Igneous Or Sedimentary (Anthropogenic Modification)

Hematite

Iron(III) oxide (Fe2O3)

Quartz (Milky or Rough Quartz)

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Red Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Granitic Sand

Detrital sediment (predominantly Quartz, Feldspar, and Mica)

Dalmatian Jasper (or Dalmatian Stone)

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

Quartz (pebble)

Quartz (SiO₂)

Greenstone

Metamorphosed Mafic Igneous Rock

Jasper

Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)

Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)

Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)

Diabase (also known as Dolerite)

Diabase / Dolerite

Blue Lace Agate

Silicon Dioxide (SiO₂)

Pyrite

Iron Disulfide (FeS2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Amphibolite (specifically Hornblende Schist/Gneiss)

Amphibole-rich Metamorphic Rock

Nuummite

Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)

Banded Agate (Jasper-Agate)

Silicon Dioxide (SiO₂)

Pyrite

Iron Sulfide (FeS2)

Granite Gneiss with Garnet

Garnetiferous Gneiss

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Biotite (Black Mica)

Biotite (K(Mg,Fe)3AlSi3O10(OH)2)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz (Milky/Common variant)

Silicon Dioxide (SiO2)

Magnetite (Lodestone variety)

Magnetite (Iron(II,III) oxide, Fe3O4)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Schist (specifically Chlorite/Greenschist)

Chlorite Schist

Epidote with Magnetite/Hematite inclusions

Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Magnetite / Ironstone

Magnetite (Fe3O4)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Carnelian Agate

Chalcedony (SiO2) with iron oxide inclusions

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)

Porphyritic Basalt containing Plagioclase Feldspar phenocrysts

Basalt River Stone

Basalt (Aphanitic Mafic Igneous Rock)