Mineral (Man Made Glass)

Faceted clear gemstone ring, likely quartz or glass imitation

Unidentified colorless faceted material; quartz (SiO₂) is possible, but the image cannot distinguish it from glass or another gem

Milky quartz

Quartz (silicon dioxide, SiO₂)

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

Red cabochon gemstone ring (likely glass or synthetic stone)

Undetermined; the image does not establish a natural mineral identity

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Terracotta (Man-made ceramic brick fragment)

Baked clay / High-iron ceramic (Silicate-based ceramic)

Blue chalcedony cabochon (probable)

Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

White drusy quartz

Quartz, silicon dioxide (SiO₂), with a drusy coating of tiny crystals

Milky quartz (rough fragment)

Quartz, silicon dioxide (SiO₂)

Orange tumbled feldspar, likely sunstone

Probably potassium feldspar (orthoclase or microcline); identification is uncertain from the image

Beaded gemstone bracelet

Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components

Tumbled green glassy mineral, possibly aventurine or fluorite

Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)

Gem-set gold ring

Gold alloy setting with a colorless faceted gemstone, possibly quartz or glass; the stone cannot be identified reliably from the image

Likely beach-worn glass and a pebble

The brown piece appears to be weathered glass (amorphous SiO₂-rich material); the pale piece is likely a small quartz-rich stone, possibly milky quartz.

Goldstone and pink quartz bead strands

Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Clear crystal-bead bracelet, possibly quartz

Unidentified transparent mineral beads; quartz (SiO₂) is one possibility

Black-and-white agate geode pendant

Agate (microcrystalline quartz, SiO₂), likely a hollow geode slice with chalcedony and drusy quartz

Milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Green Aventurine

Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Likely milky quartz fragment

Quartz (SiO₂)

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

Polished amethyst-bearing quartz

Quartz, SiO₂; purple coloration from irradiation and trace iron

Native Silver

Silver (elemental Ag)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Rough Sapphire (Corundum)

Corundum (Al2O3)

Tumbled blue chalcedony (possibly blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Sandstone

Clastic Sedimentary Rock

Chert

Microcrystalline Quartz (SiO2)

Granodiorite

Granodiorite

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Diamond (in a gold ring)

Diamond (pure carbon, C)

Pearl

Biogenic CaCO3 (Aragonite and Calcite)