Sedimentary (Artificial)

Dyed and polished banded agate (likely blue agate)

Microcrystalline quartz, SiO₂ (chalcedony/agate), artificially blue-dyed

Tumbled peacock ore (likely chalcopyrite)

Chalcopyrite, CuFeS₂, commonly artificially oxidized to produce iridescent colors

Polished blue agate geode slice

Banded chalcedony (microcrystalline SiO₂), commonly quartz with blue dye or enhancement

Peacock Ore

Bornite (Cu5FeS4)

Black Onyx

Onyx (Silicon Dioxide, SiO2)

Basalt (likely vesicular basalt)

Basalt; predominantly plagioclase, clinopyroxene, and olivine, with possible volcanic glass

Tiger’s eye

Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos

Amethyst crystal point

Quartz, purple variety — silicon dioxide (SiO₂)

Vesicular basalt (possibly industrial slag)

Basalt, chiefly plagioclase + pyroxene ± olivine; exact identification is uncertain from the image

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Smoky Quartz (Chlorite Inclusions)

Silicon Dioxide (SiO2) with trace Aluminum and Natural Irradiation

Fossil sea urchin (echinoid)

Fossilized echinoid test, likely a regular sea urchin (Class Echinoidea); exact genus and age require locality and examination

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown and oxide-coated

Copper-bearing schist (likely bornite/chalcopyrite ore)

Micaceous schist with sulfide minerals, chiefly bornite (Cu₅FeS₄) and/or chalcopyrite (CuFeS₂)

Dyed or coated quartz geode

Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced

Smoky Quartz

Silicon Dioxide (SiO2)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Black Onyx

Chalcedony (SiO2)

Bismuth

Bismuth (Bi)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Peacock ore

Iridescent chalcopyrite, commonly bornite-coated or artificially treated copper sulfide

Rainbow aura quartz cluster

Quartz, silicon dioxide (SiO₂), artificially coated with a thin metallic film

Agate

Agate (a variety of Chalcedony, SiO2)

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Dyed agate slice

Microcrystalline quartz (SiO₂), commonly chalcedony; blue color appears artificially dyed

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Pink-dyed tumbled stone, possibly quartz or agate

Unconfirmed; likely quartz (SiO₂) or microcrystalline quartz (chalcedony, SiO₂), artificially dyed

Tumbled pink quartz, likely dyed

Quartz (silicon dioxide, SiO₂), probably artificially colored chalcedony or milky quartz

Tumbled purple stone, likely amethyst-bearing quartzite or dyed quartz

Quartz (SiO₂), possibly microcrystalline quartzite; purple color may be from iron-related amethyst or artificial dye

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Smoky Quartz

Quartz (SiO₂)

Peridot (likely, given the color and bead form)

Olivine, variety Peridot (Mg,Fe)2SiO4

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Smoky Quartz

SiO2 (Silicon Dioxide)

Peridot and Citrine Gemstones (in a ring setting)

Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)

Citrine

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Dyed blue howlite or magnesite cabochon

Howlite (Ca₂B₅SiO₉(OH)₅), possibly magnesite (MgCO₃), artificially dyed blue

Peacock ore (iridescent chalcopyrite, possibly bornite)

Chalcopyrite, CuFeS₂; the iridescent surface may be natural tarnish or artificial acid treatment. Similar material is bornite, Cu₅FeS₄.

Smurf Rock (Fictional Interpretation)

Cyanus Anthropomorphicus (Geologic Simulation)

Dyed druzy agate/geode (likely dyed quartz)

Quartz, SiO₂, lining a chalcedony geode; vivid pink color appears artificially dyed