Anthropogenic (Man Made Product Subject To Geological Processes)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Opalite

Synthetic Opalised Glass

Quartzite

Metamorphic Quartzite (SiO2)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Note: Item is not a geological specimen

Polyester mesh and Ethylene-vinyl acetate (EVA) polymer

Weathered iron-rich concretion or ironstone nodule

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

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Bismuth

Bismuth (Bi)

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

Lithified polymictic gravel; clasts may include basalt, granite, quartzite, and other silicates

Angel Aura Quartz (Treated Clear Quartz)

Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum

Small metallic-looking mineral/rock fragment

Indeterminate from image; possibly galena, hematite, or metallic slag

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Titanium Amethyst Geode

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Opalite (likely imitation opal glass)

Man-made opalescent glass; not a natural mineral (often sold as opalite)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (ZrO₂) or quartz (SiO₂), but the image may show a man-made simulant

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Sandstone Concretion

Clastic Sedimentary Rock (primarily SiO2 with mineral cement)

Goldstone (Brown/Gold)

Aventurine Glass (Man-made glass with Copper inclusions)

Sandstone Anvil / Nutting Stone

Quartzose Sandstone (Sedimentary Rock)

Blue glassy cabochon, likely blue quartz or synthetic glass

Possibly dyed blue chalcedony/quartz (SiO₂); visual identification is inconclusive

Polished black pebble, likely basalt

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Goldstone (blue/black aventurine glass)

Man-made aventurine glass; silica glass containing metallic copper or other glittering inclusions

Malachite

Malachite, Cu₂CO₃(OH)₂; a banded botryoidal copper carbonate specimen

Granite with Cupules / Bedrock Mortars

Granite (felsic intrusive plutonic rock)

Green sea glass (likely bottle glass)

Human-processed soda–lime silicate glass; not a natural mineral or rock

Green Agate

Silicon dioxide (SiO₂)

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

Polished brown jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

Pink Cubic Zirconia (CZ)

Zirconium Dioxide (ZrO2)

Milky quartz (likely quartz crystal fragment)

Quartz, silicon dioxide (SiO₂)

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Obsidian (likely black volcanic glass)

Obsidian; primarily amorphous volcanic silica glass, approximately SiO₂-rich rhyolitic composition