Turquoise (Dyed Howlite/Magnesite imitation) rock specimen

Turquoise (Dyed Howlite/Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Target mineral) / Ca2B5SiO9(OH)5 (Actual specimen: Howlite)

mineral

Clear Quartz rock specimen

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Amber and Citrine Quartz rock specimen

Amber and Citrine Quartz

Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)

mineral

Amber (and Citrine Quartz) rock specimen

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Organic Mineraloid and Mineral

Quartzite rock specimen

Quartzite

Quartzite (primarily SiO2)

metamorphic

Quartzite rock specimen

Quartzite

Quartzite (primarily SiO2)

metamorphic

Jasper rock specimen

Jasper

Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)

sedimentary

Pyrite rock specimen

Pyrite

Iron Pyrite (FeS2)

mineral

Dalmatian Stone rock specimen

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

igneous

Malachite rock specimen

Malachite

Copper(II) carbonate hydroxide [Cu2CO3(OH)2]

mineral

Aquamarine rock specimen

Aquamarine

Beryl (Be3Al2Si6O18)

mineral

Quartzite rock specimen

Quartzite

Quartzite (SiO2)

metamorphic

Sandstone (likely Arkose) rock specimen

Sandstone (likely Arkose)

Arenite (composed mainly of SiO2 with Feldspar)

sedimentary

Turquoise rock specimen

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

mineral

Turquoise rock specimen

Turquoise

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

mineral

Sandstone rock specimen

Sandstone

Clastic Sedimentary Rock (composed mostly of quartz, SiO2)

sedimentary

Sandstone (likely Arkosic) rock specimen

Sandstone (likely Arkosic)

Clastic Sedimentary Rock

sedimentary

Sunstone (Feldspar variety) rock specimen

Sunstone (Feldspar variety)

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

mineral

Aquamarine rock specimen

Aquamarine

Beryl (Be3Al2Si6O18)

mineral

Diamond (set in a gold ring) rock specimen

Diamond (set in a gold ring)

Carbon (C) - Adamantine cubic carbon

mineral

Aquamarine rock specimen

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

mineral

Amethyst Geode rock specimen

Amethyst Geode

Silicon Dioxide (SiO2) with iron impurities

mineral

Petrified Wood rock specimen

Petrified Wood

Silicified Wood (SiO2)

metamorphic

Amethyst (Polished Cabochon) rock specimen

Amethyst (Polished Cabochon)

Silicon Dioxide (SiO2) with iron impurities

mineral

Amethyst (Cabochon) rock specimen

Amethyst (Cabochon)

Silicon Dioxide (SiO2) with iron impurities

mineral

Clear Quartz Sphere rock specimen

Clear Quartz Sphere

Quartz (Silicon Dioxide, SiO2)

mineral

Charoite rock specimen

Charoite

K(Ca,Na)2Si4O10(OH,F)·H2O

metamorphic

Quartz with Mica (likely Muscovite) rock specimen

Quartz with Mica (likely Muscovite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride

igneous/metamorphic

Rose Quartz rock specimen

Rose Quartz

Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral

Rose Quartz rock specimen

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral

Sandstone (with potential Arkose/Lithic characteristics) rock specimen

Sandstone (with potential Arkose/Lithic characteristics)

Arenite (Sedimentary rock composed of sand-sized grains)

sedimentary

Amber rock specimen

Amber

Succinite (fossilized tree resin)

mineral

Milky Quartz rock specimen

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Citrine rock specimen

Citrine

Quartz (Silicon Dioxide - SiO2)

mineral

Quartzite (Lithic Artifact) rock specimen

Quartzite (Lithic Artifact)

Quartzite (SiO2)

metamorphic

Rhodonite rock specimen

Rhodonite

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

mineral

Rose Quartz rock specimen

Rose Quartz

Silicon Dioxide (SiO2)

mineral

Rhodonite rock specimen

Rhodonite

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

mineral

Milky Quartz (Vein Quartz) rock specimen

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

mineral

Granite rock specimen

Granite

Granite (Alkali-feldspar granite)

igneous

River Agate (Chert/Chalcedony) rock specimen

River Agate (Chert/Chalcedony)

Cryptocrystalline Quartz (SiO2)

sedimentary

Granite rock specimen

Granite

Phaneritic Felsic Igneous Rock

igneous