Opalite (likely man-made opalescent glass)
Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Opalite (likely man-made opalescent glass)
Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)
Diamond
Native Carbon (C)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
Sea Glass
Man-made silicate glass weathering product
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
Milky quartz (likely quartz crystal fragment)
Quartz, silicon dioxide (SiO₂)
Goldstone (Brown)
Aventurine Glass (Silicon Dioxide infused with Copper crystals)
Green obsidian (likely molded or heat-treated glass-like specimen)
Volcanic glass; predominantly rhyolitic composition (silica-rich amorphous SiO₂)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Sandstone Concretion
Limonitic Sandstone Concretion
Polished labradorite pendant
Labradorite, a calcium-rich plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
Colorless quartz crystal (likely quartz fragment)
Quartz, silicon dioxide (SiO₂)
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2AlSi3O10(OH)2)
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Black Obsidian
Amorphous volcanic glass (SiO2 + impurities)
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
Polished silver sheen obsidian heart
Obsidian (volcanic glass), primarily rhyolitic silica-rich glass
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Aluminum Slag
Anthropogenic Aluminum (Al)
Aura Quartz (Titanium Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
Ring with an Orange Inlay
N/A (Man-made object)
Quartz crystal (likely clear quartz)
Quartz, silicon dioxide (SiO₂)
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Tumbled milky chalcedony (likely common opalite-like quartz)
Chalcedony, microcrystalline SiO₂; possibly pale common opal, hydrated SiO₂·nH₂O
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by nature)
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
Green sea glass (likely slag glass or bottle glass)
Man-made soda-lime silicate glass; not a naturally occurring mineral
Polished black pebble, likely basalt
Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine