Mineral (Or Mineraloid If Microcrystalline)

Green Jasper

Microcrystalline Quartz (SiO2) with mineral inclusions

Agate (specifically Botswana or Lake Superior style Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Bumblebee Jasper

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

Likely tumbled quartz/chalcedony pebble

Quartz (SiO₂), possibly microcrystalline chalcedony

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

Quartz Geode (Cracked)

Quartz (Silicon Dioxide, SiO2)

Agate (Polished Nodule)

Agate (Silicon Dioxide, SiO2)

Jasper (Banded Jasper / Chert)

Silicon Dioxide (SiO2 with iron oxide inclusions)

Yellow Jasper

Tectosilicates (SiO2) with Goethite/Iron oxide inclusions

Leopard Skin Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Yellow jasper (likely iron-rich chert)

Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides

Tumbled brown jasper

Microcrystalline quartz/chalcedony (SiO₂), iron-oxide colored

Polished brown jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron-oxide and clay inclusions

Red jasper (likely brecciated jasper)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Polished red jasper

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

Polished brown-green jasper

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

Polished yellow jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron oxides and other silicates

Blue Quartz

Quartz (Silicon Dioxide) with blue inclusions (SiO2)

Yellow Quartz (Chalcedony or Agate)

Silicon Dioxide (SiO2)

Jadeite

NaAlSi2O6

Jadeite

Jadeite, NaAlSi2O6

Bumblebee Jasper

Fibrous Calcite with Arsenic and Sulfur Inclusions

Chert / Quartz Pebble

Silicon Dioxide (SiO2)

Jasper

Jasper (Cryptocrystalline Quartz, SiO2)

Quartz Pebble (Chert / Chalcedony)

Silicon Dioxide (SiO2)

Red jasper pebble

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

Tumbled brown jasper

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

Yellow Chalcedony (Quartz Pebble)

Silicon Dioxide (SiO2)

Red jasper (likely polished/chipped fragment)

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

Red Jasper Concretion

Cryptocrystalline Quartz (SiO2)

Red-and-green jasper

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides and possibly chlorite/epidote

Tumbled brown jasper (likely orbicular or brecciated jasper)

Jasper, microcrystalline quartz/chalcedony; SiO₂

Dalmatian jasper (Dalmatian stone)

Feldspar-rich porphyritic igneous rock, commonly sold as Dalmatian jasper; dark spots are mainly amphibole and/or tourmaline minerals

Landscape Jasper

SiO2

Vesicular Basalt with Calcification

Vesicular Basalt (Aphanitic extrusive igneous rock)

Generic Pebble / Rock Fragment

Lithic fragment / Weathered rock pebble

Dinosaur Fossil (Tyrannosaurus rex skull replica/specimen)

Tyrannosaurus rex (fossilized in permineralized sedimentary matrix)

Banded Jasper

Silicate Mineral (Microcrystalline Quartz / SiO2)

Quartz Pebble (Chalcedony/Agate)

Silicon Dioxide (SiO2)

Chalcedony Agate / Carnelian nodules in Matrix

SiO2 (Silicon Dioxide) with iron oxide inclusions

Brown stone, likely a weathered chert or iron-stained rock

Unidentified brown lithic specimen; composition cannot be determined from the image

Milky Quartz Geode / Chalcedony Nodule

Quartz (Silicon Dioxide - SiO2)