Mineralish (Variety Of Chalcedony)

Orange chalcedony or tumbled carnelian fragment

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

Yellow-orange chalcedony (possibly carnelian)

Microcrystalline quartz, SiO₂; orange coloration commonly from iron oxides

Tumbled amber-colored agate or chalcedony

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

Tumbled gray-blue agate/chalcedony

Microcrystalline quartz (SiO₂), likely banded chalcedony or agate

Tumbled carnelian/chalcedony

Chalcedony (microcrystalline quartz), SiO₂; reddish color from iron oxides

Quartzite with Chalcedony

Metamorphosed Quartz-rich Sandstone (SiO2)

Polished agate slab (likely moss or plume agate)

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

Yellow Agate

Silicon Dioxide (SiO2)

Yellow Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper

Silicon dioxide (SiO2)

Red Jasper with Quartz and Hematite

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Onyx Marble (Banded Calcite)

Calcite (Calcium Carbonate, CaCO3)

Tumbled brown jasper (likely brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Yellow jasper (likely iron-stained chalcedony)

Microcrystalline quartz, SiO₂, commonly colored by iron oxides/hydroxides

White Agate (Chalcedony)

Chalcedony (SiO2)

Yellow Jasper

Chalcedony (SiO2)

Honey-colored chalcedony (rough agate/chert)

Microcrystalline quartz, SiO₂; likely chalcedony with iron-oxide staining

Tumbled Black Stone

Unknown, possibly Obsidian, Onyx, or Tourmaline

Jasper

Jasper (Silicon Dioxide, SiO2)

Agate

Chalcedony (SiO2)

Chalcedony

Silicon dioxide (SiO2) - Microcrystalline quartz

Tumbled brown agate (possible carnelian or chalcedony)

Microcrystalline quartz, SiO₂; agate is banded chalcedony

Jasper (likely brecciated jasper)

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

Jasper (likely brecciated or chalcedony-rich jasper)

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Polished banded jasper (likely picture jasper)

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

Polished orange agate beads

Chalcedony, microcrystalline quartz (SiO₂), commonly sold as agate

Agate (chalcedony), likely a cut nodule

Agate, a banded variety of microcrystalline quartz (SiO₂); associated iron oxides stain the rough outer matrix.

Red jasper (likely tumbled)

Microcrystalline quartz, chiefly SiO₂, colored red by iron oxides

Tumbled jasper

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

Tumbled yellow jasper

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

Agate

Cryptocrystalline quartz, SiO2

Tumbled yellow chalcedony (probable)

Chalcedony, microcrystalline quartz (SiO₂), possibly iron-stained jasper

Sardonyx or Carnelian Agate

Silicon Dioxide (SiO2) with iron impurities

Red Jasper (Brecciated)

Silicon Dioxide with Iron inclusions (SiO2)

Jasper (Red/Brown)

Microcrystalline Quartz (SiO2) with Iron Oxide inclusions

Tumbled brown jasper

Microcrystalline quartz/chalcedony (SiO₂), commonly iron-oxide stained

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Yellow Jasper

Silicon dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with Iron Oxide impurities

Chalcedony (likely agate)

Microcrystalline quartz, SiO₂; agate is banded chalcedony