Mineral (Variety Of Chalcedony)

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Carnelian

Chalcedony (SiO2)

Jasper

Silicon dioxide (SiO2)

Black onyx-style bead bracelet

Likely polished black chalcedony (microcrystalline quartz, SiO₂); the beads may also be dyed agate or another black stone.

Polished carnelian agate

Microcrystalline quartz, SiO₂, commonly chalcedony with iron-oxide coloring

Tumbled carnelian (orange chalcedony)

Carnelian, a microcrystalline quartz variety; SiO₂, commonly colored by dispersed iron oxides

Raw carnelian/chalcedony

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

Polished agate (likely moss or plume agate)

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

Tumbled Agate

Silicon Dioxide (SiO2)

Tumbled quartz-rich stone, likely brown agate or jasper

Microcrystalline silica (chalcedony/quartz, SiO₂), possibly iron-stained agate or jasper

Tumbled brown jasper (likely common jasper or chert)

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

Chalcedony (Agate/Carnelian pebbles)

Cryptocrystalline Quartz (SiO2)

Agate

Silicon dioxide (SiO2)

Quartz (Agate/Chalcedony)

Silicon Dioxide (SiO2)

Agate (Carnelian-Blue Agate mix)

Silicon Dioxide (SiO2)

Agate (Chalcedony Variation)

Silicon Dioxide (SiO2)

Tumbled jasper, likely red jasper

Microcrystalline quartz (SiO₂), chalcedony variety with iron-oxide impurities

Gray chalcedony (microcrystalline quartz)

Chalcedony, SiO₂; likely common gray/blue-gray variety

Orange chalcedony (likely carnelian)

Microcrystalline quartz, SiO₂; iron-bearing variety commonly called carnelian

Tumbled brown agate

Chalcedony (microcrystalline quartz), SiO₂, with iron-oxide coloration

Red jasper

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

Agate

SiO2

Yellow jasper (likely iron-stained chert or quartzite)

Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides

Tumbled Agate

Silicon Dioxide (SiO2)

Carnelian

Carnelian (SiO2 with iron oxide impurities)

Red Jasper

Silicon dioxide with hematite impurities (SiO2 + Fe2O3)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2

Banded Agate (Gray/Brown)

Silicon Dioxide (SiO2)

Carnelian

Carnelian (SiO2 with Iron Oxide impurities)

Agate

Silicon dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Chalcedony (Quartz Pebbles)

Silicon Dioxide (SiO2)

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Jasper Pendant

Silicon dioxide (SiO2) with impurities

Banded Agate

Chalcedony (SiO2 with impurities)

Blue Agate

Chalcedony (SiO2)

Blue Chalcedony

Silicon Dioxide (SiO2)

Banded Agate (specifically Carnelian Agate color)

Silicon Dioxide (SiO2) - variety of Chalcedony

Tumbled jasper (likely mookaite or brown/orange jasper)

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

Jasper and Agate (Polished Pebble)

Chalcedony (SiO2 with impurities)

Tumbled chalcedony (likely mossy/inclusion-rich variety)

Chalcedony, microcrystalline quartz (SiO₂)

Blue Lace Agate

Microcrystalline Quartz (Chalcedony), SiO2