Petrified Wood
Silicified Wood (SiO2)
Category
Browse man made object (ring) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (SiO2)
Dearest Jewelry (Multigemstone)
Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)
Red cabochon gemstone, likely carnelian or dyed chalcedony
Chalcedony (microcrystalline quartz), SiO₂; exact identification requires testing
Onyx
Chalcedony (SiO2) with parallel banding
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2 (Calcium magnesium iron silicate hydroxide)
Opal
Hydrated Silica (SiO2·nH2O)
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO₂)
Wishing Stone (Quartz-veined Sedimentary Pebble)
Silicified sedimentary rock with quartz vein (SiO2)
Granite
Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).
Petrified wood
Silicified fossil wood; commonly quartz (SiO₂) replacing wood
Diamond (in Jewelry Setting)
Carbon (C)
Unknown Organic Object (likely a berry or fruit)
Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.
Slate
Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)
Petrified Wood
Silicified Wood (SiO2)
Petrified Wood
Silicified Wood (primarily SiO₂ - Silicon Dioxide)
Amethyst cluster
Amethyst, purple quartz (SiO₂)
Polished amethyst pyramid
Amethyst, purple quartz (SiO₂)
Diamond jewelry
Diamond (crystalline carbon, C)
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Weathered Sedimentary Rock with Liesegang Rings
Sandstone or Siltstone with Iron Oxide Banding
Asphalt Pavement (with aggregate)
Asphalt concrete
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Cardstock (Paper)
Cellulose (C6H10O5)n
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
Yellow Sapphire (Raw)
Corundum (Al2O3)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Diamond (set in Gold)
Diamond (pure carbon, C)
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Lapis Lazuli (in jewelry setting)
Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite-rich rock)
Jadeite (Jade)
Jadeite, NaAlSi₂O₆
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
Petrified Wood
Silicified Wood (SiO2)
Petrified Wood (Black / Carbonized)
Silicon Dioxide (Quartz/Chalcedony replacing Organic Matter)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Petrified Wood
Fossilized Wood (silicified wood)
Leopard Skin Jasper or Ring Jasper
Microcrystalline Quartz (Chalcedony with impurities)