Sedimentary (Microcrystalline Silicate)

Tumbled jasper or altered chalcedony

Microcrystalline quartz (SiO₂), possibly jasper/chalcedony

Yellow Jasper (within host rock)

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Green Jasper / Metavesuvianite-bearing rock

Silica-rich microcrystalline quartz aggregate / Green Jasper

Green Jasper

Silicon Dioxide (SiO2) with impurities

Chert with Epidote and Jasper inclusions

SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Tumbled reddish-brown stone, possibly jasper or iron-rich quartzite

Uncertain from image; likely microcrystalline quartz (SiO₂) with iron-oxide inclusions

Green Jasper (Chert)

Microcrystalline Quartz (SiO2) with iron/clay inclusion

Jasper

Silicon dioxide (SiO2)

Jasper (Cream/Yellow variety)

Silicon Dioxide (SiO2) with impurities

Dendritic Jasper (Bumblebee like Agate)

Silicon Dioxide with inclusions (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with iron and silicate inclusions

Jasper with Quartz Vein

Silicon Dioxide (SiO2) with impurities

Jasper

Silicon dioxide (SiO2)

Green Jasper (with Quartz veining)

Jasper (Silica-rich microcrystalline variety of Quartz), formula: SiO2

Jasper

Silicon Dioxide (SiO2) with impurities

Chert (Jasper-like Silicate)

Silicon Dioxide (SiO2)

River Siltstone / Mudstone Pebble

Siltstone (composed of mixed silicate and carbonate minerals)

Jasper with Quartz Veining

Microcrystalline quartz (SiO2) with iron oxide impurities

Green Jasper (Agate-Jasper mixture)

Silicon Dioxide (SiO2) with impurities

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Chert (Jasper)

Silicon Dioxide (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Green Jasper

Silicon Dioxide (SiO2) with impurities

Weathered limestone pebble

Microcrystalline calcite (CaCO₃), possibly fossiliferous limestone

Chert (Green Chert or Jasper)

Microcrystalline Quartz (SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Banded Jasper / Yellow Jasper with Chlorite or Epidote inclusions

Silicon Dioxide (SiO2) with iron oxide and silicate impurities

Leopard skin jasper (orbicular jasper)

Microcrystalline quartz (SiO₂), commonly with iron-oxide and other silicate inclusions

Polished rainbow jasper (likely ocean/imperial jasper)

Microcrystalline quartz (SiO₂) with iron oxides and varied silicate inclusions

Jasper (Multi-color Chert)

Silicon dioxide (SiO2)

Snakeskin Agate

Agate (Cryptocrystalline Quartz, SiO2)

Chert (Jasper)

Silicon Dioxide (SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and silicate minerals

Nephrite Jade / Epidote Pebble

Ca2(Mg,Fe)5Si8O22(OH)2 / Ca2Al2Fe3+(SiO4)(Si2O7)O(OH)

Shiva Lingam

Cryptocrystalline Quartz (Jasper/Chalcedony) with Iron Oxide inclusions

Chert / Jasper / Agate (Chalcedony Group)

Microcrystalline Quartz (SiO2)

Tumbled pale limestone or calcite-rich stone

Limestone, chiefly calcite (CaCO₃); exact identification is uncertain from the photograph

Picture Jasper

Silicon Dioxide (SiO2) with impurities