Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Mineral
Category
Mineraloid Like Synthetic Material
Browse mineraloid like synthetic material specimens identified by the Rock Identifier community.
Learn about Mineraloid Like Synthetic Material in the encyclopedia
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Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
mineral
Amber
Amber (Fossilized Tree Resin)
Mineral
Blue faceted gemstones, likely blue sapphire
Corundum (Al₂O₃), blue varieties colored chiefly by iron and titanium
gemstone
Gold Sheen Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Snowflake Obsidian (Flower Jasper variant)
Vitreous volcanic silicate with cristobalite inclusions
igneous
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Amethyst (Tumbled)
Silicon Dioxide (SiO2) with Fe3+ impurities
mineral
Amber
Succinite (Fossilized Resin C10H16O)
Organic Mineraloid
Amber
Succinite (Formula: C10H16O)
Organic Mineraloid
Diamond (faceted)
Diamond (Pure Carbon, C)
mineral
Sandstone
Sandstone (SiO2-rich clastic sedimentary rock)
sedimentary
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Opalite
Synthetic Opalite (Man-made glass)
mineral
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
mineral
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Organic Mineraloid
Tektite (Indochinite)
Tektite (High-silica natural glass)
mineraloid / impact glass
Red faceted gemstone jewelry setting
Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing
gemstone
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)
Mineral
Amber
Succinite (specifically for Baltic amber); Fossilized Tree Resin (C10H16O)
Organic Mineraloid
Blue Sapphire
Corundum (Al2O3)
mineral
Obsidian
Obsidian
igneous
Petrified Wood
Silicified Wood
fossil
Amber
Succinite (formula varies, primarily C10H16O)
Mineraloid (Organic)
Diamond
Diamond (pure carbon; C)
Mineral
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Dyed Agate
Agate (Cryptocrystalline Quartz), SiO2
Mineral
Amber
Succinite (specifically Baltic Amber) - Formula: C10H16O (approximate)
Organic Mineraloid
Amber
Succinite (fossilized tree resin)
Organic Mineraloid
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Dyed Agate
Chalcedony (SiO2)
mineral
Pearl-embellished decorative cross
Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones
gemstone
Coquina
Bioclastic Limestone
sedimentary
Ammolite
Biogenic gemstone (Aragonite, CaCO3)
mineral
Obsidian
Volcanic Glass (Silica / SiO2)
igneous
Mahogany Obsidian
Volcanic glass containing Hematite or Magnetite (SiO2 + Fe2O3)
igneous
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
mineral (synthetic)
Amber
Succinite
Organic (Mineraloid)
Amber
Succinicum (Succinite); C10H16O
Mineraloid (Organic)
Pearl (Biogenic Mineral)
Calcium Carbonate (primarily Aragonite) with Conchiolin; CaCO3
mineral