Tumbled milky quartz
Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Tumbled milky quartz
Quartz — silicon dioxide (SiO₂), cryptocrystalline or microcrystalline variety possible
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2AlSi3O10(OH)2)
Crackled Quartz (Dyed)
Silicon Dioxide (SiO2)
Engineerged Quartz (Quartz Composite)
SiO2 (Silicon Dioxide) in a polymer resin matrix
Porcelain (White Ceramic)
Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
Vesicular basalt (weathered scoria)
Scoriaceous basalt; chiefly plagioclase, clinopyroxene, olivine, and iron-titanium oxides
Red-orange jasper pebble (tentative)
Microcrystalline quartz, SiO₂, colored mainly by iron oxides
Sea Glass
Man-made vitreous material (silica-based glass)
Blue Goldstone
Aventurine Glass
Likely clear quartz crystal or glass-like gemstone
Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image
Metallic sulfide mineral fragment, likely galena
Galena (lead sulfide, PbS), tentative identification
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
Opalite
Synthetic Glass (SiO2 + impurities)
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC) / Moissanite (natural)
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
Opalite
Synthetic Glass / Man-made Opal Simulant
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
Opalite
Synthetic Opalized Glass / Man-made Glass
Opalite
Man-made glass (traditionally simulated Opal)
Opalite glass sphere (likely synthetic imitation)
Man-made opalescent glass; not natural opal
Opalite
Man-made Opalized Glass (Synthetic Glass)
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Colorless quartz crystal (likely quartz fragment)
Quartz, silicon dioxide (SiO₂)
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
Bismuth Crystal
Bismuth (Bi)
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
Aura Quartz (Titanium-coated Quartz)
Silicon Dioxide (SiO2) with metallic vapor coating
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Beads (likely glass or man-made material)
N/A (artificial material)
Fossiliferous limestone with colonial coral
Calcite (CaCO₃) limestone containing fossil tabulate or rugose coral colonies
Tumbled milky quartz
Quartz, silicon dioxide (SiO₂)
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Chert (Arrowhead Preform or Point)
Chert (Microcrystalline Quartz, SiO2)
White quartz pebble or chip
Quartz (silicon dioxide, SiO₂), possibly milky quartz
Tumbled white chalcedony (likely milky quartz)
Chalcedony, microcrystalline quartz (SiO₂)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2