Sedimentary (Jasper), Mineral (Aquamarine)

Jasper

Jasper (Cryptocrystalline Quartz; SiO2)

Tumbled yellow-brown jasper

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

Tiger Jasper (Polychrome Jasper)

Silicon Dioxide (SiO2) with iron oxide and other mineral inclusions

Red jasper (likely brecciated jasper)

Microcrystalline quartz/chalcedony (SiO₂) colored by iron oxides, with white quartz or calcite veining

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz with iron inclusions

Small brown quartz-rich pebble, possibly chert or jasper

Microcrystalline quartz (SiO₂), tentative

Dalmatian Jasper

Peralkaline Rhyolite (composed of Quartz, Feldspar, and Arfvedsonite)

Polished leopard jasper (likely ocean jasper)

Silicified microcrystalline quartz/chalcedony; mainly SiO₂ with iron-oxide inclusions

Banded Jasper (Chert)

Silicon Dioxide (SiO2) - variety of Chalcedony

Jasper (likely brecciated or silicified jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and organic impurities

Jasper (Red/Brown Variety)

Jasper (Silicon Dioxide, SiO2 plus Iron Oxide impurities)

Polished jasper pebble

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

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite inclusions

Banded Jasper

Silicon Dioxide with Iron Oxide impurities (SiO2)

Brecciated jasper (polychrome jasper)

Silicified breccia composed mainly of microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities

Red jasper pebble (probable)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Red Jasper

Silicon Dioxide with Iron Oxide (SiO2)

Polished ocean jasper (orbicular jasper)

Microcrystalline quartz/chalcedony with iron oxides and accessory minerals; SiO₂-dominant

Polished red jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Polished black stone, possibly black jasper or obsidian

Uncertain; candidates include microcrystalline quartz (SiO₂; black jasper) or volcanic glass (obsidian, SiO₂)

Polished Porcelain Jasper

Jasper (microcrystalline quartz, SiO₂), commonly sold as Porcelain Jasper

Poppy Jasper

Microcrystalline Quartz (SiO2) with mineral inclusions

Jasper or Agate (Chalcedony)

Silicon Dioxide (SiO2) with impurities

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

K2 Jasper (K2 Granite)

Azurite in Granite (Biotite Granite with Azurite inclusions)

Jasper

Silicon dioxide (SiO2)

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Yellow Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

Dalmatian Stone

Peralkaline rhyolite

Brecciated Jasper

Brecciated Jasper (Microcrystalline Quartz / SiO2)

Tumbled jasper

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

Green Jasper (Banded Jasper)

Silicon Dioxide (SiO2) with impurities

Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Green Jasper

Microcrystalline Quartz (SiO2)

Polished purple-gray stone, possibly lepidolite or purple jasper

Lepidolite (K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂) or quartz-rich jasper

Jasper

Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)

Red Jasper

SiO2

Jasper Agate (specifically Brecciated Jasper with Agate inclusions)

Silicon Dioxide (SiO2)