Igneous, Sedimentary, And Metamorphic

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Moonstone

Adularia (orthoclase feldspar variety)

Citrine Quartz

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock exposed to metamorphic heat/pressure; Chemical composition is approximately 86%–98% Carbon)

Hematite

Iron (III) Oxide, Fe2O3

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Yellow Quartz (Citrine or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Carnelian (Orange Chalcedony)

Silicon Dioxide (SiO2)

Banded Agate

Chalcedony (Silicon Dioxide, SiO2)

Orbicular Rhyolite (Rainforest Jasper)

Rhyolite containing Spherulites (SiO2 with impurities)

Banded Gneiss

Gneiss (typically quartz, feldspar, mica, amphibole composition)

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Green Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe)

Sunstone and Green Aventurine

Sunstone: (Ca,Na)[(Al,Si)2Si2O8] (Plagioclase Feldspar Group); Green Aventurine: SiO2 (Quartz)

Graphite-veined Quartzite

Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)

Gold Ore in Quartz/Schist

Auriferous Quartz and Sulfide-bearing Schist

Green Aventurine (likely)

Silicon dioxide (SiO2) with fuchsitemica inclusions

Rose Quartz

Rose Quartz (SiO2)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Green Aventurine

Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)

River Pebbles (Sandstone and Quartzite)

SiO2 (Quartz) dominated clastic rocks

Granitic Sand

Detrital sediment (predominantly Quartz, Feldspar, and Mica)

Alexandrite

Chrysoberyl (BeAl2O4 with Chromium impurities)

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Jade

There are two distinct minerals classified as Jade: Jadeite (Na(Al,Fe3+)Si2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the image showing translucent, somewhat fibrous material, it is likely Nephrite.

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Carnelian

Silicon Dioxide (SiO2) - variety of Chalcedony

Banded Agate (with small Geode cavity)

Silicon Dioxide (SiO2) - Chalcedony variety

Smoky Quartz and Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

Banded Chalcedony (Agate)

Chalcedony (SiO2) - Cryptocrystalline Quartz

Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Hematite

Iron (III) Oxide (Fe2O3)

Blue Lace Agate

Silicon Dioxide (SiO₂)

Fluorite

Calcium Fluoride (CaF2)

Quartz Druze on Matrix (Geode Fragment)

Quartz (Silicon Dioxide, SiO2)

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Pyrite

Iron Sulfide (FeS2)

Carnelian

Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Prehnite

Prehnite, Ca2Al2Si3O10(OH)2