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

Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)

Sedimentary

Calcite

Calcite (CaCO₃)

Mineral

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Mineral

Quartz Geode/Cluster

Quartz (SiO2)

mineral

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Mineral

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Metamorphic, likely Sedimentary with Quartz veins

Orthoclase Feldspar (or K-Feldspar)

Orthoclase (KAlSi3O8)

Mineral

Epidote (or Epidote-rich rock)

Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).

Mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Mineral

Blue Quartz

Quartz (SiO2) with inclusions

Mineral

Quartz

Quartz (SiO₂)

Mineral

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Mixed gemstones (primarily Silicon Dioxide - SiO2)

mineral

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Sedimentary

Garnet (likely Almandine, Pyrope, or a blend)

Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)

Mineral

Hematite

Hematite (Fe2O3)

Mineral

Banded Gneiss (Variety of Gneiss)

Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)

Metamorphic Rock

Agate (various color varieties)

SiO₂ (Silicon Dioxide)

Mineral (specifically a variety of Chalcedony, which is a microcrystalline quartz)

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)

Metamorphic Rock

Pyrite

Iron Pyrite (FeS2)

mineral

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)

Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)

Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)

Quartz

Silicon Dioxide (SiO2)

Mineral

Quartz

Quartz (SiO₂)

Mineral

Calcite

Calcite (Mineral; CaCO₃)

Mineral

Dendritic Agate (or Dendritic Opal)

SiO2 (for Agate), SiO2·nH2O (for Opal)

Mineral

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Rock (likely Sedimentary)

Yellow Chalcedony

Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)

Mineral

Smoky Quartz

SiO2 (Silicon Dioxide)

Mineral

Amethyst

Quartz (SiO2) variety

Mineral

Calcite

Calcite (CaCO 3)

Mineral

Gneiss

Gneiss (pronounced 'nice')

Metamorphic Rock

Calcite

Calcite (Mineral, Calcium Carbonate - CaCO3)

Mineral

Quartz (chalcedony variety) or Limestone with Quartz Veins

SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)

Mineral or Sedimentary Rock (with mineral inclusions)

Quartzite

Quartzite (primarily composed of SiO O₂)

Sedimentary Rock

Milky Quartz

Quartz (SiO₂)

Mineral

Banded Gneiss

Gneiss (pronounced "nice")

Metamorphic Rock

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with various inclusions

sedimentary (geologically classified as a variety of chalcedony/quartz)

Zircon

Zircon (ZrSiO4)

Mineral

Quartz

Quartz (SiO2)

Mineral

Orange Calcite

Calcite (CaCO3)

Mineral

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Mineral

Veined Pebble (likely a Quartz-Veined Pebble)

Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)

Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)

Clear Quartz (beads in a bracelet)

Quartz (SiO2)

Mineral