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

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Purple Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO2)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Asphalt (Bituminous pavement fragment)

Artificial conglomerate / Bitumen-Aggregate mixture

Red Tigers Eye (Bull's Eye)

SiO2

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

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

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) treated with metallic vapor

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with artificial dye

Orbicular jasper (likely ocean jasper)

Silica-rich microcrystalline quartz/chalcedony with iron-oxide and other mineral inclusions; commonly classified as orbicular jasper

Blue Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial pigment

Red Tiger's Eye

Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)

Amethyst (Cabochon)

Silicon Dioxide (SiO2) with iron impurities

Rough Quartz (var. Citrine or Yellow Quartz)

Silicon Dioxide (SiO2)

Vesicular basalt (likely weathered lava rock)

Basalt; fine-grained mafic volcanic rock composed chiefly of plagioclase, pyroxene, and commonly olivine

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Beads (likely glass or man-made material)

N/A (artificial material)

Dyed Pink Quartzite

Tumbled and Dyed Quartzite (SiO2 with dye treatment)

Dyed Agate

SiO2 (Silicon Dioxide) - Chalcedony variety

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Sandstone (Nut-stone / Cup-stone artifact)

Quartz Arenite / Worked Sedimentary Rock

Dyed Agate / Quartz (Tumbled)

Silicon Dioxide (SiO2) with artificial dye

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - variety of Chalcedony

Blue Agate (Dyed)

Silicon Dioxide (SiO2)

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

Dyed Agate

Chalcedony (SiO2 with impurities)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Carnelian Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Dyed Pumice

Vesicular Rhyolite (Artificial Coloration Addition)

Slag Glass (Cullet)

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

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')

Silicon Dioxide (SiO2) with artificial pigment

Dyed Chalcedony (Agate)

Silicon Dioxide (SiO2) with artificial pigment

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Red Tiger's Eye

SiO2 (Silicon Dioxide) - Pseudomorph of Quartz after Crocidolite

Likely iron-rich chert or jasper

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

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Porphyritic Basalt (likely artificially dyed or altered)

Basalt with plagioclase phenocrysts (likely treated)

Smoky quartz (likely)

Quartz, silicon dioxide (SiO₂), naturally irradiated variety

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Lemon Quartz (Orizaba/Citrinated Quartz)

Silicon Dioxide (SiO2) with iron impurities/treatment