Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Greenstone

Greenschist (primarily composed of chlorite, actinolite, and epidote)

Basalt with Desert Varnish

Mafic Volcanic Rock (Fe/Mg rich Silicate)

Diorite

Diorite (intermediate intrusive igneous rock)

Quartzite

Quartzite (primarily SiO2)

Granite Pebble (Salt and Pepper Granite)

Felsic Intrusive Igneous Rock (Granite)

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO2)

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Basalt with Vesicles

Vesicular Basalt (comprising Plagioclase Feldspar, Pyroxene, and Olivine)

Quartz Pebble

Silicon Dioxide (SiO2)

Bumblebee Jasper

Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)

Wonderstone (Sandstone)

Liesegang Banded Sandstone (SiO2 dominated)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Quartzite

Quartzite (SiO2)

Red Quartzite / Jasper-rich Pebble

Quartzite (primarily SiO2 with hematite inclusions)

Quartzite

Quartzite (primarily SiO2)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Red Quartzite (likely Purple/Red variety)

Quartzite (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite (clastic/metamorphic subtype)

Quartzite (primarily Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

Fossilized Bone Fragment

Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O

Noble Serpentine

Antigorite (Mg3Si2O5(OH)4)

Quartzite River Pebble

Metamorphosed Quartz Sandstone (SiO2)

Black Marble

Recrystallized Limestone (CaCO3)

Quartzite

Quartzite (primarily SiO2)

Quartzite pebble

Quartzite (SiO2)

Orange Quartzite (or Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide impurities (Fe2O3)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Limonite-stained Granite

Felsic Plutonic Rock with Hydrated Iron Oxides

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Pink Quartzite

Quartzite (primarily SiO2 with trace Fe2O3)

Quartzite

Quartzite (primarily SiO2)

Quartzite (Iron-stained)

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Quartzite

Quartzite (primarily SiO2)