Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)

Chert / Flint (a variety of Chert)

Chert (SiO2)

Red jasper

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

Polished brecciated jasper

Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), with iron-oxide staining

Red jasper (likely polished/tumbled)

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Polished red jasper

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

Tumbled jasper

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

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Red jasper

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

Red jasper

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

Tumbled red jasper

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

Polished red jasper

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

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite

Tumbled yellow-orange jasper

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

Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Polished jasper slab

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

Kambaba Jasper (Crocodile Jasper)

Stromatolitic Rhyolite/Jasper (SiO2)

Dalmatian Jasper

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

Tumbled yellow jasper (probable)

Jasper, an opaque microcrystalline variety of quartz; chiefly SiO₂ with iron-oxide inclusions

Leopard Skin Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Polished banded jasper pebble

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and clay/mineral impurities

Dalmation Jasper (or Dalmation Stone)

Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)

Dalmatian jasper

Quartz-bearing alkali feldspar syenite/porphyritic igneous rock, commonly marketed as Dalmatian jasper

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Iron-rich jasper (likely brecciated jasper)

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

Polished red jasper pebble

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

Chalcedony in Limestone Host Rock

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Red jasper

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

Polished brown jasper (likely picture jasper)

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

Tumbled brecciated jasper

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide-rich matrix or veining

Chalcedony Nodule (Commonly known as Agate or Chert)

Microcrystalline Quartz (SiO2)

Dalmatian Jasper

Peralkaline Feldspar Rhyolite

Dalmatian Jasper

Dalmatian Stone (Aplite with Arfvedsonite)

Polished yellow-brown jasper

Jasper, a microcrystalline variety of quartz (SiO₂), commonly containing iron-oxide impurities

Kambaba Jasper (Crocodile Jasper)

Rhyolite containing Fossilized Cyanobacteria (Stromatolite)

Polished red jasper pebble

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

Chalcedony (Botryoidal/Agate nodule)

Microcrystalline Quartz (SiO2)

Dalmatian Jasper

Peralkaline rhyolite with arfvedsonite inclusions

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Polished brown jasper pebble

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

Red jasper (likely polished/tumbled)

Jasper, an opaque microcrystalline variety of quartz; mainly SiO₂ with iron-oxide inclusions

Polished jasper carving or slab

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron-oxide-rich brecciated or orbicular jasper

Chalcedony (Botryoidal Agate vein)

Chalcedony (Microcrystalline Quartz) - SiO2