Mineral (Man Enhanced)

Red Jasper or Chert

Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)

BROWN GRANITE (likely 'Tan Brown' or similar)

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

Moss Agate

Moss Agate (a variety of Chalcedony, SiO ₂)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Banded Jasper (possibly "Picture Jasper")

Jasper (a microcrystalline variety of Quartz / Silicon Dioxide - SiO2)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Erythrite (or Lab-Grown Cobaltite/Cinnabar Analog)

Erythrite (Co3(AsO4)2·8H2O)

Amethyst and Limestone

Amethyst (SiO2 - Silicon Dioxide) and Limestone (CaCO3 - Calcium Carbonate)

Quartz

Quartz (SiO₂)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz

Silicon Dioxide (SiO₂)

Petrified Wood

Silicified wood, primarily composed of Quartz (SiO2)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Chalcedony (or a variety of Chalcedony, likely Agate or Jasper)

Chalcedony (SiO₂)

Calcite

Calcite (Mineral; CaCO₃)

Ruby

Corundum (Al₂O₃) with Chromium (Cr)

Blue Chalcedony and Picture Jasper Beads

Blue Chalcedony (SiO2), Picture Jasper (SiO2)

Diamond

Diamond (carbon allotrope), C (chemical formula)

Serpentinite

Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)

Sandstone (Pebble/Cobble)

Sandstone (arenite is a more precise term for sandstone with less than 15% matrix; this specimen appears to be a lithic or quartz arenite)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Granite

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica)

Iron Meteorite

Iron-nickel alloy (primarily kamacite and taenite)

Ruby in Zoisite

Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende

Porphyritic Basalt or Diabase with Plagioclase Phenocrysts

Porphyritic Basalt or Diabase; Mineral: Plagioclase Feldspar

Sandstone

Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)

Onyx Marble (also commonly called Onyx)

Calcite (CaCO3), often with other mineral impurities

African Turquoise

Teal Jasper (Macro-crystalline Quartz/Sio2 + Inclusions of Copper, Iron, and Manganese)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Granite

Granite (a plutonic rock)

Obsidian

Obsidian (volcanic glass)

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Selenite

Gypsum (CaSO4·2H2O), specifically the crystalline variety Selenite

Coral (Precious Coral)

Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).

Chert / Flint

Chert (varieties include Flint)

Shale (possibly)

Shale (fine-grained clastic sedimentary rock)

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Serpentine

Serpentinite (rock), Serpentine group minerals (e.g., Antigorite, Lizardite, Chrysotile)

Soapstone

Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)