Jasper
Silicon dioxide (SiO2)
sedimentary
Category
Mineralological Variety
Browse mineralological variety specimens identified by the Rock Identifier community.
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Red Jasper with Quartz and Hematite
Silicon Dioxide (SiO2) with Ferric Iron inclusions
sedimentary
Onyx Marble (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Green Kyanite
Kyanite (Al2SiO5)
mineral
Jasper (Cream/Yellow variety)
Silicon dioxide (SiO2)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with various inclusions
mineral
Jasper (Green Jasper/Heliotrope variety)
Silicon Dioxide (SiO2)
sedimentary
Red jasper (likely)
Microcrystalline quartz, SiO₂, colored red by iron oxides
mineral
Tumbled jasper, likely red/brown jasper
Microcrystalline quartz (chalcedony), mainly SiO₂, colored by iron oxides
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Mixed Mineral Bead Bracelet
Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)
gemstone
Jasper and Agate (Polished Pebble)
Chalcedony (SiO2 with impurities)
Sedimentary
Polished jasper (likely brecciated or scenic jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone
Milky Quartz
SiO2
mineral
Agate
SiO2
mineral
Likely red-and-green jasper (rough pebble)
Microcrystalline quartz (SiO₂), colored by iron oxides; exact identification requires testing
mineral
Chert or flint nodule
Microcrystalline quartz (SiO₂), commonly chalcedony with possible iron-oxide staining
sedimentary
Tumbled jasper (likely brecciated or ocean jasper)
Microcrystalline quartz (SiO₂), with iron-oxide staining and possible chalcedony
mineral
Polished agate (likely carnelian/mossy chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), with iron-oxide banding and possible inclusions
mineral
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
sedimentary
Rainbow Moonstone with Black Tourmaline
White Labradorite with Schorl (Na,Ca)(Al,Si)4O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (likely brecciated jasper)
Microcrystalline quartz, SiO₂; iron-oxide-stained chalcedony
sedimentary
Tumbled translucent quartz or chalcedony fragment
Silicon dioxide, SiO₂; likely quartz/chalcedony
mineral
Tumbled agate/chalcedony pebble
Microcrystalline quartz (SiO₂), likely brown/banded agate or jasper
mineral
Tumbled carnelian/chalcedony
Orange chalcedony (microcrystalline quartz), SiO₂; possibly iron-stained agate
mineral
Black Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Polished brecciated jasper
Jasper, microcrystalline quartz (SiO₂), with iron-oxide and pale silica-rich fragments
mineral
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Porphyry (Flower Stone)
Porphyry (Andesite or Basalt matrix)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Polished agate/geode slab
Banded chalcedony (microcrystalline quartz, SiO₂), likely with quartz crystals
mineral
Tumbled chalcedony (possibly agate)
Microcrystalline quartz, SiO₂ (chalcedony); banding is not clearly visible to confirm agate
mineral
Smoky quartz ring
Quartz (SiO₂), likely smoky quartz; the surrounding stones and metal cannot be identified reliably from the image.
gemstone
Jasper
SiO2
mineral
Tourmalinated Quartz
SiO2 with NaFe3+3Al6(BO3)3Si6O18(OH)4 inclusions
Mineral
Tumbled brown jasper
Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide impurities
mineral
Polished jasper pebble
Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide impurities
mineral
Corundum (Sapphire variant)
Aluminum Oxide (Al2O3)
mineral