Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
sedimentary
Category
Man Made Byproduct (Often Mistaken For Obsidian Or Emerald)
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Fossil crinoid columnal in limestone
Crinoidea indet.; calcitic ossicle (CaCO₃)
fossil
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Polished serpentine (likely bowenite)
Serpentine-group minerals, chiefly antigorite, Mg₃Si₂O₅(OH)₄; may contain magnetite and carbonate veins
metamorphic
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone (Banded)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)
igneous
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Sandstone (specifically an Iron-Concretion)
Arenite with Iron Oxide (Limonite/Goethite) cementation
sedimentary
Fossilized echinoid (sea urchin), likely a sand dollar fragment or small regular urchin
Echinodermata; commonly Clypeasteroida or Echinoida, preserved mainly as calcite (CaCO₃)
fossil
Zircon
Zircon (ZrSiO4)
Mineral
Fossilized sea urchin
Echinoid test, likely a regular sea urchin; calcite (CaCO₃)
fossil
Golden Sheen Obsidian
Obsidian (volcanic glass) with inclusions of gas bubbles and mineral crystals (e.g., hematite, magnetite) causing the sheen
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Magnetite-rich black sand
Magnetite (Fe₃O₄), likely mixed with other heavy minerals
mineral
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Sedimentary
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
igneous
Quartzite
Quartzite (primarily composed of SiO O₂)
Sedimentary Rock
Ironstone Concretion / Goethite Nodules
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Metallic iron meteorite fragments (probable)
Iron meteorite, chiefly kamacite (α-(Fe,Ni)) with possible taenite
meteorite
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Sedimentary
Likely lateritic ironstone (limonite/goethite-rich)
Goethite, α-FeO(OH), with possible limonite and clay impurities
sedimentary
Ironstone Concretion
Ironstone (primarily Siderite or Limonite)
sedimentary
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
sedimentary
Sandstone Concretion
Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)
sedimentary
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Mineral
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
sedimentary
Multicolored beryl gemstone bracelet
Beryl, Be₃Al₂Si₆O₁₈; likely mixed aquamarine, morganite, heliodor, and green beryl beads
gemstone
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Tumbled obsidian
Volcanic glass; chiefly SiO₂, noncrystalline
igneous
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Quartzite
Quartzite (SiO2 silicon dioxide)
metamorphic
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
BROWN GRANITE (likely 'Tan Brown' or similar)
Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)
igneous
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Granite
Granite (a plutonic rock)
Igneous