Anthropogenic Material (Man Made Sedimentary Mimic)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)

Asphalt concrete

Anthropogenic conglomerate

Synthetic Marbled Aggregate (Footwear Component)

Ethylene-vinyl acetate (Croslite™)

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)

Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)

Rounded graywacke or sandstone cobble

Lithified clastic sandstone; likely quartz–feldspar–lithic grain aggregate in a silica or calcite matrix

Decorative mosaic cross containing mixed rock and glass fragments

Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Green Sea Glass

Man-made silicate glass (weathered)

Synthetic Faux Fur Fursuit

Polyacrylonitrile / Polyester (Synthetic Textile)

Sea Glass

Man-made vitreous material (silica-based glass)

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Opalite

Synthetic Glass (Amorphized Silicon Dioxide)

Blue Goldstone

Man-made glass with crystalline copper/cobalt inclusions

Faceted Glass (Costume Jewelry)

Amorphous Silicon Dioxide with colorants (Glass)

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Concretion (Sandstone)

Carbonate-cemented Sandstone Concretion

Rainbow Hematite Ring

Iron(III) oxide (Fe2O3) with thin-film coating

Blue Sea Glass

Amorphous Silica (Anthropogenic glass)

Porcelain (Kaolin-based)

Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Red-orange jasper pebble (tentative)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Titanium Coated Kyanite (Aura Kyanite)

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

Polished blue glassy mineral specimen, likely sodalite or blue aventurine

Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Blue opalite glass cabochon (likely imitation opal)

Man-made opalescent glass; not a natural mineral

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Opalite

Man-made glass (traditionally simulated Opal)

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Opalite

Synthetic glass (SiO2 + impurities)

Polymictic conglomerate or breccia (possibly concrete-like aggregate)

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

Diamond

Native Carbon (C)

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Blue glassy gemstone-like specimen

Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass

N/A - Image does not contain a rock or mineral

Anthropogenic textile material