Not A Rock (Synthetic Material)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Rose Quartz

Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese

Carnelian (a variety of Chalcedony)

SiO2 (Silicon Dioxide) with Iron Oxide impurities

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Quartzite

Metamorphosed Quartz Sandstone (primarily SiO2)

Quartzite

Quartzite (SiO2)

Conglomerate

Conglomerate (Rock composed predominantly of rounded clasts > 2mm)

Amethyst (Quartz Cluster)

Silicon Dioxide (SiO2) with iron impurities

Quartzite

Quartzite (primarily SiO2)

Orange Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Red Jasper (Heliotrope family variant)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Granite

Granite (Felsic intrusive igneous rock)

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Dendritic Limestone

Calcite with Manganese Oxide (Manganese Dendrites)

Banded Sandstone

Arenite with Liesegang banding (primarily SiO2 with FeO(OH) impurities)

Yellow Jasper

Silicon Dioxide with Iron inclusions (SiO2)

White Agate (Tumbled)

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Fluorite (Purple variety)

Calcium Fluoride (CaF2)

Olivine (Peridotite)

Olivine Group; (Mg, Fe)2SiO4

Quartz (Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Mica (likely Muscovite)

Muscovite / KAl2(AlSi3O10)(OH)2

Carnelian

Silicon Dioxide (SiO2) - variety of Chalcedony

Unakite (bottom) and Sodalite (top)

Epidotized Granite (Unakite) and Sodium Aluminum Silicate Chloride (Sodalite)

Yellow Jasper

Chalcedony (Silicon Dioxide with iron inclusions), SiO2

Turquoise (likely Stabilized or Dyed Howlite/Magnesite)

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with inclusions of Chlorite, Manganese, or Iron

Greenstone (Metabaltic/Greenschist)

Chlorite schist / Meta-basalt

Sandstone (Quartzose Pebble)

Clastic sedimentary rock (primarily SiO2)

Shale with Iron Oxide Staining

Fissile Mudstone (primarily clay minerals and quartz)

Dyed Blue Agate

Silicon Dioxide (SiO2)

Granite Pebble

Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

Gneiss (Metamorphic Cobble)

Gneiss (High-grade Regional Metamorphic Rock)

Pyrite

Iron Disulfide (FeS2)

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Smoky Quartz

Smoky Quartz (SiO2 - Silicon Dioxide with trace impurities of aluminum)

Sandstone (River Pebble)

Arenite (SiO2 based)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)