Native American Hammerstone / Pitted Stone
Modified lithic artifact (often quartzite, basalt, or granite)
Category
Browse manufactured stone specimens identified by the Rock Identifier community.
Native American Hammerstone / Pitted Stone
Modified lithic artifact (often quartzite, basalt, or granite)
Concrete or artificial stone core sample
Artificial conglomerate
Quartz
Silicon Dioxide (SiO2)
Opalite
Synthetic Opalised Glass
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable
Note on Image Identification: Textile
N/A (Anthropogenic material)
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Small brown-gray mineral fragment
Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
Carnelian Beads
Silicon Dioxide (Variety of Chalcedony), $SiO_2$
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
Opalite
Synthetic Fluorescent Glass (SiO2 + impurities)
Native Gold
Gold (Au)
Quartzite
Metamorphic Quartzite (SiO2)
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Dark vesicular volcanic rock, likely basaltic scoria
Scoria (vesicular basalt; composition commonly plagioclase, pyroxene, and iron-rich glass)
Opalite
Synthetic glass / Opalized glass
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
Engineer Quartz/Quartzite
SiO2 (Silicon Dioxide with binders)
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Chakra Stone Bracelet (mixed gemstones)
Multi-mineral/Gemstone assembly (primarily Quartz variety beads)
Quartzite
Metamorphic Quartzite (SiO2)
Blue quartzite or blue aventurine glass-like aggregate
Quartzite, predominantly SiO₂ (identification uncertain from image)
Blue Sapphire
Corundum (Al2O3)
Opalite
Man-made Opalized Glass (Synthetic Glass)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Wood Paneling
Engineered Wood / Plywood Paneling
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Heliotrope (Bloodstone) Sphere
Cryptocrystalline Quartz (SiO2 with Iron Oxide inclusions)
White Quartz Star-cut crystal
Silicon Dioxide (SiO2)
Polished black obsidian pyramid/block
Obsidian — natural volcanic glass, chiefly rhyolitic silica (approximately 70–75% SiO₂)
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)