Synthetic (Man Made Glass)

Sandstone Concretion

Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)

Weathered iron-rich concretion or ironstone nodule

Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Brick fragment (Man-made material)

N/A (Fired clay)

Vesicular basalt (probable iron-rich volcanic rock)

Basalt; chiefly plagioclase, clinopyroxene, olivine, and Fe-Ti oxides

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

Diamond

Carbon (C)

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Dyed Agate / Painted Stone

Silicon Dioxide (SiO2) with artificial pigment

Slag Glass (Leland Blue variant)

Anthropogenic Vitreous Silicate

Red faceted gemstone, likely synthetic ruby or red glass imitation

Possibly synthetic corundum (Al₂O₃:Cr³⁺); image alone cannot distinguish it from glass or another imitation

Dalmatian jasper

Porphyritic microcrystalline quartz-rich rock, commonly sold as Dalmatian jasper; spots are chiefly arfvedsonite/amphibole minerals, sometimes altered feldspar

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Red Sandstone or Brick Fragment

Arenite (if sandstone)

Titanium Coated Kyanite (Aura Kyanite)

Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating

Black beaded bracelet, likely black onyx or glass

Possibly chalcedony (microcrystalline quartz, SiO₂); the beads may instead be man-made glass

Cherry Quartz

SiO2 (Silicon Dioxide with iron-rich inclusions/dye)

Slag

Metallurgical by-product

Bismuth

Bismuth (Bi)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Cullet Glass (Strawberry Glass)

Amorphous Silicon Dioxide (SiO2) with metallic dopants

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Crescent Pebble

Weathered Quartzite or Sandstone Fragment

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Boxwork or Septarian Concretion

Septarian nodule / Boxwork weathering

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Sandstone (with concrete/human-made layer)

Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)

Mystic Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Rock Crystal (Clear Quartz)

Silicon dioxide (SiO2)

Slag

Metallurgical Slag