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

Tumbled smoky quartz

Quartz, silicon dioxide (SiO₂), smoky variety colored by irradiation-related defects

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Smoky Quartz

Silicon Dioxide (SiO2)

Tektite (Indochinite)

Tektite (High-silica natural glass)

Bornite (“peacock ore”), likely weathered copper sulfide

Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish

Banded Ironstone / Jasper Siltstone

Siltstone with Iron Oxide Hydrates (SiO2 with Fe2O3/FeO(OH))

Jasper and Agate Beads (Mahogany Obsidian, Dyed Agate, Turquoise/African Turquoise)

Silicon Dioxide (SiO2) mixture with inclusions / Hydrated Copper Aluminum Phosphate

Tumbled black stone, likely black tourmaline

Schorl tourmaline, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Weathered basaltic rock (probable vesicular basalt)

Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine, with iron-oxide alteration

Red Jasper (in Quartz/Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled jasper or chert

Microcrystalline quartz (SiO₂), likely iron-stained jasper/chalcedony

Peacock ore (bornite/chalcopyrite), likely treated

Bornite, Cu₅FeS₄, and/or chalcopyrite, CuFeS₂

Polished brown jasper (likely ocean or brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Green Glass Slag

Amorphous Silicon Dioxide (SiO2) with metal oxide impurities

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Tumbled amber-colored chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Dyed Agate

Agate (Cryptocrystalline Quartz), SiO2

Polished jasper slab

Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), colored mainly by iron oxides

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Chalcedony mix)

Polished/tumbled yellow-brown chert (likely jasper)

Microcrystalline quartz (chalcedony), SiO₂, iron-oxide colored

Tumbled jasper

Microcrystalline quartz (SiO₂), commonly iron-rich jasper

Tumbled Black Stone

Unknown (possibly basalt, obsidian, or black jasper)

Polished jasper pebble

Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide impurities

Tumbled orange chalcedony / jasper

Microcrystalline quartz, SiO₂, likely iron-stained chalcedony or quartz-rich jasper

Tumbled dark stone, likely basalt

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

Tumbled smoky quartz with iron-stained inclusions

Quartz (SiO₂), likely smoky quartz variety

Blue Dyed Agate

Cryptocrystalline Quartz (SiO2)

Likely polished/tumbled garnet

Garnet-group silicate, likely almandine–pyrope solid solution; approximate formula Fe₃Al₂(SiO₄)₃–Mg₃Al₂(SiO₄)₃

Bismuth

Bismuth (Bi)

Red Agate

Silicon dioxide (SiO2)

Dyed agate (likely dyed chalcedony)

Microcrystalline quartz, SiO₂ (chalcedony/agate)

Smoky Quartz

Silicon Dioxide (SiO2)

Red Jasper (Siltstone or Chert-based Jasper)

Silicon dioxide with hematite (SiO2 + Fe2O3)

Citrine

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Dyed blue chalcedony (likely dyed quartz pebble)

Chalcedony, microcrystalline quartz (SiO₂), artificially colored

Yellow-brown chert or jasper pebble

Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper

Tumbled fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Likely smoky quartz pendant

Smoky quartz, silicon dioxide (SiO₂), quartz variety colored by irradiation-related defects

Crackle Quartz (Dyed)

SiO2 (Silicon Dioxide) - Treated

Black-and-white jasper

Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions

Tumbled dark stone, likely banded iron formation or hematite-rich jasper

Hematite-bearing quartz/jasper; probable iron oxide–silica aggregate

Vesicular basalt pebble

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine