Not A Rock Or Mineral (Anthropogenic Material)

River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)

Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Jasper Agate (specifically Brecciated Jasper with Agate inclusions)

Silicon Dioxide (SiO2)

Milky Quartz in Conglomerate Matrix

Silicon Dioxide (SiO2) within Clastic Sedimentary Rock

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood)

Silicified Wood / Silicon Dioxide (SiO2)

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Sandstone (with Iron Staining)

Clastic sedimentary rock (High Silica / Iron Oxide)

Quartz Pebble (with Iron Inclusions)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Chert (specifically Tan/Gray Chert)

Microcrystalline quartz (SiO2)

Diorite (Dalmatian Stone)

Phaneritic Plutonic Diorite

Granite (Weathered)

Course-grained Intrusive Igneous Rock

Coral Fossil (Petrified Coral)

Scleractinia (Order) - Calcified Fossil Skeleton (CaCO3)

Unakite

Epidote-Feldspar rock

Quartz Vein in Metamorphic Rock

Silicon Dioxide (SiO2) within Metasedimentary host

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

Chert (Yellow Jasper/Quartzite Pebble)

Microcrystalline Silicon Dioxide (SiO2)

Diorite

Intermediate plutonic igneous rock

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Limestone

Calcareous sedimentary rock (CaCO3)

Granite

Phaneritic plutonic rock (Quartz + Feldspar + Mica)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Diorite (Salt and Pepper Rock)

Phaneritic Plutonic Diorite (Plagioclase Feldspar + Amphibole/Biotite)

Basalt with vesicles

Vesicular Basalt

Limestone (Weathered Aggregate)

Sedimentary Carbonate Rock (CaCO3)

Petrified Wood

Silicified Wood (primarily SiO2)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Coquina

Bioclastic Limestone

Fulonite (Fulgurite-like)

Fulgurite (SiO2 fused silica/lechatelierite)

Petrified Wood

Silicified Wood (primarily SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomerate (clastic sedimentary rock)

Schist with Quartz/Mica

Mica Schist (primarily Muscovite and Quartz)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Turquoise and Red Coral

Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)

Chert (Holey Stone)

Microcrystalline Quartz (SiO2)

Basalt (Vesicular)

Mafic Volcanic Rock (rich in Magnesium and Iron)

Mookaite Jasper

Silicified Radiolarite (SiO2)

Scoria (Basaltic)

Vesicular Basalt