Man Made Object (Metal Alloy)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Obsidian

Obsidian (volcanic glass)

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Smoky Quartz

Smoky Quartz (SiO2)

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Blue Slag Glass

Amorphous Silica (Industrial byproduct)

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various additives

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Asphalt Chunk (with aggregate)

Bituminous concrete / Anthropogenic conglomerate

Quartz

Silicon Dioxide (SiO₂)

Slag Glass / Industrial Slag

Anthropogenic Glass

Ferrous Slag (Iron Smelting By-product)

Fused Siliceous Slag

Asphalt Concrete

Bituminous Concrete / Asphaltic Composite

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Sea Glass (Kelly Green)

Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)

Slag Glass (Cullet)

Amorphous Silica / Glass residue

Blue Goldstone

Aventurine Glass

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Synthetic Costume Glove (Paws)

Polyethylene terephthalate (Polyester) & Polyurethane blend

Quartz

Silicon dioxide (SiO₂)

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Glazed Ceramic Tile

Fused Silicate-Clay composite

Molybdenite in Quartz

Molybdenite (MoS2) with Quartz (SiO2)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Weathered copper-bearing sulfide rock (likely bornite/chalcopyrite)

Bornite (Cu5FeS4) and/or chalcopyrite (CuFeS2), with oxidation tarnish

Polished stone sphere, possibly agate or jasper

Likely microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image

Iron Meteorite (Candidate)

Iron Meteorite (Siderite)

Iridescent polished/tumbled stone (likely coated quartz or glassy synthetic material)

Indeterminate; possibly quartz (SiO₂) with an artificial iridescent coating

Basalt

Basalt

Bog Iron / Limonite Concretion

Goethite/Limonite mixture (FeO(OH)·nH2O)

Iron-stained jasper (likely rough jasper)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides

Polished greenstone/serpentine pebble (probable)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile); possible accessory olivine or chlorite

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veins in metamorphic/igneous host rock

Tumbled quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly milky quartz or quartzite

Copper-bearing rock, likely oxidized native copper ore

Native copper (Cu) with copper-oxide/carbonate minerals, possibly chrysocolla, malachite, and cuprite in a limonitic host

Selenite (gypsum)

Gypsum, CaSO₄·2H₂O; likely a fibrous or cleavage fragment

Blue glassy cabochon, likely blue quartz or synthetic glass

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