Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Dyed Agate Geode (Pink/Magenta)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Pink Dyed Agate (Banded Chalcedony)

Silicon dioxide (SiO2) - variety Chalcedony

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Smoky Quartz

Silicon Dioxide (SiO2)

Polished brecciated jasper or iron-rich chert

Silica-rich microcrystalline quartz (SiO₂), with iron-oxide/hydroxide staining; exact identification requires testing

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Clear Quartz Sphere

Crystalline Silicon Dioxide (SiO2)

Pink Tumbled Agate

Silicon Dioxide (SiO2) with dye

Dyed Agate

SiO2 (Silicon Dioxide)

Dyed Agate

Agate (SiO2)

Picture Jasper

SiO2

Metallic Ornament / Jewelry

N/A - This is an artificial object, not a geological specimen.

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Dyed Blue Agate Slice

Silicon Dioxide (SiO2)

Weathered iron-rich rock, possibly laterite or ironstone

Goethite–hematite-rich ferruginous rock; uncertain without testing

Blue Agate Geode (Dyed)

Cryptocrystalline Quartz (SiO2)

Weathered iron-rich sandstone or ferruginous quartzite

Ferruginous sandstone, likely quartz-rich (SiO₂ with iron oxides/hydroxides)

Tumbled chalcedony (likely carnelian or common agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Blue Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Dyed Blue Agate

Silicon Dioxide (SiO2) with artificial cobalt-based dye

Dyed Agate

Silicon Dioxide (SiO2)

Slag (Industrial Byproduct)

Ferro-silicate glass (Slag)

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Agate (Dyed)

Silicon Dioxide (SiO2) with artificial pigment

Slag Glass / Industrial Slag

Anthropogenic Glass

Sandstone with Liesegang Rings

Quartzose Sandstone with Iron Oxide Precipitation

Amethyst geode slices

Amethyst, purple quartz (SiO₂)

Blue Howlite

Dyed Howlite (Ca2B5SiO9(OH)5)

Likely iron meteorite

Iron–nickel meteorite, commonly octahedrite (kamacite–taenite)

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material

Black onyx or black agate bead necklace

Microcrystalline quartz, SiO₂ (likely chalcedony/black agate; possibly dyed)

Dyed and polished agate slice

Agate, a banded microcrystalline variety of chalcedony (SiO₂), commonly quartz with minor impurities

Tumbled yellow calcite

Calcite (CaCO₃), likely honey/yellow calcite

Polished picture jasper heart pendant

Picture jasper (microcrystalline quartz, SiO₂, with iron-oxide and clay inclusions)

Dyed Agate Geode

Silicon Dioxide (SiO2) with artificial pigment

Iridescent coated quartz (likely synthetic/display gemstone)

Quartz, silicon dioxide (SiO₂), likely faceted and surface-coated; exact material cannot be confirmed visually

Red sandstone pebble

Quartz-rich sandstone, commonly ferruginous sandstone (SiO₂-dominated)

Weathered iron-rich chert or jasper

Microcrystalline quartz (SiO₂), variably stained by iron oxides/hydroxides

Botryoidal hematite-rich iron ore (probable)

Hematite, Fe₂O₃, possibly mixed with goethite/limonite

Carnelian Agate

SiO2 (Silicon Dioxide - Chalcedony variant)