Sedimentary (Jasper), Mineral (Aquamarine)

Jasper

Silicon Dioxide (SiO2)

Tumbled yellow jasper or chert

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

Polished brecciated jasper (likely ocean jasper or orbicular jasper)

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

Polished jasper pebble, likely brecciated or picture jasper

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

Jasper (Banded Jasper / Chert)

Silicon Dioxide (SiO2 with iron oxide inclusions)

Likely brown jasper or iron-stained chert

Microcrystalline quartz (SiO₂), with iron-oxide inclusions

Tumbled dark reddish-brown stone, possibly garnet or jasper

Indeterminate; likely almandine garnet (Fe₃Al₂Si₃O₁₂) or iron-rich jasper (microcrystalline SiO₂)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Diorite (Dalmatian Stone)

Phaneritic Plutonic Diorite

Yellow Jasper

Silicon Dioxide (SiO2) with Iron Hydroxide impurities

Tumbled mottled stone, likely serpentine or jasper

Probable serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or fine-grained jasper; identification is limited by the image

Brecciated jasper (likely ocean jasper or orbicular jasper)

Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and possibly carbonate inclusions

Yellow jasper (likely ocean jasper or brecciated jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions

Fancy Jasper

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Jasper

Jasper (Silicon Dioxide, SiO2)

Orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz/chalcedony, commonly called Ocean Jasper; predominantly SiO₂ with iron-oxide inclusions

Jasper

Microcrystalline Quartz (SiO2)

Jasper

Silicon dioxide (SiO2) with impurities

Jasper

Chalcedony (Microcrystalline Quartz) - SiO2

Green Jasper

Jasper (variety of Microcrystalline Quartz, SiO2)

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Tumbled jasper or porphyritic volcanic stone

Likely altered basalt/andesite with quartz, feldspar, and iron-oxide minerals

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Likely tumbled yellow jasper or iron-rich chert

Microcrystalline quartz (SiO₂), colored by iron oxides

Jasper

Jasper (Silicon Dioxide, SiO2)

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Orbicular jasper (possibly ocean jasper)

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

Picture Jasper

Silicon Dioxide (SiO2) with impurities

Jasper

Silicon Dioxide (SiO2)

Fancy Jasper (Butterfly Carving)

Silicon Dioxide (SiO2) with iron and manganese inclusions

Jasper

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled brown banded jasper

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

Polished red jasper beads

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

Jasper or Agate

Chalcedony (SiO2)

Dalmatian Stone (often called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Dalmatian Jasper

Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)

Polished jasper, likely ocean jasper or orbicular jasper

Jasper: microcrystalline quartz (SiO₂), commonly with chalcedony and iron-oxide inclusions

Jasper

Silicon Dioxide (SiO2) - a variety of Chalcedony (Cryptocrystalline Quartz)