (SiO₂) with iron-rich and altered volcanic inclusions

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Jasper (Red and Yellow Jasper)

SiO2 (Silicon Dioxide) with Iron Oxide inclusions

Jasper (Red Jasper)

Jasper (Silicon Dioxide, SiO2)

Tumbled carnelian

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)

Jasper (specifically Red Jasper or Iron-stained Chert)

Silicon dioxide (SiO2) with iron oxide inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or limonite inclusions

Dalmatian Jasper

Feldspar porphyry (Microcline and Quartz with Arfvedsonite spots)

Chert (Pink/Red variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Moss Agate

Moss Agate (a variety of Chalcedony, SiO ₂)

Carnelian

Carnelian (a variety of Chalcedony, SiO ₂)

Chert (Agatized/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Agate (or Chalcedony)

Silicon Dioxide (SiO2)

Polished brecciated jasper

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions

Chalcedony

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Agate in Rhyolite

Silicon Dioxide (Quartz/Chalcedony) in Volcanic Rock matrix

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

Dendritic Agate or Moss Agate Nodules (Septarian-like)

Chalcedony with mineral inclusions (SiO2)

Yellow Aventurine

Quartz (SiO2) with inclusions

Polished reddish-brown gemstone, likely carnelian

Carnelian: chalcedony, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Red Jasper

Chalcedony/Quartz (SiO2) with iron inclusions

Jasper (specifically Yellow or Bumblebee-like Jasper)

Silicon Dioxide (SiO2) with impurities

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Polished agate pebble (likely dyed or naturally banded chalcedony)

Chalcedony, microcrystalline SiO₂; agate is banded chalcedony

Polished carnelian

Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)

Rose Quartz

Quartz (SiO₂), specifically a variety of Quartz

Agate and Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Polished green-and-white jasper (likely ocean jasper or orbicular jasper)

Microcrystalline quartz/chalcedony (SiO₂) with chlorite, epidote, calcite, and iron-oxide inclusions

Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)

Calcium Carbonate (CaCO3)

Agate (specifically Waterline or Onyx-type Agate)

Silicon Dioxide (SiO2) - variety Chalcedony

Chalcedony (Agate and Carnelian varieties)

Silicon Dioxide (SiO2)

Chalcedony (Agate / Chert)

Silicon Dioxide (SiO2)

Blue Chalcedony

Silicon Dioxide (SiO2)

Chrysocolla in Quartz (Gem Silica)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled yellow jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Tumbled carnelian (red-orange chalcedony)

Carnelian, a microcrystalline variety of quartz; SiO₂

Chert / Flint

Microcrystalline quartz (SiO2)