Jasper (Green variety)
SiO2 (Silicon Dioxide with iron/chlorite inclusions)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
Yellow Jasper (Iron-stained Quartzite/Chert)
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (Goehite/Limonite) inclusions
sedimentary
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with impurities of Iron or Goethite
sedimentary
Bumble Bee Jasper
Volcanic Tuff (mixture of SiO2, CaCo3, S, and As2S3)
igneous
Pink Tourmaline in Quartz Matrix
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
mineral
Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite)
Orbicular Quartz Diorite / Tonalite
igneous
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)
Jasper (likely Brown or Brecciated)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Banded Agate (specifically sardonyx or carnelian agate variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)
metamorphic
Zebra Jasper
Silicon dioxide (SiO2) with various impurities
Sedimentary
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (specifically Chalcedony/Flint variant)
Silicon Dioxide (SiO2)
sedimentary
Tiger's Eye (specifically Blue Tiger's Eye / Falcon's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Dendritic Agate (Tumbled)
Silicon Dioxide (SiO2) with inclusions
mineral
Oyster Shell (Aragonite/Calcite)
Calcium Carbonate (CaCO3)
sedimentary
Jasper
Silicon dioxide (SiO2)
Mineral
White Quartz (Milky Quartz Mushroom)
Silicon Dioxide (SiO2)
mineral
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Chert (Chalcedony/Flint)
Silicon Dioxide (SiO2)
sedimentary
Blue Tiger's Eye
Silicon Dioxide (SiO2) with Crocidolite inclusions
Mineral (Pseudomorph)
Citrine
Quartz (SiO2) - variety Citrine
Mineral
Fancy Jasper (Mookaite style)
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Pietersite
Brecciated Crocidolite in Quartz (Chalcedony)
metamorphic
Jasper or Chert with Quartz Vugs
Silicon Dioxide (SiO2)
sedimentary
Beryl (Emerald Variety)
Beryllium Aluminum Silicate (Be3Al2(SiO3)6)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Labradorite
(Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
mineral
Jasper (likely Lake Superior Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary (silica-rich mineral variety)
Amazonite
Amazonite (KAlSi3O8 – a variety of Microcline, a Potassium Feldspar)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary