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

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Not a rock, mineral, or geological specimen

Crackle Agate / Dyed Quartz

SiO2 (Silicon Dioxide)

Dyed Howlite (Turquenite)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Dyed Quartz Crystal

Silicon Dioxide (SiO2) with artificial pigment

Green Quartz (likely Aventurine or Prasiolite)

Silicon Dioxide (SiO2) with inclusions

Red Tiger's Eye

SiO2 (Silicon Dioxide with iron inclusions)

Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial dyes

Pink Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Polished black-and-brown river pebble

Likely altered basalt or hornfels; exact identification requires testing

Dyed turquoise-colored howlite or magnesite (likely imitation turquoise)

Howlite: Ca₂B₅SiO₉(OH)₅; magnesite: MgCO₃

Pickled Dragon Eggs (Fictional Interpretation: Purple Agate or Amethyst Geodes)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Likely iron-rich slag or weathered ironstone

Hematite–goethite-rich material (Fe₂O₃/FeO(OH)); possibly industrial iron slag

Green Banded Agate

Cryptocrystalline microcrystalline Quartz (SiO2)

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Tumbled quartz-rich stone, possibly druzy quartz or chalcedony

Quartz/chalcedony (SiO₂); exact identification is uncertain from the photograph

Titanium Quartz (Aura Quartz)

Silicon Dioxide (SiO2) treated with Titanium

Painted River Rock

Artificially Coated Sedimentary Rock

Dyed Pink Agate (or Dyed Quartzite)

Silicon dioxide (SiO2) with artificial pigment

Prasiolite

Silicon Dioxide (SiO2) with iron impurities

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Dyed Blue Agate Slice

Chalcedony (Silicon Dioxide, SiO2)

Vesicular basalt (possibly slag-contaminated)

Basalt; chiefly plagioclase and pyroxene, with possible olivine and secondary minerals

Conglomeratic aggregate / pebble-rich concrete-like rock

Polymictic conglomerate (likely glacial or beach-derived gravel matrix); exact identification uncertain from image

Vesicular basalt

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

Likely weathered limestone or calcareous concretion

Calcite-rich carbonate rock; chiefly calcium carbonate (CaCO₃)

Dyed blue howlite or magnesite (tumbled stone)

Howlite: Ca₂B₅SiO₉(OH)₅; commonly sold dyed blue to imitate turquoise

Asphalt (Bituminous pavement fragment)

Artificial conglomerate / Bitumen-Aggregate mixture

Tumbled orange chalcedony or jasper

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

Tumbled polymetallic mineral specimen, likely chalcopyrite-bearing ore

Probable chalcopyrite (CuFeS₂) with quartz and iron-oxide minerals; exact identification is uncertain from the photograph

Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial colorants

Dyed Blue Agate

Chalcedony (SiO2) with artificial dye

Leopard skin jasper (orbicular jasper)

Microcrystalline quartz (SiO₂), commonly with iron-oxide and other silicate inclusions

Tumbled chert or jasper pebble

Microcrystalline quartz (SiO₂), commonly called chert; opaque varieties are jasper

Dyed blue tumbled stone, likely howlite or magnesite

Howlite (Ca₂B₅SiO₉(OH)₅) or magnesite (MgCO₃), artificially dyed blue

Concrete or asphalt-like aggregate surface with a dark fragment

Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock

Weathered stone, likely sandstone or altered volcanic rock

Indeterminate; possibly quartz-rich sandstone or weathered tuff

Dyed Pink Agate Slice

Silicon Dioxide (SiO2) - Chalcedony variety Agate

Blue Goldstone

Goldstone (artificial glass)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial dye

Dyed Pink Agate Slice

Cryptocrystalline variety of Quartz (SiO2)

Blue Howlite (Dyed)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)