Mineral (Variety Of Chalcedony)

Polished multicolored jasper cabochon (likely brecciated or picture jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and other inclusions

Polished brecciated jasper (likely picture jasper)

Silica-rich microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and clay inclusions

Polished orbicular jasper

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

Tumbled carnelian

Carnelian, orange chalcedony (microcrystalline SiO₂)

Jasper (Iron-stained Quartzite/Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Bloodstone (Heliotrope)

Cryptocrystalline Quartz (SiO2) with inclusions of Hematite or Chlorite

Tumbled carnelian/chalcedony

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony

Tumbled agate/chalcedony (likely moss or plume agate)

Microcrystalline quartz, SiO₂, chiefly chalcedony with possible iron-oxide inclusions

Tumbled amber-brown chalcedony (probable carnelian/ag ate)

Microcrystalline quartz, SiO₂; likely iron-stained chalcedony (carnelian)

Red jasper-like chalcedony pebble

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

Polished banded agate

Microcrystalline quartz (chalcedony), SiO₂

Jasper (likely brecciated jasper)

Microcrystalline quartz/chalcedony (SiO₂), with possible iron-oxide coloring

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Ocean Jasper

Silicon dioxide with impurities (SiO2 + impurities)

Small tumbled stone, possibly moss agate

Likely chalcedony (microcrystalline SiO₂); exact identification is uncertain from the image

Polished banded jasper (likely picture jasper)

Microcrystalline quartz, chiefly SiO₂; jasper with iron-oxide staining

Polished orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz (SiO₂), commonly called orbicular jasper or ocean jasper

Polished jasper or agate pebble

Microcrystalline quartz (SiO₂), likely jasper/chalcedony; exact variety is uncertain from the photo

Polished ocean jasper / orbicular jasper (likely)

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

Tumbled carnelian/chalcedony

Orange chalcedony (microcrystalline quartz), SiO₂; possibly iron-stained agate

Agate (Carnelian / Chalcedony)

Silicon Dioxide (SiO2)

Tumbled jasper, likely red/brown jasper

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

Tumbled brown agate

Microcrystalline quartz (SiO₂), variety of chalcedony

Chalcedony

Silicon dioxide (SiO2)

Tumbled brown jasper

Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper

Likely fire agate

Botryoidal chalcedony (microcrystalline SiO₂) with iron-oxide layers

Polished agate (likely blue-gray chalcedony)

Microcrystalline quartz, SiO₂; chalcedony, possibly banded agate

Rough agate (likely banded chalcedony)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide color banding

Polished banded agate

Banded chalcedony, microcrystalline quartz (SiO₂)

Tumbled carnelian and related stones

Carnelian: orange-red chalcedony, microcrystalline SiO₂; the dark central piece may be hematite- or jasper-rich material

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite inclusions

Banded Jasper

Silicon Dioxide with Iron Oxide impurities (SiO2)

Bloodstone

Heliotrope

Carnelian

Silicon dioxide (Chalcedony variety)

Carnelian

Silicon Dioxide (Chalcedony variety)

Bloodstone

Chalcedony quartz variety (SiO2)

Carnelian (Tumbled)

Carnelian (variety of Chalcedony, SiO2)

Carnelian Agate

Silicon Dioxide (Chalcedony variety)

Carnelian

Carnelian (variety of Chalcedony, SiO2)

Agate

Agate (a variety of Chalcedony, SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Carnelian (polished)

Carnelian (variety of Chalcedony), SiO2