Igneous, Metamorphic, And Sedimentary

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Jasper (Green)

Silicon dioxide (SiO2)

Jasper

Silicon dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Jasper (Red and Yellow)

Silicon Dioxide (SiO2) with iron oxide impurities

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Epidote

Epidote Group (e.g., Clinozoisite, Epidote, Piemontite), Epidote formula: Ca2(Al,Fe)3(SiO4)3(OH)

Quartz (Variety: Agate / Chalcedony)

Silicon Dioxide (SiO2)

Pyrite

Iron Disulfide (FeS2)

Garnet Schist

Garnet-bearing Mica Schist (variety of compositions, often Al2SiO5 with X3Y2(SiO4)3)

Granite Gneiss

Gneiss (High-grade metamorphic rock formed from granitic precursor)

Garnet in Schist

Almandine Garnet in Mica-Schist (Fe3Al2(SiO4)3)

Quartzite

Quartzite (SiO2)

Biotite Schist

Biotite Mica Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

Quartz Geode

Silicon Dioxide (SiO2) within a sedimentary or igneous host

Blue Calcite

Calcium Carbonate (CaCO3)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Turquoise (Dyed Howlite/Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Target mineral) / MgCO3 (Magnesite substrate)

Emerald

Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Galena

Lead Sulfide (PbS)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Yellow Calcite

Calcium Carbonate (CaCO3)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Greenschist / Migmatite

Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)

Quartzite with Sandstone/Iron staining

Metamorphic Quartzite (SiO2)

Fairy Stone (Staurolite Concretion)

Staurolite (Fe2+2Al9Si4O23(OH))

Pyrite

Iron Sulfide (FeS2)

Green Calcite

Calcium Carbonate (CaCO3)

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

Orange Calcite

Calcium Carbonate (CaCO3)

Chalcedony (Tumbled)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Carnelian)

Silicon Dioxide (SiO2)

Blue Chalcedony

Silicon Dioxide (SiO2)