Synthetic (Not A Natural Rock)

Hematite

Iron(III) oxide (Fe2O3)

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Banded Agate (with small Geode cavity)

Silicon Dioxide (SiO2) - Chalcedony variety

Granite

Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)

Banded Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartzite

Quartzite (Primary mineral: Quartz, SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Yellow Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Limestone (specifically Dolomitic/Crystalline Limestone)

Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)

Arkosic Sandstone

Arkose (Clastic Sedimentary Rock)

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Gneiss (with Quartzite and Mica)

Gneiss

Moqui Marble (Shaman Stone)

Ironstone Concretion (Fe2O3) - primarily Hematite or Goethite shell with Sandstone core

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Red Quartzite

Quartzite (SiO2 with iron oxide impurities)

Dalmatian Stone

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)

Labradorite (Larvikite variety)

Feldspar (Plagioclase series), (Na,Ca)(Si,Al)4O8

Greywacke (River Slikkenstone)

Greywacke (Impure Sandstone)

Quartzite

Quartzite (SiO2)

Lapis Lazuli

Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Quartzite

Quartzite (primarily SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Anthracite Coal

Anthracite (Carbon-based metamorphic rock)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Quartz (Fieldstone/Pebble)

Silicon Dioxide (SiO2)

Quartz River Pebbles

Silicon Dioxide (SiO2)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Blue Chalcedony Geode (with Quartz Druzy)

Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz

Pink Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Pink Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Quartzite

Quartzite (Mainly SiO2)