This Appears To Be A Man Made Metallic Object, Likely Jewelry, Not A Natural Rock, Mineral, Or Geological Specimen.

Clear Quartz (Carved Dragon)

Quartz (Silicon Dioxide, SiO2)

Obsidian (Black Obsidian)

Obsidian (Volcanic Glass)

Native Gold in Quartz

Native Gold (Au)

Quartz (specifically Milky or Clear Chunk)

Silicon Dioxide (SiO2)

Flower Agate (Cherry Blossom Agate)

Chalcedony (SiO2) with Opaque Inclusions

Moissanite

Silicon Carbide (SiC)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Agate (or Banded Agate)

Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)

Rough Blue Diamond

Carbon (C) - Type IIb Diamond

Malachite

Malachite (Copper Carbonate Hydroxide) - Cu2CO3(OH)2

Clear Quartz (Crystal Quartz)

Silicon Dioxide (SiO2)

Schist

Mica Schist (contains muscovite/biotite and quartz)

Basalt (Greenstone)

Amygdaloidal Basalt / Chloritized Basalt

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

Manganese Oxide Crust on Limestone

Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Carnelian

Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)

Granite

Phaneritic intrusive felsic igneous rock

Brecciated Jasper

Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Amethyst

Amethyst (Silicon Dioxide - SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

Specular Hematite

Iron Oxide (Fe2O3)

Mica Schist with Pyrite

Muscovite/Biotite Schist with Iron Sulfide (FeS2)

Granite

Granite (compositional mixture of Quartz, Feldspar, and Mica)

Clear Quartz

Silicon Dioxide (SiO2)

Citrine Quartz

Citrine (Silicon Dioxide - SiO2)

Agate

Silicon dioxide (SiO2)

Granite

Granite (Phaneritic Acid Igneous Rock)

Unakite

Epidote-Feldspar rock

Red Garnet (likely Almandine or Pyrope)

Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)

Orange Quartz (Citrine Quartz variety)

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

Jasper (likely a variety of Brecciated Jasper or a patterned variety)

Silicon dioxide (SiO2)

Bort or Carbonado

C - Polycrystalline Diamond

River Jasper (Green Jasper)

Silicon Dioxide (SiO2) with impurities