Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)

Quartz (Iron-Stained or Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Geode with Quartz/Chalcedony

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Basalt

Basalt (Mafic volcanic rock)

Granite

Phaneritic plutonic rock (Felsic)

Dendritic Quartz

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Blue Chalcedony

Microcrystalline Quartz (SiO2)

Raw Corundum (Sapphire/Ruby variant)

Aluminum oxide (Al2O3)

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

White Quartz

Quartz (SiO2)

Chrysocolla in Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

Obsidian

Obsidian (Volcanic Glass)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Biotite Schist

Biotite Schist (Rich in K(Mg,Fe)3AlSi3O10(OH)2)

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Quartz Geode

Silicon Dioxide (SiO2)

Collection of Minerals and Ores

Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)

Granite

Phaneritic Felsic Igneous Rock

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Basalt (Weathered Pebble)

Extrusive mafic igneous rock; minerals primarily Plagioclase feldspar and Pyroxene

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Bauxite

Bauxite (Al2O3·2H2O)

Green Porphyry (Flowerstone)

Porphyritic Andesite or Basalt

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Snowflake Obsidian

Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions

Sodalite

Na8(Al6Si6O24)Cl2

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Ferruginous Sandstone

Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Rutilated Quartz (likely Citrine or Smoky Quartz with Rutile inclusions)

SiO2 with TiO2 inclusions (Quartz with Rutile)

Grey Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Pumice

Pumice (a highly vesicular volcanic rock)

Rose Quartz

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

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Sandstone (Quartz-rich)

Clastic sedimentary rock (SiO2 primary)