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

Carnelian

Carnelian (Chalcedony / Quartz variety, SiO2)

Tumbled reddish-brown stone, likely jasper

Jasper (microcrystalline quartz, SiO₂), possibly red jasper or jasper-rich chert

Red jasper (likely brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Tumbled yellow-orange chalcedony (likely carnelian or honey agate)

Microcrystalline quartz, SiO₂; orange coloration commonly from iron oxides

Green Banded Agate

Agate (Variety of Chalcedony/Quartz), SiO2

Polished leopard-skin jasper

Jasper (microcrystalline quartz, SiO₂), commonly orbicular or brecciated varieties

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Tumbled yellow chalcedony (likely yellow jasper or quartz)

Microcrystalline quartz, SiO₂; probable chalcedony/jasper variety

Yellow Jasper

Silicon dioxide (SiO2)

Red jasper-like chalcedony pebble

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

Polished carnelian agate

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

Red Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Dragon Blood Jasper

SiO2

Red Jasper (Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled jasper

Microcrystalline quartz (SiO₂), commonly iron-oxide-bearing chalcedony

Polished/tumbled brown-and-white jasper

Microcrystalline quartz (SiO₂), commonly called jasper; likely brecciated or banded jasper

Carnelian

Carnelian (SiO2 - Silicon Dioxide)

Tumbled carnelian (red chalcedony)

Carnelian, a microcrystalline variety of quartz (SiO₂)

Polished jasper or iron-stained chert

Microcrystalline quartz (SiO₂), commonly chalcedony with iron-oxide staining

Tumbled brown jasper (likely common jasper or chert)

Microcrystalline quartz, SiO₂, chiefly chalcedony/quartz with iron-oxide impurities

Tumbled yellowish quartz or chalcedony

Quartz/chalcedony, SiO₂

Agate (specifically Chalcedony/Banded Agate)

Silicon Dioxide (SiO2)

Chert (specifically Novaculite)

Microcrystalline Quartz (SiO2)

Bloodstone

Chalcedony quartz variety (SiO2) with inclusions

Blue Lace Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Raw Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Polished red-and-cream jasper

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

Red-orange jasper pebble

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

Polished red jasper (likely brecciated or opaque chalcedony)

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

Tumbled jasper pebble

Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities

Polished ocean jasper / orbicular jasper (likely)

Microcrystalline quartz (chalcedony), commonly with iron-oxide and other mineral inclusions

Brown botryoidal chalcedony (likely iron-stained agate)

Microcrystalline quartz, SiO₂; chalcedony/agate variety

Honey/brown agate (chalcedony)

Microcrystalline quartz, SiO₂; likely translucent agate or chalcedony

Chert (Jasper influence)

Microcrystalline Quartz (SiO2)

Tumbled jasper (likely brecciated or orbicular jasper)

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

Gray Agate

Cryptocrystalline Quartz (SiO2)

Tumbled quartz-rich chalcedony (likely carnelian or orange jasper)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Agate (Polished Cabochon Slice)

Silicon Dioxide (SiO2)

Chalcedony Pebble

Cryptocrystalline Quartz (SiO2)

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)