Man Made Object (Metalwork)

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Painted River Rock

Artificially Coated Sedimentary Rock

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Opalite

Synthetic Opalised Glass

Dyed Agate

Chalcedony (SiO2)

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Limonite (Iron Ore)

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Magnetic Hematite (Man-made)

Iron Oxide (Fe2O3) with Barium-Strontium Ferrite

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Decorative gemstone-chip jewelry (likely turquoise, coral, and assorted beads)

Predominantly turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; other pieces appear to be dyed coral or red stone, and possibly shell/metal components

Concretion

Sedimentary Concretion (Ironstone / Calcite Concretion)

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Sandstone Concretion

Sedimentary Clastic Rock (Silicate-rich)

Sandstone Concretion

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

Aura Quartz (Titanium/Rainbow Quartz)

SiO2 (Silicon Dioxide) with metallic coating

Libyan Desert Glass

Libyan Desert Glass (SiO2 with trace elements)

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

Red garnet cabochon ring

Garnet-group silicate, likely almandine–pyrope solid solution (X₃Y₂(SiO₄)₃)

Ceramic or Polished Stone Heart (Anthropogenic Material)

Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Opalite

Synthetic Opalized Glass (SiO2 + additives)

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Fossil shark tooth in sediment

Likely fossilized shark tooth, possibly *Carcharhinus* or *Otodus*; exact identification requires the tooth’s full morphology and locality

Vesicular basalt (probable iron-rich volcanic rock)

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

White quartz pebble

Quartz (SiO₂), likely milky quartz

Aura Quartz (Pink/Rose Aura Quartz)

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

Tumbled milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Diamond

Carbon (C)

Milky quartz (likely rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Fossilized sea urchin

Echinoid test, likely a regular sea urchin; calcite (CaCO₃)

Greenstone / serpentinite carving

Serpentinite, chiefly serpentine-group minerals (antigorite, lizardite, or chrysotile); exact identification requires testing

Diamond in Kimberlite

Diamond (C in Kimberlite)

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Dyed Agate / Painted Stone

Silicon Dioxide (SiO2) with artificial pigment

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)