Igneous, Sedimentary, And Metamorphic

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Citrine Quartz Sphere

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Ruby (set in a gold pendant)

Ruby (Variety of Corundum, Al2O3)

Muscovite Schist with Quartz

Mica Schist (KAl2(AlSi3O10)(OH)2)

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Epidote (with Quartz and Feldspar)

Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)

Unakite

Epidotized Granite

Anyolite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)

Chert (microcrystalline quartz)

Yellow Calcite

Calcium Carbonate (CaCO3)

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Banded Gneiss

Gneiss

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Disulfide (FeS2)

Sodalite

Na8(Al6Si6O24)Cl2

Orange Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Garnet

Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

Epidote

Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))

Milky Quartz (Water-worn pebble/nodule)

Quartz (Silicon Dioxide - SiO2)

Dalmation Stone

Peralkaline Rock (mixed silicate minerals)

Dalmation Stone (often called Dalmatian Jasper)

Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite

Quartz

Silicon Dioxide (SiO2)

Green Kyanite

Kyanite (Al2SiO5)

Dearest Jewelry (Multigemstone)

Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO₂)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Plagioclase Feldspar

NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

Prasiolite (Green Quartz)

Silicon Dioxide (SiO2) with iron impurities

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Smoky Quartz

Silicon Dioxide (SiO2)

Aventurine

Silicon Dioxide (SiO2) with inclusions

Pyrite

Iron Sulfide (FeS2)

Biotite (Mica)

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

Smoky Quartz

Silicon Dioxide (SiO2)

Feldspar

Potassium Feldspar (KAlSi3O8)