Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Anthropogenic (Man-made)
Category
Not A Rock (Man Made Polymer)
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Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Granite
Phaneritic plutonic rock (SiO2 typically >69%)
igneous
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Amber
Succinite (fossilized tree resin)
fossil
Amber and Tumbled Stones
Fossilized Tree Resin (Succinite)
fossil
Amber
Succinite (fossilized resin)
mineraloid
Amber with Organic Inclusions
Succinite (fossilized resin)
mineraloid
Chert (Chocolate or Brown Flint)
Chert (SiO2)
sedimentary
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Chert with Limestone
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) Matrix
sedimentary
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)
mineral
Amber
Succinite (a specific common type) or Fossilized Tree Resin (C10H16O)
Mineraloid
Amber
Succinite (fossilized tree resin)
mineraloid / sedimentary organic material
Amber
Succinite (approximate formula C10H16O)
mineral
Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Amber with dark mineral/organic inclusions
Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)
gemstone
Chert / River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
mineral
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Diamond
Carbon (C)
mineral
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Blue Opal Inlay (Simulated/Lab-created)
Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin
mineraloid
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Sedimentary
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Blue chalcedony cabochon (probable)
Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂
gemstone
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
man-made glass
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
man-made glass
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
man-made glass
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
metamorphic (man-made)