Mineral Based Composite

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Quartz vein material

Quartz (SiO₂), likely milky quartz with iron-oxide staining

Pebble

Lithified clastic rock fragment / Quartz-rich pebble

Green Moss Agate

Silicon Dioxide (SiO2) with Mineral Inclusions

Blue Sapphire

Corundum (Al2O3)

Conglomerate

Conglomerate (clastic sedimentary rock)

Tumbled yellow jasper or chert

Microcrystalline quartz (SiO₂), likely iron-oxide-stained chalcedony/chert

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Moss Agate

Silicon Dioxide (SiO2) with Chlorite/Hornblende inclusions

Conglomerate

Conglomerate (clastic sedimentary rock)

Que Sera Stone (Llanite with Feldspar and Quartz)

Rhyolite with blue quartz and pink orthoclase (Llanite-type quartz porphyry)

Polished/tumbled stone, likely serpentine or agate

Probable serpentine-group mineral (antigorite/lizardite), possibly a green jasper or agate; image is insufficient for certainty

Unakite

Altered Granite (Epidotized Granite)

Blue Kyanite

Kyanite (Al2SiO5)

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Gold Nugget Jewelry

Native Gold (Au)

Malachite cabochon or polished bead

Malachite, Cu₂CO₃(OH)₂

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)

Mixed Silicates and Sulfides (SiO2, FeS2)

Sandstone

Arenite (SiO2 primarily)

Polished turquoise-bearing rock

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a brown host rock or matrix

Blue Quartzite

Quartzite (silicon dioxide, SiO2)

Sandstone

Arenite (mostly Quartz-based)

Turquoise cabochon jewelry

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

Quartz-rich gravel fragment

Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions

Unakite

Altered granite (Epidote, Orthoclase Feldspar, and Quartz)

Agate (Dyed) or composite stone

SiO2

Decorative orb of likely sodalite-bearing rock or dyed stone

Most consistent with sodalite-rich nepheline syenite or a blue-and-white composite; exact identification requires testing

Green Aventurine (or Xiuyan Jade / Serpentine)

Silicon Dioxide (SiO2) with Fuchsite inclusions or Magnesium Silicate

Asphalt Concrete (Bituminous Conglomerate)

Anthropogenic Bituminous Conglomerate

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Schist

Schist (Crystalline Metamorphic Rock)

Blue-green copper mineral specimen, likely chrysocolla-bearing rock

Chrysocolla, hydrated copper silicate: approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; possibly mixed with quartz or turquoise

Pink granite

Coarse-grained felsic intrusive rock, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Red jasper / red chert

Microcrystalline quartz (chalcedony), SiO₂, colored chiefly by iron oxides

Tumbled quartz-rich stone, possibly granite or sandstone

Uncertain from image; likely quartz (SiO₂) with iron-oxide and feldspar impurities

Chert (Cream Variety)

Microcrystalline silica (SiO2)

Sandstone

Arenite (primarily SiO2 with trace Fe2O3)

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with inclusions

Tumbled quartz-rich chalcedony (likely carnelian or orange jasper)

Microcrystalline quartz, SiO₂, colored mainly by iron oxides

Bumblebee Jasper

Calcite with Arsenic and Sulfur inclusions

Quartz Pebble

Silicon Dioxide (SiO2)

Hag Stone

Porous sedimentary rock (typically Flint, Chert, or Sandstone) with naturally occurring holes