Man Made (Synthetic Rock)

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)

Slag Glass

Vitreous Silicate Residue

Blue Diamond

Carbon with Boron impurities (C)

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Asphalt Concrete

Bituminous Concrete

Titanium Aura Quartz

Titanium bonded Silicon Dioxide (SiO2 + Ti)

Mounted clear gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂), synthetic; exact stone cannot be confirmed from the image

Chert Concretion (with typical hematite/limonite staining)

Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

Polished obsidian

Volcanic glass; predominantly rhyolitic SiO₂

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Dalmatian jasper

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

Goldstone (Brown/Gold variety)

Aventurine Glass (SiO2 with Copper inclusions)

Beads (likely glass or man-made material)

N/A (artificial material)

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Blue Obsidian

Volcanic Glass (Silica, SiO2)

Aura Quartz (specifically Titanium Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Likely blue-green glassy slag or a weathered mineral fragment

Unidentified; the image does not show diagnostic features sufficient for a mineral identification

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Rock crystal (clear quartz), possibly cloudy quartz

Quartz, silicon dioxide (SiO₂)

Asphalt Chunk

Asphalt concrete

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Aluminum Slag

Anthropogenic Aluminum (Al)

Goldstone (Red)

Aventurine Glass (SiO2 + Cu)

Carved opalite pendant

Opalite (man-made opalescent glass; not a natural mineral)

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Purple glassy pebble, possibly slag glass

Unidentified; likely man-made glass rather than a natural mineral

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Rainbow Hematite Ring

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