Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Chert (Field Stone/Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)

Sandstone

Arenite (primarily composed of SiO2)

Coquina

Bioclastic Limestone (Coquina)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Yellow Quartzite Pebble

Quartzite (primarily SiO2)

Zebra Jasper

Tumbled Opaque Chalcedony (SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Quartzite (Iron-stained)

Quartzite (SiO2 with iron oxides)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Quartzite pebble

Quartzite (SiO2)

Riverstone (Quartzite or Siltstone cobble)

Quartzite (primarily SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

Breccia

Breccia (Clastic Sedimentary Rock)

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Quartz Sand Grain

Silicon Dioxide (SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Hypersthene

(Mg,Fe)SiO3 - Enstatite-Ferrosilite series

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Milky Quartz Mushroom Carving

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (with possible Feldspar inclusions)

Silicon Dioxide (SiO2)

Gold Ore in Quartz

Auriferous Quartz (Gold: Au; Quartz: SiO2)

Quartz (Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Chalcedony with Matrix

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Calcite

Calcite (CaCO3)

Sandstone

Arenite (SiO2 based)

Orange Calcite (likely polished specimen)

Calcite

Quartz

SiO₂ (Silicon Dioxide)

Sandstone (likely Arkosic or Quartzose)

Sandstone (SiO2 with inclusions)

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Pegmatite (likely Granitic Pegmatite)

Pegmatite (a coarse-grained igneous rock, often with granitic composition)

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions

Yellow Quartzite

Silicon Dioxide (SiO2)