Chert Concretion (with typical hematite/limonite staining)
Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)
sedimentary
Category
Anthropogenic Material (Man Made Sedimentary Mimic)
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Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Metamorphic (modified)
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Slag
Metallurgical Slag
igneous
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Pyrite Concretion (Grapestone)
Iron Sulfide (FeS2) Concretion
sedimentary
Polished gemstone tower assortment
Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones
gemstone
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Polished obsidian
Volcanic glass; predominantly rhyolitic SiO₂
igneous
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Carborundum
Silicon Carbide (SiC)
mineral
Green sea glass (likely)
Man-made glass, likely soda-lime silicate glass; not a natural mineral or rock
mineral
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Quartz crystal (likely clear quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Red-orange cabochon, likely carnelian or glass imitation
Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored
gemstone
Dyed Agate / Painted Stone
Silicon Dioxide (SiO2) with artificial pigment
sedimentary (base), then artificial
Opalite
Man-made Glass (Synthetic Opalized Glass)
mineral
Conglomerate
Conglomerate Rock (Paraconglomerate)
sedimentary
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
sedimentary
Chert / Flint Handaxe
Cryptocrystalline Quartz (SiO2)
sedimentary
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Man-made material (constructed)
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
mineraloid
Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Polished white calcite sphere (identification tentative)
Calcite, CaCO₃
mineral
Agate and millefiori glass jewelry
Agate: microcrystalline quartz (SiO₂); millefiori element appears to be man-made glass
mineral
Blue chalcedony (likely dyed or treated)
Microcrystalline quartz, SiO₂ (chalcedony)
gemstone
Polished black stone, likely obsidian
Obsidian (volcanic glass; mostly silica-rich rhyolitic composition)
igneous
Polished fossilized wood (petrified wood), likely agatized
Silicified wood; predominantly microcrystalline quartz/chalcedony (SiO₂), with iron-oxide coloration
fossil
Green glassy mineral fragment, possibly fluorite
Fluorite (calcium fluoride, CaF₂), tentative identification
mineral
Pink Cubic Zirconia (CZ)
Zirconium Dioxide (ZrO2)
mineral (synthetic)
Cubic Zirconia (Jewelry Setting)
Zirconium Dioxide (ZrO2)
gemstone
Diamond
Native Carbon (C)
mineral
Slag (Industrial)
N/A (Anthropogenic Slag)
industrial by-product