Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Category
Not A Rock (Man Made Origin)
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Emerald in Host Rock
Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium
mineral
Granite Pebble
Granite (Plutonic Igneous Rock)
igneous
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
sedimentary
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Moldavite
Moldavite (Siliceous vitreous substance)
tektite (natural glass)
Emerald in Matrix
Beryl (Be3Al2Si6O18)
mineral
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Crushed Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Granite
Granite
igneous
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
gemstone
Ferruginous Sandstone (Gozzan/Ironstone)
Arenite with Limonite/Goethite cement (FeO(OH)·nH2O)
sedimentary
Red Aventurine
SiO2 (Silicon Dioxide with Hematite/Goethite inclusions)
mineral
Basalt
Basalt
Igneous
Pink Granite
Phaneritic intrusive igneous rock (Feldspar-Quartz-Mica)
igneous
Desert Varnish (on Sandstone)
Rock Varnish (composed of Manganese oxides, Iron oxides, and Clay minerals)
sedimentary
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Basalt (River Stone)
Basalt (composed mostly of plagioclase, pyroxene, and olivine)
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Sandstone (likely Quartzite-rich)
Arenite (primarily SiO2)
sedimentary
Polished Stone Pendant (Identity Unclear)
Unknown (Possibly Jasper/Agate/Quartz mixture)
mineral
Hematite Beads
Hematite (Fe2O3)
Mineral
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Shatter Cone
Impactite (Shatter Cone texture)
metamorphic
Weathered quartz-rich rock, possibly quartzite or vein quartz
Quartz-dominant aggregate; chiefly silicon dioxide (SiO₂), possibly quartzite with iron-oxide staining
metamorphic
Sea Glass
Amorphous Silica (Glass) SiO2
Mineraloid (Man-made origin)
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Synthetic (glass)
Vesicular Basalt (Aqueous Tumbled)
Scoriaceous Basalt
igneous
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Emerald crystal in host rock
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
gemstone
Slate
Metamorphic Pelitic Rock
metamorphic
Pearls
Pearl: biomineralized aragonite (CaCO₃) and conchiolin
gemstone
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Quartz Grain
Silicon Dioxide (SiO2)
mineral
Banded Sandstone
Arenite with iron oxide banding
sedimentary
Small quartz-rich pebble
Quartz (SiO₂), possibly quartzite or weathered granite fragment
mineral
Sandstone (Quartzose Pebble)
Arenite (SiO2)
sedimentary
Black Onyx
Chalcedony (Silicon Dioxide, SiO2)
mineral
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral