Gold Flake
Native Gold (Au)
mineral
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Learn about Man Made Material (Jewelry, Metal Alloy) in the encyclopedia
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Diamond
Diamond (pure native carbon, C)
mineral
Flint
Silicon Dioxide (SiO2) - Chert variety
sedimentary
Pyrope Garnet (Bohemian Garnets)
Pyrope (from the group Mg3Al2(SiO4)3)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
Basalt
Basalt
Igneous
Sapphire in a ring
Corundum (Al2O3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace inclusions
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Black Onyx
Chalcedony (SiO2)
gemstone
Lavender Quartz (appearing as beads) and Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Gold Flakes
Native Gold (Au)
mineral
Coquina
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Aura Quartz (Pink/Magenta Aura Quartz)
Silicon Dioxide (SiO2) treated with vapor-deposited precious metals
mineral
Lepidolite on Matrix
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Sea Glass
Amorphous Silica (Glass) SiO2
Mineraloid (Man-made origin)
Gold
Native Gold (Au)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
metamorphic (man-made)
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Brecciated jasper (likely red-and-cream jasper)
Jasper, an opaque microcrystalline variety of quartz; primarily cryptocrystalline SiO₂ with iron-oxide staining and possible chalcedony/quartz veining
gemstone
Silver (Native Element)
Silver (Ag) in an alloy of 90% Silver and 10% Copper
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Diamond
Carbon (C)
mineral
Red Agate (Carnelian)
Silicon Dioxide (SiO2)
gemstone
Serpentinite
Serpentinite (complex silicate mineral group (Mg,Fe)3Si2O5(OH)4)
metamorphic
Diamond (or Diamond Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Black Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Sedimentary
Sea Glass (Cobalt Blue)
Amorphous Silica (Glass with Cobalt additives)
Anthropogenic specimen (man-made)
Beryl (Emerald Variety)
Beryllium Aluminum Silicate (Be3Al2(SiO3)6)
mineral
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert Pebble/Nodule
Chert (a microcrystalline or cryptocrystalline sedimentary form of quartz, SiO2)
Sedimentary
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
sedimentary
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral