Man Made Glass (Not A Natural Rock Or Mineral)

Small dark rock fragment

Uncertain; possibly weathered basalt or slag

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Diamond (in a jewelry setting)

Carbon (C)

Smoky Quartz

Silicon Dioxide (SiO2) with trace aluminum and irradiation

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Sandstone

Clastic Sedimentary Rock

Faceted colorless gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass

Possible basalt or industrial iron-rich slag

Basalt (plagioclase–pyroxene rock); identification uncertain from image

Dyed Blue Agate Slice

Silicon Dioxide (SiO2)

Tumbled chalcedony pendant (likely agate)

Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Banded Chert / Chalcedony

Silicon Dioxide (SiO2)

Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)

Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.

Dyed Quartz Cube

Silicon Dioxide (SiO2)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Faceted brown gemstone pendant, likely smoky quartz or champagne topaz

Probably quartz (SiO₂), smoky variety; alternatively topaz (Al₂SiO₄(F,OH)₂)

Faceted colored gemstones, likely synthetic corundum or glass imitations

Not identifiable from the image; possible synthetic corundum (Al₂O₃)

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Sandstone

Clastic Sedimentary Rock

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Small water-worn pebble, likely granite or granitic rock

Granite (tentative; exact identification is uncertain from the photo)

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)

Tumbled purple chalcedony or low-grade amethyst bead bracelet

Chalcedony (microcrystalline SiO₂), possibly quartz/amethyst; composition is SiO₂

Dyed turquoise-colored lava stone beads

Vesicular basalt (scoria), commonly sold as dyed lava rock

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Tumbled black stone, likely black obsidian

Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Jasper Marble

Silicon Dioxide (SiO2) with Impurities

Turquoise cabochon ring

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Obsidian (volcanic glass)

Obsidian, naturally occurring rhyolitic volcanic glass; composition is silica-rich, commonly about 70–75% SiO₂

Polished black obsidian

Volcanic glass; primarily rhyolitic SiO₂, with minor iron, magnesium, and other trace elements

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Dark, weathered stone—possibly basalt or slag

Indeterminate; likely fine-grained basalt (plagioclase–pyroxene)

Diamond in Kimberlite

Diamond (C in Kimberlite)

Diamond (as set in a gold ring)

Carbon (C)

Green obsidian (likely moldavite)

Natural volcanic glass; if extraterrestrial-impact glass, moldavite (tektite)

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Ceramic or Polished Stone Heart (Anthropogenic Material)

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