Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Green Jasper

Microcrystalline Quartz (SiO2)

Jasper in Quartz (River Cobble)

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Raw gold nugget or gold-bearing quartz

Native gold (Au), possibly with quartz (SiO₂) and iron-oxide staining

Weathered iron-rich rock, possibly basalt or ironstone

Uncertain; likely weathered basalt (plagioclase–pyroxene) or hematite/goethite-bearing ironstone

Riverstone Jasper (Chalcedony)

Silicon Dioxide (SiO2)

Picture Jasper

Silicified sedimentary or volcanic rock (primarily SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Smoky quartz

Quartz (SiO₂), brown-to-gray smoky variety

Polished orbicular jasper (likely ocean jasper)

Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions

Pink Satin Spar (Satin Spar Selenite Dyed)

Gypsum (CaSO4·2H2O)

Dyed blue quartz or druzy geode (likely)

Quartz, silicon dioxide (SiO₂), probably artificially colored

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Polished blue stone, likely sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly blue-dyed jasper or lapis lazuli

Chalcedony (Jasper/Agate mix)

Quartz (microcrystalline SiO2)

Chalcedony (Agate / Jasper Pebble)

Silicon Dioxide (SiO2)

Tiger Iron

Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)

Yellow Jasper (Chert) Pebble

Silicon Dioxide (SiO2) with Iron Oxides

Polished brown jasper

Jasper (microcrystalline quartz, SiO₂), likely iron-oxide-rich variety

Heart-shaped Jasper / Chert Pebble

Microcrystalline Quartz (SiO2)

Chert (Commonly known as Flint/Jasper)

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Yellow Quartz / Chalcedony

Silicon Dioxide (SiO2)

Chert Nodule

Microcrystalline Quartz (SiO2)

Black Jasper with Quartz

Silicon Dioxide (SiO2) with impurities

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Red jasper pebble

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

Dark river pebble (likely basalt or andesite)

Fine-grained mafic/intermediate volcanic rock; commonly basalt (plagioclase ± pyroxene/olivine)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Basalt

Fine-grained mafic volcanic rock, chiefly plagioclase feldspar, pyroxene, and commonly olivine

Chert

Cryptocrystalline Quartz (SiO2)

Jasper Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide Impurities

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)

Yellow Quartz (Citrine/Yellow Jasper)

Silicon Dioxide (SiO2)

Hematite / Jasper

Iron(III) oxide (Fe2O3) in Quartz (SiO2)

Red Jasper

SiO2 (Microcrystalline Quartz)

Blue Impression Jasper beads

Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions

Decorative polished pebbles

Likely mixed quartz-rich lithologies, including quartzite, jasper, and/or basalt

Tumbled red jasper and blue-green turquoise (likely dyed or stabilized)

Red jasper: microcrystalline quartz, SiO₂, colored by iron oxides; turquoise: hydrated copper-aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Tumbled jasper pebble

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

Jasper and Quartz Pebble

Silicon Dioxide (SiO2) microcrystalline quartz variety

Red Howlite (Dyed)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5) with Red Dye