Mineral (Man Made Aura Treatment)

Tumbled blue stone, likely blue aventurine or dyed quartz

Quartz (SiO₂), possibly with fuchsite inclusions; exact identification requires testing

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Tumbled orange-and-white chalcedony

Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian/white agate variety

Blue Onyx (Dyed Agate)

Cryptocrystalline Quartz (SiO2) with artificial pigment

Fossilized coral fragment

Fossil coral, commonly colonial scleractinian coral (order Scleractinia); exact genus indeterminate

Orange calcite crystal

Calcite (calcium carbonate, CaCO₃)

Orange calcite

Calcite (CaCO₃), likely honey/orange calcite

Polished/tumbled calcite

Calcite (calcium carbonate, CaCO₃)

Likely aquamarine-bearing beryl fragment

Beryl, Be3Al2Si6O18; blue color from iron impurities

Amethyst tumbled stones

Quartz, SiO₂; purple coloration from irradiation and trace iron

Tumbled gray-blue agate/chalcedony

Microcrystalline quartz (SiO₂), likely banded chalcedony or agate

Polished pink-and-gray agate/chalcedony pebble

Microcrystalline quartz (SiO₂), likely agate with iron-oxide coloration

Tumbled blue sodalite (probable)

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Dyed Pink Quartzite

Tumbled and Dyed Quartzite (SiO2 with dye treatment)

Rough Sapphire (Corundum)

Corundum (Al2O3)

Amethyst crystal

Quartz (SiO₂), purple variety; trigonal crystal system

Faceted red ruby

Corundum (Al₂O₃), colored red by chromium

Weathered sandstone or limestone fragment

Likely quartz-rich sandstone or micritic limestone; exact identification requires testing

Likely garnet gemstone

Garnet-group silicate; species cannot be determined from the photo (common red varieties include almandine, Fe₃Al₂(SiO₄)₃, and pyrope, Mg₃Al₂(SiO₄)₃).

Weathered limestone

Calcite-rich limestone (primarily CaCO₃)

Diamond

Native Carbon (C)

Tumbled carnelian

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Limestone with Chert Nodules

Sedimentary Calcium Carbonate (CaCO3) with Microcrystalline Silica (SiO2) inclusions

Onyx Agate (Brazilian Agate)

Silicon Dioxide (SiO2)

Red Tiger's Eye

SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite

Tumbled blue chalcedony or dyed quartz

Microcrystalline quartz, SiO₂ (likely dyed chalcedony)

Calcite (likely chalky calcite fragment)

Calcite, calcium carbonate (CaCO₃)

Amethyst cluster

Quartz, SiO₂; purple coloration from trace iron and natural irradiation

Honey calcite crystal

Calcite, calcium carbonate (CaCO₃)

Tumbled yellow calcite

Calcite (calcium carbonate, CaCO₃)

Orange calcite (likely honey calcite)

Calcite, calcium carbonate (CaCO₃)

Milky calcite

Calcite (calcium carbonate, CaCO₃)

Calcite

Calcium Carbonate (CaCO3)

Likely calcite fragment

Calcite (calcium carbonate, CaCO₃)

Orange calcite (likely)

Calcite, calcium carbonate (CaCO₃)

Honey calcite (likely calcitic limestone or marble)

Calcite — CaCO₃; possibly calcite-rich limestone/marble

Banded calcite/aragonite mineral specimen (tentative)

Calcite (CaCO₃), possibly with aragonite or crystalline carbonate growth

Calcite (Optical Calcite / Iceland Spar)

Calcium Carbonate (CaCO3)

Honey Calcite

Calcium Carbonate (CaCO3)

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)

Anhydrite (Calcium Sulfate, CaSO4)

Blue-green fluorite (likely tumbled/polished)

Fluorite, calcium fluoride (CaF₂)

Blue Sapphire (faceted in jewelry)

Corundum (Al2O3)