Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineral Based Human Made Alloy
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Sandstone
Arenite (SiO2 based)
sedimentary
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Quartz (Pebble)
Quartz (SiO₂)
Mineral
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Generic Rock Fragment
Rock Fragment
sedimentary
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian (Blue)
Volcanic Glass (SiO2)
igneous
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Jasper/Carnelian Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Bismuth
Bismuth (Bi)
mineral
Native Copper
Copper (Cu)
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous
Chert (Limestone-based)
Silicon dioxide (SiO2)
sedimentary
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
mineral
Aqua Aura Quartz
Silicon Dioxide (SiO2) bonded with Gold (Au)
mineral (treated)
Sulfide Ore (likely Galena and Sphalerite in Quartz)
Lead-Zinc Ore (PbS and ZnS)
mineral
Crackle Agate / Dyed Quartz
SiO2 (Silicon Dioxide)
mineral
Diorite
Intermediate plutonic igneous rock
igneous
Titanium Amethyst Geode
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Moss Agate Geode Sphere
Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions
mineral
Granite (weathered pebble)
Granite (plutonic igneous rock)
Igneous
Graphite
Graphite (Carbon, C)
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Titanium Aura Quartz
Silicon Dioxide (SiO2) coated with Titanium and Niobium
mineral
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Note: No specimen visible
N/A
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Chert (specifically Flint)
Chert (SiO2)
sedimentary
N/A (Non-Geological Object)
N/A
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary