Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Slag
Ferrous Slag (Siliceous industrial waste)
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
Strawberry Quartz (or Pink Aventurine)
Quartz with Hematite/Goethite inclusions (SiO2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Diorite (River Pebble)
Intermediate plutonic igneous rock
Chert (or possibly Flint)
Chert (variant: Flint)
Dyed Blue Agate Slice
Silicon Dioxide (SiO2)
Pearls (likely freshwater cultured pearls)
Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin
Quartzite
Metamorphic Quartzite (SiO2)
Tumbled Gabbro
Gabbro (Mafic intrusive igneous rock)
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
Desert Rose (also known as Sand Rose)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions
Dragon Vein Agate (Dyed/Treated)
Agate (SiO2)
Eroded Brick or Pumice-like Scoria
Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)
Quartzite
Quartzite (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe4+ impurities)
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Blue Goldstone
Aventurine Glass
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Slag
Anthropogenic Vitrification Product / Silicate Slag
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
Fossilized Ray Barb (Stinger) Fragment
Myliobatiformes indet. (Fossil stingray spine)
Amethyst (with Pyrite and other minerals)
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Diamond
Natural Diamond (Carbon, C)
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
Diorite (River Pebble)
Intermediate Phaneritic Igneous Rock
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Dolerite (Diabase)
Dolerite / Diabase
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Banded malachite cabochon
Malachite, Cu₂CO₃(OH)₂; the dark bands may be manganese-oxide or other sulfide-rich matrix, and could also indicate a composite or treated specimen
Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate
Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)
Gemstone bead necklace (likely citrine or yellow quartz)
Quartz, SiO₂; precise identification is uncertain because the beads are blurred and metal settings obscure them