Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)

Dalmatian Jasper

Peralkaline rhyolite

Asphalt Chunk (with aggregate)

Bituminous concrete / Anthropogenic conglomerate

Quartz (Agate/Chalcedony variety)

Silicon Dioxide (SiO2)

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

Dalmatian Jasper (or Dalmatian Stone)

Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)

Chert / Quartz Pebble

Silicon Dioxide (SiO2)

Lapis Lazuli

(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2 (Complex silicate rock)

Leopard Skin Jasper

Rhyolite (Silicon Dioxide - SiO2 with impurities)

Bauxite

Bauxite (Al2O3·2H2O)

Red Quartzite (Strawberry Quartz)

Quartzite (SiO2 with iron oxide inclusions)

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Polished red jasper

Jasper, a microcrystalline variety of quartz (mostly SiO₂)

Aggregate Concrete

Anthropogenic Conglomerate (Technosol)

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Polished red jasper

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

Red-and-black jasper

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

Bauxite

Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)

Polished brown jasper pebble

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

Polished brecciated jasper

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

Kambaba Jasper

Stromatolite (Fossilized Algae)

Jasper with Quartz (Agate/Jasper mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Slag

Metallurgical Slag

Tumbled yellow jasper

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

Chert

Microcrystalline Quartz (SiO2)

Yellow Quartz (Chalcedony)

Silicon Dioxide (SiO2)

Polished red jasper

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

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Chert (often called Flint or Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Polished jasper pebble

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

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Zebra Jasper

Jasper (variety of Quartz/Chalcedony), SiO2

Bumblebee Jasper

Volcanic Tuff (mixture of Quartz, Sulfur, Hematite, and Orpiment)

Tumbled red jasper (likely dyed)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides; possibly dyed

Chert (likely chalcedony-rich flint)

Microcrystalline quartz, SiO₂ (quartz/chalcedony)

Polished brecciated jasper pendant

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

Banded agate tower (likely onyx/chalcedony)

Microcrystalline quartz, SiO₂; commonly called banded agate or black-and-white onyx

Tumbled red jasper

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

Geode Nodule Fragment

Quartz / Chalcedony Nodule

Polished jasper, likely ocean jasper or brecciated jasper

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and other inclusions

Polished brecciated jasper

Jasper (microcrystalline quartz, SiO₂), likely brecciated and iron-stained

Chalcedony (Common Opal variant or Quartz)

Silicon Dioxide (SiO2)

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

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