Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
mineral
Category
Synthetic (Man Made Material Mimicking Natural Stone)
Browse synthetic (man made material mimicking natural stone) specimens identified by the Rock Identifier community.
Learn about Synthetic (Man Made Material Mimicking Natural Stone) in the encyclopedia
View all →
Diamond
Carbon (C)
mineral
Diamond or Cubic Zirconia
Carbon (diamond) or Zirconium dioxide (cubic zirconia)
gemstone
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sedimentary or Metamorphic (base substrate)
Brecciated Jasper
Brecciated Jasper (Microcrystalline Quartz / SiO2)
sedimentary
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
mineral
Granite
Phaneritic Igneous Rock (composed mostly of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Dark rounded pebble, likely basalt or slag
Probable fine-grained mafic rock; possibly basalt (plagioclase–pyroxene) or industrial iron/steel slag
igneous
Flint / Chert
Microcrystalline Quartz (SiO2)
sedimentary
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
mineral
Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
sedimentary
Diamond (or Diamond Simulant)
Carbon (C)
gemstone
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Beach Pebble Quartzite / Chalcedony Pebble
Silicon Dioxide (SiO2)
metamorphic
Blue cabochon gemstone ring
Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel
gemstone
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
metamorphic
Dyed Agate Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Brecciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Synthetic/Man-made Material
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Tumbled iron-rich stone, likely hematite-bearing jasper
Jasper (microcrystalline quartz, SiO₂) with iron oxides, chiefly hematite/goethite
mineral
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Diamond
Carbon (C)
gemstone
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
sedimentary
Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Rough Diamond
Native Carbon (C)
mineral
Wood Beads (Palmwood/Ebony)
Various species for wood, but often refers to woods like Palmwood (e.g., Borassus flabellifer) or Ebony (Diospyros spp.) for their distinctive grain and hardness.
Organic Gem Material (Botanical)
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Sedimentary
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
mineral
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Diamond
Carbon (C)
mineral
Likely iron-rich rock or weathered metallic mineral fragment
Uncertain; possibly limonite/goethite or iron-bearing slag
mineral