Mineral, Variety Of Chalcedony (Microcrystalline Quartz)

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Yellow Topaz (Imperial or Precious Topaz)

Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)

Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Beryl (likely Aquamarine or Green Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

Yellow Aventurine

Quartzite with inclusions (SiO2)

Graphic Granite

Graphic Granite (variety of Pegmatite)

River Pebble (Brecciated Chert/Siltstone)

Silicon Dioxide (SiO2) with mineral inclusions

Banded Gneiss

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

Chert (and/or Flint)

Silicon Dioxide (SiO2)

Agate (translucent pebble)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Carnelian

Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Silicon dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions - SiO2)

Yellow Quartzite Pebble

Quartzite (primarily Silicon Dioxide - SiO2)

Blue Quartzite

Quartzite with inclusions (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Red Jasper (Skull Carving)

Jasper (Silicon Dioxide, SiO2 plus Iron Oxide inclusions)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Chert (or Flint)

Chert (a cryptocrystalline variety of quartz, SiO2)

Chert (and Flint)

Silicon Dioxide (SiO2)

Fancy Jasper (Multicolor Agate/Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Quartzite

Quartzite (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Granite

Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)

Conglomerate

Conglomerate (Sedimentary Clastic Rock)

Satin Spar (often marketed as Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Druzy Quartz

Silicon Dioxide (SiO2)

Jasper (specifically Green Jasper/Chert)

Jasper (Silicon Dioxide, SiO2)

Mookaite Jasper

Siliceous (chert) sedimentary rock, a form of Jasper

Aventurine (specifically Green Aventurine)

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

Sandstone (Red/Brown Variety)

Arenite (SiO2 with iron oxide impurities)

Iron-Stained Quartzite

Recrystallized Meta-Quartzite (primarily SiO2)

Rough Quartz (likely Rose or Amethyst variety)

Silicon Dioxide (SiO2)

Chert (Brecciated Chert)

Silicon Dioxide (SiO2)