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

Picture jasper

Silicified or cherty sedimentary rock, chiefly microcrystalline quartz (SiO₂) with iron-oxide pigments

Vesicular basalt (weathered lava rock)

Basalt, predominantly plagioclase, clinopyroxene, and iron-magnesium minerals

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Citrine (Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Dyed Agate

SiO2 (Silicon Dioxide)

Dyed or color-enhanced agate/microcrystalline quartz bead

Chalcedony (microcrystalline SiO₂), likely agate

Clear quartz crystal point

Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal

Tumbled turquoise-colored agate or chalcedony

Cryptocrystalline quartz (SiO₂), possibly dyed chalcedony; exact identification requires testing

Heated Citrine (Heat-Treated Amethyst)

Silicon Dioxide (SiO2), quartz variety

Possible weathered metal-rich rock or slag fragment

Uncertain; possibly iron-oxide-rich breccia or industrial slag

Orange glassy slag (industrial by-product)

Iron-rich silicate glass; composition varies, commonly Fe–Ca–Al silicate

Green glassy slag (often sold as “sea glass” or “green obsidian”)

Industrial vitreous slag; primarily amorphous silicate glass, composition variable

Aura Quartz (Cranberry or Magenta Aura Quartz)

Silicon dioxide coated with titanium/niobium (SiO2)

Concrete with Aggregate

Artificial Conglomerate (Cement and Aggregate)

Polished picture jasper slab

Silicified/lithified microcrystalline quartz (chalcedony), commonly with iron-oxide and clay-mineral bands

Vesicular volcanic rock, likely scoria

Scoria (vesicular basaltic to andesitic volcanic rock)

Asphalt Concrete

Bituminous Concrete (Anthropic Rock)

Rainbow aura quartz (treated quartz crystal)

Quartz, SiO₂, with a thin artificial metal-oxide coating

Blue Quartzite (Dyed)

Metamorphosed Quartz-rich Sandstone (SiO2 with organic dye)

Likely weathered basaltic rock or slag-like volcanic specimen

Fine-grained mafic rock, probably basalt; exact identification requires testing

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Blue Slag Glass

Ferro-silicate glass (Slag)

Dalmatian Stone (Dalmation Jasper)

Aplite with Arfvedsonite inclusions

Dyed Agate

SiO2 (Silicon Dioxide)

Polished, carved gemstone (possibly dyed agate or glass-like material)

Unconfirmed from the image; no specific mineral can be identified reliably

Lemon Quartz

Silicon dioxide (SiO2) with iron inclusions

Jasper

Silicon dioxide (SiO2)

Dyed Agate Geode Slice

Silicon Dioxide (SiO2)

Tumbled blue chalcedony (likely blue quartz)

Chalcedony, cryptocrystalline SiO₂; possibly chrysoprase or dyed quartz

Blue Agate (Dyed Chalcedony)

Silicon Dioxide (SiO2)

Dyed blue banded agate (tumbled)

Microcrystalline quartz, SiO₂ (chalcedony variety)

Red jasper (likely iron-oxide-rich jasper)

Microcrystalline quartz (SiO₂) colored by hematite/goethite (Fe₂O₃/FeO(OH))

Iridescent polished/tumbled stone (likely coated quartz or glassy synthetic material)

Indeterminate; possibly quartz (SiO₂) with an artificial iridescent coating

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Amethyst-rich vesicular volcanic rock (probable amethyst basalt/scoria)

Quartz (SiO₂) in vesicular basaltic volcanic rock; precise identification requires testing

Dyed mineral cluster, likely calcite or aragonite

Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced

Tumbled milky chalcedony (likely common opalite-like quartz)

Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O

Polished blue lace agate slice

Chalcedony (microcrystalline quartz), SiO₂, commonly with blue-gray banding and a druzy quartz center

Probable iron-rich mineral or weathered rock fragment

Indeterminate; possibly limonite/goethite-bearing material

Dyed Blue Agate

Chalcedony (Silicon Dioxide / SiO2)