Metamorphic Rock (Composed Of Multiple Minerals)

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Serpentine

Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4

Vesicular Basalt with Amygdules

Amygdaloidal Basalt

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2

Quartzite

Quartzite (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Greenschist / Chloritaform Schist

Chlorite Schist (Group of Silicate Minerals)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Green Calcite

Calcium Carbonate (CaCO3)

Turquoise (Green variety)

Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Aventurine

Quartzite with inclusions (SiO2)

White Marble

Recrystallized Calcite (CaCO3)

Connemara Marble

Ophiocalcite (Serpentinitic Marble)

Blue Spinel on Marble with Phlogopite

MgAl2O4 (Spinel) in CaCO3 (Calcite/Marble) matrix

Geode (unopened)

Chert / Chalcedony Geode (SiO2)

Bumblebee Jasper

Fossiliferous Calcite containing Orpiment and Realgar

Gneiss

Gneiss (High-grade metamorphic rock)

Smoky Quartz (with possible Feldspar inclusions)

Silicon Dioxide (SiO2)

Quartz (Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Amethyst (Chevron or Banded Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Epidosite

Epidosite (Metasomatic rock consisting mainly of Epidote and Quartz)

Lapis Lazuli

Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Ironstone with Pyrite

Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2)

Quartz (Milky or Clear variety)

Silicon Dioxide (SiO2)

Ironstone Concretion (Moqui Marble Type)

Goethite/Hematite-cemented Sandstone Concretion

Quartz in Matrix

Silicon Dioxide (SiO2)

Ferruginous Quartz (Iron-stained Quartz)

Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)

Tiger's Eye

SiO2 (Silicon Dioxide with inclusions of Goethite/Limonite)

Diabase (Greenstone)

Diabase (also known as Dolerite)

Ruby in Kyanite

Corundum (Al2O3) in Kyanite (Al2SiO5)