Sedimentary (Man Made Composite)

Carved turquoise arrowhead/pendant

Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O

Sandstone

Clastic Sedimentary Rock

Yellow cabochon gemstone, likely citrine or yellow glass imitation

Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Unakite

Epidotized Granite

Sandstone

Arenite

Chert

Chert (Microcrystalline Quartz)

Turquoise cabochon (likely stabilized or imitation)

Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Coquina

Bioclastic Limestone

Coquina

Bioclastic Limestone

Blue chalcedony cabochon (probable)

Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂

Turquoise (likely stabilized or simulated Howlite)

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (ZrO₂) or quartz (SiO₂), but the image may show a man-made simulant

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Conglomerate

Polymictic Conglomerate

Tumbled turquoise-bearing stone (likely turquoise or chrysocolla)

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; possible chrysocolla: hydrated copper silicate

Ruby in Zoisite

Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))

Fossil Sea Urchin (Echinoid)

Echinoidea fossil (often replaced by silica or calcite)

Polished malachite slab

Malachite, Cu₂CO₃(OH)₂; likely polished and possibly resin-stabilized

Chert (Flint/Jasper variety)

Microcrystalline Quartz (SiO2)

Granite

Granite (Phaneritic Quartz-Feldspar-Mica composite)

Polished blue copper mineral, likely chrysocolla or dyed howlite

Chrysocolla: hydrated copper phyllosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; visual identification is uncertain from the image

Blue-green faceted gemstone, likely turquoise or treated turquoise

Turquoise: hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the image

Basalt

Extrusive Igneous Rock

Polished banded agate slab or agate-look decorative stone

Microcrystalline quartz (chalcedony), SiO₂; exact identification is uncertain from the image

Chert (specifically Flint Arrowhead)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Polished agate or chalcedony cabochon

Microcrystalline quartz (SiO₂), likely pale chalcedony/agate

Coquina

Bioclastic Limestone

Exposed aggregate concrete (stone-chip surface)

Portland-cement concrete containing natural aggregate; not a natural rock

Polished malachite

Malachite (Cu₂CO₃(OH)₂), a hydrated copper carbonate hydroxide

Sandstone

Arenite (with iron oxide cement)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Blue-green cabochon pendant, likely turquoise or composite turquoise

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the blurred image

Feldspar-Quartz Rock (likely Pegmatite or Granite)

Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)

Unakite

Unakite Epidosite (composite of Epidote, Orthoclase, and Quartz)

Unakite

Epidotized Granite

Sandstone

Arenite

Polished serpentine-rich stone (likely serpentine jasper or “rainforest jasper”)

Serpentine-group minerals, chiefly antigorite/lizardite, with iron oxides and silica-rich rock matrix

Purple Turquoise (Composite Mojave Turquoise)

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate composite)