Sedimentary Or Metamorphic (Base Substrate)

Sandstone (likely Conglomerate or Gritstone)

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone (Quartzose)

Arenite (SiO2 based)

Glauconitic Sandstone (Greensand)

Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)

Epidote in Quartz

SiO2 with Ca2Al2(Fe3+,Al)(SiO4)3(OH)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone and River Pebbles

Sedimentary Rock (Sandstone / Quartzite / Chert)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Sedimentary Sandstone

Arenite (Sedimentary Rock)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Pearl

Pearl; primarily aragonite (CaCO₃) in nacre

Beryl

Beryllium Aluminum Silicate, Be3Al2(SiO3)6

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Greenschist

Greenschist (Actinolite-Chlorite Schist)

Red Jasper

SiO2 (Silicon Dioxide with Iron inclusions)

Polished malachite

Malachite, Cu₂CO₃(OH)₂

Conglomerate

Clastic Sedimentary Rock

Engineer Quartz/Quartzite

SiO2 (Silicon Dioxide with binders)

Epidote or Unakite Rock

Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)

Sandstone Pebble

Arenite (SiO2 based)

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Sandstone (Quartz Sandstone)

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone Pebble

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone (with biological crust)

Arenite (SiO2 based)

Sandstone (likely Red/Brown Sandstone)

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone (Quartzose)

Arenite (SiO2 based)