Sulfur (with Matrix)
Native Sulfur (S8)
mineral
Category
Industrial Byproduct
Browse industrial byproduct specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct in the encyclopedia
View all →
Bismuth Crystal
Bismuth (Bi)
mineral
Likely iron-rich rock or weathered metallic mineral fragment
Uncertain; possibly limonite/goethite or iron-bearing slag
mineral
Likely iron-rich slag or weathered ironstone
Hematite–goethite-rich material (Fe₂O₃/FeO(OH)); possibly industrial iron slag
mineral
Tiffany Stone
Fluoritized Opal Beryllium Tuff (composed of Fluorite; CaF2, Opalized SiO2, Bertrandite, Chalcedony, and Quartz)
metamorphic
Arsenopyrite with Schist Matrix
Arsenopyrite (FeAsS)
mineral
Fluorite (Fluor-spar)
Calcium Fluoride (CaF2)
mineral
Fluorite (Purple/Blue variety)
Calcium Fluoride (CaF2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Silver (Sterling Silver Jewelry)
Argentum (Ag) mixed with Copper (Cu)
mineral
Silver (Jewelry form)
Native Silver (Ag)
mineral
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
mineral
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Queen Conch Shell (Biogenic Calcium Carbonate)
Aliger gigas (synonym Strombus gigas); Composition: Aragonite (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Likely metallic meteorite fragment
Undetermined; possibly an iron meteorite or stony-iron meteorite
meteorite
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Man-made byproduct (often mistaken for Obsidian or Emerald)
The user-provided image does not contain a rock or mineral specimen
N/A
N/A (Non-Geological Object)
N/A
Diamond (or Diamond Simulant)
C (Carbon) or synthetic equivalent
gemstone
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
gemstone
Diamond (or Diamond Simulant)
Carbon (C)
gemstone
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Kimberlite
Kimberlite
igneous
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
mineral
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
Industrial Diamond (Bort or Boart)
Diamond (pure Carbon, C)
mineral
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Digital Multimeter (Synthetic Object)
Digital Multimeter (DMM)
not a rock
One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
mineral
Diamond (or diamond simulant)
C
gemstone
Prasiolite (Green Quartz) / Sea Glass Amalgam
SiO2 (Silicon Dioxide)
mineral
Granitic Pegmatite with Schorl
Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
igneous