Likely blue glass or synthetic gemstone jewelry
Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass
gemstone
Category
Mineral (Man Made Glass, Not Natural)
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Learn about Mineral (Man Made Glass, Not Natural) in the encyclopedia
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Sandstone
Arenite (variable SiO2 composition)
sedimentary
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
mineral
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with trace aluminum and irradiation
mineral
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Diamond (as set in a gold ring)
Carbon (C)
mineral
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Diamond (or Diamond Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Sedimentary (Anthropogenic)
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Strawberry Quartz (or Pink Aventurine)
Quartz with Hematite/Goethite inclusions (SiO2)
mineral
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
sedimentary
Dyed Agate / Painted Stone
Silicon Dioxide (SiO2) with artificial pigment
sedimentary (base), then artificial
Jasper Marble
Silicon Dioxide (SiO2) with Impurities
sedimentary
Amethyst (with Pyrite and other minerals)
Silicon Dioxide (SiO2)
mineral
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Diamond
Diamond (pure native carbon, C)
mineral
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Blue Goldstone
Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)
Synthetic (Man-made Glass)
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Diamond (in Jewelry Setting)
Carbon (C)
gemstone
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Diamond (as featured in jewelry)
Diamond (C - pure carbon)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Diamond (Cut jewelry specimen)
Diamond (pure Carbon, C)
mineral
Asphalt Chunk
Asphalt concrete
man-made composite
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Diamond
Native Carbon (C)
mineral
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object