Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)

Dalmation Stone (frequently called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock

Tumbled yellow jasper

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

Tumbled brown jasper

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

Dalmatian Stone

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)

Dalmatian Jasper (Dalmatian Stone)

Perthitic feldspar with Arfvedsonite inclusions

Dalmatian Stone (often called Dalmatian Jasper)

Peralkaline Feldsphathic Igneous Rock

Red jasper pebble

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

Tumbled brecciated jasper

Jasper, microcrystalline quartz (SiO₂), commonly with iron oxides and chalcedony

Chert (Jasper/Agate mix)

Microcrystalline Quartz (SiO2)

Red jasper pebble

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

Orange-red jasper pebble

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

Polished jasper

Microcrystalline quartz (SiO₂), likely brecciated or orbicular jasper

Chalcedony (Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Leopard Skin Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dalmation Jasper

Dalmation Stone (perthitic feldspar with arfvedsonite)

Dalmation Jasper (Dalmation Stone)

Perthitic feldspar-quartz-amphibole rock

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with iron and other mineral inclusions

Red jasper pebble

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Dalmation Stone

Peralkaline rhyolite (SiO2 with Arfvedsonite/Riebeckite)

Polished orange-brown jasper pebble

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

Polished orange jasper

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

Tumbled red-brown chert or jasper

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

Kambaba Jasper

Stromatolite / Fossilized Algae (Rhyolitic structure)

Quartz in Basalt (Xenocryst)

Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock

Polished brecciated jasper

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide staining and breccia fragments

Red jasper

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

Leopard Skin Jasper

Jasper (Silicon Dioxide with impurities), SiO2

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

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Polished brown jasper

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

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Leopard Skin Jasper

SiO2 (Microcrystalline Quartz with inclusions)

Asphalt Concrete

Bituminous Concrete (Anthropic Rock)

Bumblebee Jasper

Anhydrous Calcium Carbonate with Sulfur and Arsenic (Orpiment/Realgar)

Conglomerate (River Rock Aggregate)

Conglomerate (Lithic-clast conglomerate)

Tumbled brown jasper

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

Rhyolitic jasper / brecciated jasper

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

Bauxite

Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)

Quartz Geode Pebble

Silicon Dioxide (SiO2)

Polished red-and-cream jasper

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

Polished brown jasper

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