Sea Glass (Frosted Quartz/Glass)
Amorphous Silicon Dioxide (SiO2)
Mineraloid
Category
Mineraloid
Browse mineraloid specimens identified by the Rock Identifier community.
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Amber
Succinite (approximate formula C10H16O)
mineraloid
Pearls
Aragonite (calcium carbonate) and Conchiolin
Mineraloid
Amber
Succinite (approximate formula C10H16O)
mineraloid
Tektite (Indochinite)
Tektite (SiO2 + Al2O3)
mineraloid
Amber
Succinite
Mineraloid
Conch Pearl
Calcareous concretion (CaCO3)
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Mineraloid
Amber (with potentially inclusions)
Succinite (Fossilized Tree Resin)
Mineraloid
Black Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Fire Opal (in matrix)
Hydrated Silica (SiO2·nH2O)
Mineraloid
Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Amber
Succinite (specifically for Baltic amber); approximate formula C10H16O
Mineraloid
Amber
Succinite
mineraloid
Ethiopian Opal (Welo Opal)
Hydrated Amorphous Silica (SiO2·nH2O)
mineraloid
Amber (specifically Burmese Amber or Burmite)
Succiniferous fossil resin (C10H16O)
mineraloid
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Amber
Succinite (with approximate formula C10H16O)
mineraloid
Fulgurite
Liesegang (Fulgurite)
Mineraloid
Amber (Raw)
Succinite (Fossilized Resin)
mineraloid
Amber / Copal
Succinite (fossilized resin)
mineraloid
Amber
Succinurite (C10H16O)
mineraloid
Amber
Succinite (fossilized tree resin)
mineraloid
Amber
Succinite (fossilized resin); C10H16O
mineraloid
Baltic Amber
Succinite (Polmerized conifer resin)
mineraloid
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Fulgurite
Fulgurite (Lechatelierite-rich fused silica)
mineraloid
Amber
Succinite (Formula: C10H16O)
Mineraloid
Amber
Succinite (a variety of fossilized tree resin); chemical formula appx. C10H16O
mineraloid
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Sea Glass (often mistaken for Gemstones)
Amorphous Silica (SiO2) with trace additives
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (C10H16O)
mineraloid
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Amber / Copal
Fossilized Tree Resin (Succinate)
Mineraloid
Obsidian
Obsidian (volcanic glass), primarily SiO2 (silicon dioxide)
igneous
Obsidian
Volcanic glass (mainly SiO2 with inclusions)
igneous
Mahogany Obsidian
Volcanic glass containing Hematite or Magnetite (SiO2 + Fe2O3)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Limonite (Iron Stone/Ocher)
Limonite (FeO(OH)·nH2O)
mineral