Igneous And Metamorphic

Ruby (Corundum)

Aluminium oxide (Al2O3) with Chromium traces

Hematite Nodule

Hematite (Fe2O3)

Red Aventurine

Aventurine Quartz (SiO2 + Hematite/Goethite)

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

Banded Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Green Aventurine in Host Rock

SiO2 (Quartz with Fuchsite inclusions)

Green Aventurine

Aventurine Quartz (SiO2)

Calcite

Calcite (Calcium Carbonate, CaCO3)

Raw Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Jadeite (Jade)

Jadeite, NaAlSi2O6

Yellow Aventurine

Silicon Dioxide (Quartz) with inclusions (SiO2)

Arsenopyrite

Arsenopyrite (FeAsS)

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Specular Hematite (Specularite) in Matrix

Specularite (Fe2O3)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Cobble

Metamorphosed Quartz Sandstone (primarily SiO2)

Green Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Quartzite Pebble

Quartzite (primarily SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica Schist with Iron Staining

Muscovite/Biotite Schist

Quartzite

Quartzite (primarily SiO2)

Marble (Fire and Ice or Pink Veined)

Metamorphosed Limestone (principally CaCO3)

Green Quartzite (or Aventurine)

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

White Marble

Calcite-rich Metasomatized Carbonate (CaCO3)

Quartzite

Quartzite (Primary mineral: Quartz, SiO2)

Quartzite

Quartzite (primarily SiO2)

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

Quartzite Beach Pebble

Quartzite (primarily SiO2)

Epidote with Quartz and Feldspar

Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)

Unakite

Epidotized Granite

Graphite

Graphite (Native Carbon, C)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Quartzite (specifically Pink or Red Quartzite)

Metamorphosed Quartz Sandstone (SiO2)

Garnet-bearing Schist

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

Quartzite

Quartzite (SiO2)

Blue Quartzite

Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2

Green Aventurine (Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)

White Marble

Recrystallized Calcite (CaCO3)

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)