Mineraloid (Human Made Geological Specimen)

Gold bullion bars

Native gold (Au), likely cast or refined metal

Chert / Flint

Silicon Dioxide (SiO2)

Chert (Lithic Artifact)

Microcrystalline Quartz (SiO2)

Jade-and-cabochon fruit cocktail ring

Likely nephrite or jadeite (jade) leaves with orange/cream chalcedony or other cabochons; identification from the image is uncertain

Polished black stone, possibly black jasper or obsidian

Uncertain; candidates include microcrystalline quartz (SiO₂; black jasper) or volcanic glass (obsidian, SiO₂)

Chert

Microcrystalline Silicon Dioxide (SiO2)

Dyed Quartz (imitating Emerald/Green Quartz)

Silicon Dioxide (SiO2) with artificial pigment

Multi-stone gemstone ring

Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy

Gemstone-set ring, likely cubic zirconia or diamond

Likely synthetic cubic zirconia (zirconium dioxide, ZrO₂); stones may alternatively be diamond (carbon, C)

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification

Black Chert River Stone

Cryptocrystalline Quartz (SiO2)

Flint (chert), likely a worked stone flake

Microcrystalline quartz (SiO₂); cryptocrystalline variety of quartz

Tektite (Indochinite)

Impact Glass (SiO2 + Al2O3)

Rock crystal (clear quartz), likely rough or lightly polished

Quartz — silicon dioxide (SiO₂)

Chert (Arrowhead/Tool variety)

Microcrystalline Quartz (SiO2)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Tumbled olive-green stone, possibly serpentine or nephrite jade

Undetermined; likely serpentine (Mg₃Si₂O₅(OH)₄) or nephrite, a tremolite–actinolite amphibole aggregate

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Chert

Microcrystalline quartz (SiO2)

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

White marble tile

Calcite-rich marble (CaCO₃)

Tumbled orange-and-white feldspar-rich stone, likely sunstone or orange feldspar

Likely potassium feldspar (orthoclase or microcline), KAlSi₃O₈; exact identification is uncertain from the image

Tumbled Clear Quartz/Rock Crystal

Silicon Dioxide (SiO2)

Rhodonite

Rhodonite, (Mn,Fe,Mg,Ca)SiO₃

Tumbled magnesite

Magnesite (MgCO₃), likely compact or veined magnesite

Drill core, likely weathered granite or granodiorite

Granite–granodiorite core; chiefly quartz, feldspar, and biotite/hornblende

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

Chalcedony / milky quartz flake

Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment

Chert (Flint Nodules)

Cryptocrystalline Quartz (SiO2)

Polished brown stone or bead

Unidentified; possibly polished jasper, agate, or iron-rich quartzite

Gold-colored gemstone ring, likely citrine or glass imitation

Indeterminate from image; possible quartz (SiO₂) or yellow glass set in gold-colored metal

Chert Arrowhead

Chert (Cryptocrystalline variety of Quartz, SiO2)

Chert (flint) fragment

Microcrystalline quartz (SiO₂), commonly called chert; “flint” is a variety of chert

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); visual identification is uncertain because the stone is heavily faceted and photographed with flash

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

Likely tumbled green stone (possibly serpentine or green aventurine)

Indeterminate from image; candidates include serpentine-group minerals or quartz-rich green aventurine

Biological Bone (Patella/Knee)

Patella (part of the Human Skeletal System)

Likely tumbled jasper or iron-stained quartzite

Microcrystalline quartz (SiO₂), possibly quartzite with iron-oxide inclusions

Obsidian

Volcanic Glass