Mineralological Variety

River Pebbles and Quartz

Mixed Igneous, Sedimentary, and Metamorphic Rocks (Silicon Dioxide SiO2 dominant)

Serpentine

Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4

Tumbled amethyst

Quartz, purple variety; silicon dioxide (SiO₂), colored mainly by iron impurities and irradiation

Tumbled agate or chalcedony

Microcrystalline quartz (SiO₂), likely gray/brown chalcedony with subtle agate banding

Blue-green cut gemstone, possibly aquamarine

Unconfirmed; aquamarine is blue-green beryl, Be₃Al₂Si₆O₁₈

Orange calcite (rough cleavage fragment)

Calcite, CaCO₃

Brown agate (chalcedony)

Microcrystalline quartz, SiO₂; likely iron-stained chalcedony

Polished banded agate (likely petrified wood)

Microcrystalline quartz (SiO₂); possibly silicified wood

Red gemstone ring, likely synthetic ruby or red glass; exact stone cannot be confirmed from the image

Ruby (corundum, Al₂O₃) if natural; the setting appears to be silver-tone metal

Red jasper (likely)

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Tumbled quartz-rich pebble (likely milky quartz or quartzite)

Quartz, SiO₂; possibly quartzite, a metamorphic quartz aggregate

Polished jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Tumbled amethyst

Amethyst, purple quartz (SiO₂)

Fuchsite or Green Mica Schist

Muscovite variant (KAl2(AlSi3O10)(OH)2 with Cr)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Flint)

Chert (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Jasper

Silicon dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

Blue Topaz

Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2

Jasper

SiO2 (Silicon Dioxide)

Tumbled jasper, likely picture jasper or brecciated jasper

Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide pigments

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

Carnelian

Carnelian (Silicon Dioxide, SiO2)

Jasper

Silicon dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Jasper pebble (Yellow/Brown Jasper)

Silicon Dioxide (Microcrystalline Quartz, SiO2 with Iron Oxide impurities)

Chalcedony (Agate / Chert)

Silicon Dioxide (SiO2)

Fuchsite

K(Al,Cr)2(AlSi3)O10(OH)2

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions

Jasper (Green Jasper / Chert)

Silicon Dioxide (SiO2) with iron/clay inclusions

Yellow Jasper

Silicon Dioxide (SiO2)

Jasper Pendant

Silicon dioxide (SiO2) with impurities

Ruby and Diamond Heart Pendant

Corundum (Al2O3) and Diamond (C)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Carnelian Agate

Carnelian (Silicon Dioxide: SiO2)