Igneous, Sedimentary, And Metamorphic Mix

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Calcite

Calcium Carbonate (CaCO3)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

Gneiss (Banded Gneiss)

Gneiss

Gneiss

Gneiss

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss (Metamorphosed Pebble)

Gneiss with Quartz/Feldspar banding

Gneiss

High-grade regional metamorphic Gneiss

Gneiss

Gneiss

Gneiss

Gneiss

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Green Aventurine and Clear Quartz

Aventurine (variety of Quartz - SiO2) and Quartz (SiO2)

Chert (specifically Flint or Common Opal/Chalcedony mix)

Microcrystalline Quartz (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (beads)

SiO2 (Silicon Dioxide)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Biotite (Mica)

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

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

Quartz (pebble)

Quartz (SiO₂)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite (on a metal substrate)

Iron Sulfide (FeS2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Amethyst and Hematite Bracelet

Amethyst (SiO2) and Hematite (Fe2O3)