Amethyst gemstone ring
Quartz, purple variety — SiO₂
Category
Browse mineral (man made aura treatment) specimens identified by the Rock Identifier community.
Amethyst gemstone ring
Quartz, purple variety — SiO₂
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
Cullet Glass (Man-made Glass Slag)
Amorphous Silica (SiO2) with chemical additives
Polished obsidian
Volcanic glass; predominantly rhyolitic SiO₂
Aura Quartz Geode
Titanium/Gold bonded Quartz (SiO2 with metallic coating)
Green Aura Quartz
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Green Agate
Silicon dioxide (SiO₂)
Tumbled opalite (likely synthetic glass)
Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species
Tumbled black stone, likely black obsidian
Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Green glass cabochon or tumbled stone
Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
Blue quartz crystal (likely synthetic or coated quartz)
Quartz, silicon dioxide (SiO₂); possible aqua-aura quartz
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
Calcite on Host Rock
Calcium Carbonate (CaCO3)
Dyed Alum or Dyed Quartz (Ornamental Crystal)
Silicon Dioxide (SiO2) or Potassium Alum [KAl(SO4)2·12H2O]
Polished banded agate pebble
Agate, a variety of microcrystalline quartz (SiO₂; chalcedony)
Unidentified tumbled amber-colored mineral
Likely microcrystalline quartz (chalcedony), possibly iron-stained feldspar or calcite
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Tumbled blue-green stone, likely dyed agate
Agate (microcrystalline quartz, SiO₂); blue coloration may be artificial
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Banded agate (polished/tumbled)
Microcrystalline quartz, SiO₂; likely banded chalcedony
Goldstone (blue/black aventurine glass)
Man-made aventurine glass; silica glass containing metallic copper or other glittering inclusions
Small clear crystal, possibly quartz or glass-like gemstone
Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia
Possible weathered basalt or slag fragment
Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image
Polished blue-green glassy slag or coated mineral fragment
Most likely man-made colored glass/slag; exact composition cannot be determined visually
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
Painite
Painite, CaZrAl₉O₁₅(BO₃)
Dyed Agate
Chalcedony (SiO2)
Likely dyed or painted stone
Unidentified natural rock; vivid purple, orange, and pink coloration appears to be a surface coating or pigment, so the underlying rock cannot be reliably identified from the image.
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Tumbled carnelian (likely)
Carnelian, a chalcedony variety of microcrystalline quartz (SiO₂), colored mainly by iron oxides
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Polished carnelian agate
Microcrystalline quartz, SiO₂, commonly chalcedony with iron-oxide coloring