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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within metamorphic/igneous matrix

Amygdaloidal Basalt with Epidote/Chlorite

Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))

Dendritic Jasper (River Stone)

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Green Rutilated Quartz

Silicon Dioxide with Actinolite inclusions (SiO2 + Ca2(Mg,Fe)5Si8O22(OH)2)

Dalmatian Stone

Dalmatian Jasper (Aplitic Rock)

Yellow Quartzite or Yellow Jasper

Quartzite (primarily SiO2 with Iron oxide staining)

Granite (weathered/river-tumbled)

Granite (Plutonic Igneous Rock)

Blue Quartzite

Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)

Scoria

Vesicular Basalt / Scoriaceous Basalt

Quartz (Druzy/Macro-crystalline)

Silicon Dioxide (SiO2)

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Chert (Arrowhead Debitage or Spall)

Silicon Dioxide (SiO₂)

Peridot

Olivine ((Mg, Fe)2SiO4)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)

Zircon

Zircon (ZrSiO4)

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)

Sodalite

Na8(Al6Si6O24)Cl2

Quartz

Silicon dioxide (SiO2)

Goldstone

Aventurine Glass (Man-made)

Peridot (likely, given the color and bead form)

Olivine, variety Peridot (Mg,Fe)2SiO4

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)

Bismuth

Bismuth (element Bi) with oxidized thin-film interference layer

Chalcopyrite

Chalcopyrite (CuFeS2)

Calcite (Yellow/Orange variety - sometimes called Honey Calcite)

Calcite

Fluorite (Purple/Blue variety)

Calcium Fluoride (CaF2)

Chrysoprase

Silicon dioxide with nickel impurities (SiO2 + Ni)

Smoky Quartz (with possible Garnet inclusions)

Silicon Dioxide (SiO2)

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Amygdaloidal Basalt

Vesicular-Amygdaloidal Basalt (Mafic Extrusive)

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Gneiss

Foliated Metamorphic Rock (Gneiss)

Amethyst (Rough)

Silicon Dioxide with iron impurities (SiO2)

Green Aventurine (Green Quartzite)

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

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

Orange Calcite

Calcium Carbonate (CaCO3)

Hypersthene

Hypersthene (formula: (Mg,Fe)SiO3)

Granite

Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)