Sedimentary (Artificial)

Dyed Agate

Silicon Dioxide (Chalcedony with artificial colorant), SiO2

Rhinestone

Artificial Glass/Crystal

Slag (Industrial Glass)

Artificial Vitreous Silicate

Painted Sandstone

Sandstone (clastic sedimentary rock) with acrylic/artistic coating

Not a rock, mineral, or geological specimen

Painted Rock / Geode Specimen

Silicon Dioxide with artificial pigment coating

Dyed Blue Agate

Silicon Dioxide (SiO2)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Rainbow Hematite / Magnetic Hematite

Iron oxide (Fe2O3) - often synthetic/coated for beads

Banded Agate (Dyed / Polished)

Microcrystalline Quartz (SiO2)

Tumbled chert or flint pebble

Microcrystalline quartz (SiO₂), likely chert/flint

Mixed rock and mineral collection

Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials

Dyed Agate / Painted Stone

Silicon Dioxide (SiO2) with artificial pigment

Asphalt (Bituminous Rock)

Natural bitumen or Bituminous limestone/sandstone

Asphalt concrete

Anthropogenic conglomerate

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Tumbled Quartz

Silicon Dioxide (SiO2)

Conglomerate (possibly breccia)

Polymictic clastic conglomerate; rounded clasts in a dark, likely volcanic-lithic matrix

Weathered limestone or calcareous sandstone

Calcite-rich carbonate rock, predominantly CaCO₃; possibly fossiliferous limestone

Dyed Howlite (Dyed Red)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Likely basalt fragment

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Green Banded Agate

Cryptocrystalline microcrystalline Quartz (SiO2)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial purple dye

Likely native metallic mineral specimen

Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore

Dyed Agate

Agate (Silicon dioxide)

Blue Howlite (Dyed)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Tumbled quartz-rich stone, possibly druzy quartz or chalcedony

Quartz/chalcedony (SiO₂); exact identification is uncertain from the photograph

Dyed turquoise-colored howlite or magnesite (likely imitation turquoise)

Howlite: Ca₂B₅SiO₉(OH)₅; magnesite: MgCO₃

Pickled Dragon Eggs (Fictional Interpretation: Purple Agate or Amethyst Geodes)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Rounded limestone pebble

Micritic limestone, primarily calcite (CaCO₃)

Tumbled brown jasper or chert pebble

Microcrystalline quartz (SiO₂), likely jasper/chert

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Tumbled basalt pebble

Basalt, a fine-grained mafic volcanic rock; commonly plagioclase, pyroxene, and minor olivine or magnetite

Crackle Agate / Dyed Quartz

SiO2 (Silicon Dioxide)

Porphyritic Basalt (likely artificially dyed or altered)

Basalt with plagioclase phenocrysts (likely treated)

Dyed Agate

Chalcedony (SiO2)

Ceramic or Polished Stone Heart (Anthropogenic Material)

Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)

Orange Calcite point

Calcite (Calcium Carbonate, CaCO3)

Dyed Agate

SiO2

Dyed blue howlite or magnesite (tumbled stone)

Howlite: Ca₂B₅SiO₉(OH)₅; commonly sold dyed blue to imitate turquoise

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Fossiliferous limestone

Calcitic limestone, predominantly CaCO₃ (calcite), with possible shell or coral fossils