Sedimentary Rock (Possibly Composed Of Various Minerals)

Nephrite Jade

Nephrite

Diorite (River Rock/Cobble)

Intermediate Plutonic Igneous Rock (Diorite)

Rose Quartz

SiO2 (Silicon Dioxide)

Metaconglomerate

Metaconglomerate (Quartzite conglomerate)

Diamond (in jewelry setting)

Diamond (C - Carbon)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Sandstone

Arenite

Banded Sandstone

Arenite with Liesegang banding (primarily SiO2 with FeO(OH) impurities)

Sandstone (with Concretion)

Arenite / Quartzose Sandstone

Yellow Quartz (Citrine Quartz or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Coquina (Fossiliferous Limestone)

Coquina (Organic Clastic Limestone)

Sandstone

Arenite (primarily SiO2)

Dragon Blood Jasper

Epidote with Pietersite or Red Jasper (Ca2Al2Fe3+[Si2O7][SiO4]O(OH))

Sandstone or Limestone

Sedimentary Rock

Sandstone Pebble

Arenite (primarily SiO2)

Basalt (Amygdaloidal)

Amygdaloidal Basalt

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

Sandstone (Greywacke/Siltstone variant)

Arenite / Wacke (SiO2 with diverse mineral inclusions)

Quartzite

Quartzite (SiO2)

Mica Schist

Mica Schist (primarily composed of Muscovite, Biotite, and Quartz)

Pink Granite

Phaneritic intrusive igneous rock (K-feldspar rich)

Green Schist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Greenstone / Diorite

Intermediate plutonic igneous rock

Diorite

Diorite (plutonic igneous rock)

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Garnet (likely Almandine or a blend)

Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.

Chert (variant Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Banded Chert

Microcrystalline Quartz (SiO2)

Red Jasper (Mahogany Obsidian variant similarity)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Nodule)

Silicon Dioxide (SiO2)

Sulfur (on Matrix)

Native Sulfur (S8)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Druzy Quartz on Chalcedony Matrix

Silicon Dioxide (SiO2)

Sandstone

Arenite

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Dalmation Stone (often called Dalmatian Jasper)

Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite

Diorite

Diorite (an intrusive igneous rock)

Sandstone

Arenite

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)