Septarian Nodule
Septarian Concretion (Calcite, Aragonite, Limestone)
Category
Browse carved stone specimens identified by the Rock Identifier community.
Septarian Nodule
Septarian Concretion (Calcite, Aragonite, Limestone)
Basalt
Basalt (Mafic igneous rock)
Sandstone
Quartzose Sandstone / Lithic Sandstone
Mica Schist
Mica Schist (Complex Silicate Rock)
Carnelian
Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)
Sandstone
Arenite (SiO2 secondary)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Jasper containing Agate (Jaspagate)
Silicon Dioxide (SiO2)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2AlSi3O10(OH,F)2)
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Rose Quartz
Silicon dioxide (SiO2)
Clear quartz sphere
Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz
Carnelian
Carnelian (variety of Chalcedony, SiO2)
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Red Aventurine / Orange Quartzite
Silicon Dioxide (SiO2) with hematite/goethite inclusions
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Flower Agate
Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide impurities
Stichtite (often found in Serpentinite)
Stichtite Mg6Cr2CO3(OH)16·4H2O
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Tree Agate
Quartz (SiO2) with Chlorite/Hornblende inclusions
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Granite Pebble
Granite (Felsic Intrusive Igneous Rock)
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
Carnelian Agate
Silicon dioxide (SiO2) - variety of chalcedony
Polished serpentine pebble
Serpentinite, chiefly serpentine-group minerals (chrysotile, lizardite, antigorite)
Serpentinite
Serpentinite (group of hydrous magnesium iron phyllosilicates)
Amazonite
Microcline feldspar (KAlSi3O8)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Fossiliferous Limestone (Gastropod / Crinoid Fossil Rock)
Biogenic Sedimentary Rock (CaCO3)
Unakite
Altered Granite (Epidotized Granite)
Carnelian (Polished Cabochon)
Silicon Dioxide (SiO2) with iron oxide impurities
Tumbled Hematite with Quartz/Chert (Specular Hematite)
Fe2O3 (Iron Oxide)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Granite
Granite (Felsic Plutonic Rock)
Diorite
Intermediate plutonic igneous rock