Sedimentary Rock (Technically A Variety Of Chalcedony)

Tumbled jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly chalcedony with iron-oxide impurities

Polished red jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Fossilized wood (petrified wood)

Silicified wood; commonly quartz/chalcedony (SiO₂) replacing wood tissue

Chalcedony (Agate/Quartz variety)

Cryptocrystalline Quartz (SiO2)

Rhyolitic jasper / brecciated jasper

Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities

Iron-rich jasper (likely brecciated jasper)

Jasper, microcrystalline quartz (SiO₂) colored by hematite/goethite and iron oxides

Dalmatian Jasper

Dalmatian Stone (a porphyritic peralkaline igneous rock)

Moss Agate and Druzy Quartz Carving

Cryptocrystalline Silica (SiO2) with impurities

Polished/tumbled iron-rich jasper (likely brecciated jasper)

Jasper, microcrystalline quartz (SiO₂) colored chiefly by iron oxides/hydroxides

Polished red-and-cream jasper

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

Moss Agate

Chalcedony (SiO2) with inclusions of hornblende or chlorite

Polished jasper slab

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

Polished brown jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron-oxide-rich chalcedony

Dalmatian Jasper

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

Tree Agate

Silicon Dioxide (SiO2)

Quartz (Agate/Chalcedony variety)

Silicon Dioxide (SiO2)

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2 + Manganese/Iron oxides)

Jasper Agate (specifically Brecciated Jasper with Agate inclusions)

Silicon Dioxide (SiO2)

Zebra Jasper

Jasper (variety of Quartz/Chalcedony), SiO2

Zebra Jasper

Tektite variety of Silicon Dioxide (SiO2) with inclusions

Jasper (Imperial Jasper style)

Silicon Dioxide (SiO2) with impurities

Polished brown jasper pebble

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

Chert (Jasper/Agate mix)

Microcrystalline Quartz (SiO2)

Chalcedony in Limestone Host Rock

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Fancy Jasper

Silicon Dioxide (SiO2) with iron and organic inclusions

Jasper Geode

Silicon Dioxide (SiO2) with impurities

Polished brecciated jasper

Jasper, microcrystalline quartz (SiO₂), with iron oxides and pale chalcedony/quartz veins

Leopard skin jasper (orbicular jasper)

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

Tumbled yellow jasper

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

Red-orange carnelian

Carnelian, a translucent chalcedony variety of quartz (SiO₂)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Tree Agate (Dendritic Agate/Quartz)

Silicon Dioxide (SiO2) with trace Manganese or Iron oxide inclusions

Blue Lace Agate

Silicon Dioxide (SiO2)

Polished brown jasper pebble

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

Polished brown jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly with iron-oxide impurities

Red jasper pebble

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Zebra Jasper

Impure variety of Silica (SiO2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide with impurities, SiO2)

Tumbled blue jasper or blue-dyed jasper

Microcrystalline quartz (chalcedony), SiO₂; blue coloration may be natural or dye-enhanced

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Red jasper (iron-rich chert), possibly brecciated

Microcrystalline quartz/chalcedony (SiO₂) colored by hematite and goethite