Mineral, Specifically A Detrital Grain

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Granite (specifically Pink or Alkali Feldspar Granite)

Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)

Quartzite (specifically Pink or Red Quartzite)

Metamorphosed Quartz Sandstone (SiO2)

Sandstone

Arenite (SiO2 with various cementing agents)

Granite (Pink Orthoclase variety)

Phaneritic intrusive igneous rock (Quartz, Orthoclase, Plagioclase, and Mica)

Schist with Biotite Inclusion

Biotite-bearing Mica Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Tumbled Moonstone

Feldspar (Orthoclase/Albite), KAlSi3O8

Picture Jasper

Silicon Dioxide (SiO2) - Opaque Impure Chalcedony

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3/FeO(OH) cement)

Pink Granite

Granite (Phaneritic igneous rock)

Basalt (River Pebble)

Mafic volcanic rock (primarily Plagioclase feldspar and Pyroxene)

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Diorite

Diorite (an intrusive igneous rock)

Jasper (specifically Owyhee or Picture Jasper variety)

Jasper (Silicon Dioxide, SiO2)

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

Sandstone (with potential Arkose/Lithic characteristics)

Arenite (Sedimentary rock composed of sand-sized grains)

Gneiss (specifically Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)

Jasper

Cryptocrystalline Quartz (SiO2)

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Jasper (specifically Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Agate (specifically Chalcedony nodule)

Silicon Dioxide (SiO2)

Granite featuring Quartz Vein

Granite with hydrothermal silica (SiO2) intrusion

Schist (specifically Mica Schist)

Mica Schist

Pink Granite

Phaneritic Plutonic Igneous Rock (composed of K-feldspar, Quartz, and Mica)

Diabase

Diabase (also known as Dolerite)

Sandstone (Ferruginous)

Arenite with Iron Oxide matrix

Pink Granite

Granite (Phaneritic intrusive igneous rock dominated by Quartz and K-Feldspar)

Sandstone (Fossiliferous)

Arenite / Clastic Sedimentary Rock

Basalt

Basalt (Mafic volcanic rock)

Sandstone

Arenite (SiO2 based typically)

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Pink Granite

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

Pink Granite

Granite (Felsic Plutonic Rock)

Granite (Pink/Red)

Phaneritic Igneous Rock (Rich in K-Feldspar)

Quartzite

Quartzite (SiO2)

Sandstone (River Cobble)

Arenite

Green Aventurine

Silicon Dioxide (Quartz variety) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Rose Quartz

SiO2 (Silicon Dioxide)

Halite

Halite (NaCl)

Schist

Schist (various mineral compositions)

Black Onyx

Silicon dioxide (SiO2)

Sandstone (specifically Red Sandstone)

Arenite (primarily Quartz, SiO2)