Mineral (Variety Of Chalcedony)

Tumbled orange chalcedony or carnelian

Microcrystalline quartz (SiO₂), likely iron-bearing chalcedony

Tumbled carnelian/chalcedony pebbles

Chalcedony, microcrystalline quartz (SiO₂), likely iron-colored carnelian

Polished agate/chalcedony fragment

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony or agate

Tumbled brown jasper (likely brecciated or scenic jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions

Polished brown chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper with vugs

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely iron-stained jasper/chert

Red jasper pebble

Microcrystalline quartz (SiO₂), colored by iron oxides; possibly brecciated jasper

Tumbled brown chalcedony or jasper pebble

Microcrystalline quartz, SiO₂; possibly iron-rich jasper

Tumbled jasper, likely mookaite or brecciated jasper

Microcrystalline quartz (SiO₂), with iron-oxide inclusions

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Tumbled red jasper (probable)

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Banded agate (likely mossy/chalcedony-rich agate)

Microcrystalline quartz, SiO₂ (chalcedony); bands may include iron oxides and inclusions

Tumbled carnelian (red chalcedony)

Carnelian, a microcrystalline variety of quartz (SiO₂)

Yellow jasper / silicified breccia

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide staining and possible breccia fragments

Polished plume agate

Chalcedony (microcrystalline SiO₂) with iron-oxide inclusions

Tumbled Agate and Chalcedony

Cryptocrystalline Quartz (SiO2)

Agate (Moss or Green Agate)

Silicon Dioxide (SiO2)

Tumbled brown agate

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Polished orange agate/jasper cabochon

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide coloration; exact variety uncertain

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides.

Dragon Blood Jasper

SiO2

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Jasper

Silicon Dioxide (SiO2) with impurities

Banded Agate

Agate (Silicon Dioxide, SiO2)

Yellow Chalcedony (Agate)

Silicon Dioxide (SiO2)

Jasper

Silicon Dioxide (SiO2)

Agate (Polished Sphere)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Carnelian)

Cryptocrystalline Quartz (SiO2)

Jasper (specifically Owyhee or Picture Jasper variety)

Jasper (Silicon Dioxide, SiO2)

Leopard Skin Jasper

Chalcedony (cryptocrystalline Quartz)

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Botryoidal chalcedony (likely agate/jasper variety)

Microcrystalline quartz, SiO₂

Quartz (Chalcedony/Agate nodule)

Silicon dioxide (SiO2)

Tumbled jasper (likely ocean or picture jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral impurities

Polished jasper pebble

Microcrystalline quartz (chalcedony), chiefly SiO₂, colored by iron oxides

Tumbled carnelian agate

Microcrystalline quartz (chalcedony), SiO₂; iron-oxide colored

Tumbled yellow jasper or silicified rock fragment

Microcrystalline quartz (chalcedony), SiO₂, likely iron-oxide colored

Tumbled brown jasper

Microcrystalline quartz (chalcedony), chiefly SiO₂, colored by iron oxides and other inclusions

Tumbled green agate (likely moss or chalcedony agate)

Cryptocrystalline quartz, SiO₂; likely green chalcedony with possible chlorite or iron inclusions

Polished pink banded agate

Banded chalcedony (microcrystalline quartz, SiO₂), likely dyed or naturally vivid pink

Tumbled jasper (likely brown/yellow jasper)

Microcrystalline quartz, SiO₂, typically with iron-oxide and clay impurities

Tumbled jasper or weathered chert

Microcrystalline quartz (SiO₂), likely jasper/chert with iron-oxide impurities