Sedimentary Rock Or Mineral (Depending On Origin And Purity)

Chert (Jasper Variant likely)

Silicon Dioxide (SiO2)

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Jade Ring

Nephrite or Jadeite

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Sandstone (Micaceous)

Clastic Sedimentary Rock (primarily SiO2 with Mica)

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Nephrite Jade (Yellow Skin)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Smoky Quartz

Silicon dioxide (SiO2)

Sandstone (Yellow/Tan)

Clastic sedimentary rock (primarily SiO2 with iron oxide staining)

Granite or Pegmatite in host rock

Granitoid / Felsic Intrusive Rock

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Sandstone (Pebble/Conglomerate fragment)

Sandstone (clastic sedimentary rock)

Kambaba Jasper

Rhyolite (Volcanic rock) or Stromatolite (debated)

Chert (Flint) Artifact

Silicon Dioxide (SiO2)

Sandstone

Sandstone (lithified arenite/wacke)

Sandstone with Iron Banding

Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)

Quartz Geode

Silicon Dioxide (SiO2)

Yellow Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2 with minor Fe2O3)

Mixed rock and mineral collection

Unidentified assortment of geological specimens; individual species cannot be determined from the image

Sandstone Pebble

Arenite

Small metallic-looking mineral/rock fragment

Indeterminate from image; possibly galena, hematite, or metallic slag

Dalmatian jasper beads

Commercially “Dalmatian jasper”; commonly spotted, silica-rich rock sold as jasper, though many specimens are feldspar-rich rock rather than true jasper (microcrystalline quartz).

Fossiliferous Limestone containing a Brachiopod or Mollusk Impression

Biogenic Sedimentary Rock / Fossiliferous Limestone

Quartz (on matrix)

Quartz (Silicon Dioxide, SiO₂)

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Coal (Anthracite)

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Likely foliated metamorphic rock (schist or gneiss fragment)

Mica schist–gneiss; chiefly quartz, feldspar, and mica

Emerald

Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities

Graphite Schist

C (Carbonaceous Schist)

Likely serpentinite (serpentine-rich rock)

Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, or chrysotile)

Quartz Vein / Quartzite

Silicon Dioxide (SiO2)

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Brecciated Jasper or Agatized Dinosaur Bone

SiO2

Quartz-veined Metamorphic Rock

Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)

Tektite

Tektite (meteoritic glass)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Granite

Granite (Plutonic Igneous Rock)

Pink Aragonite

CaCO3

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)