Orange Calcite (likely polished specimen)
Calcite
Category
Browse carved stone specimens identified by the Rock Identifier community.
Orange Calcite (likely polished specimen)
Calcite
Obsidian (black volcanic glass)
Obsidian; predominantly rhyolitic volcanic glass, mainly SiO₂ with minor feldspar, quartz, and iron oxides
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Jadeite
NaAlSi2O6
Hematite
Iron(III) oxide (Fe2O3)
Epidote
Ca2(Al, Fe)3(SiO4)3(OH)
Fluorite
Calcium Fluoride (CaF2)
Septarian Nodule
Septarian Concretion (Calcite, Aragonite, and Limestone)
Cinnabar in Quartz
Mercury sulfide (HgS) in silicon dioxide (SiO2)
Fossilized Bone Fragment
Vertebrate Fossil Material (Apatite/Calcium Phosphate)
Petrified Wood
Silicified Wood (SiO2)
Raw Amber / Resin Mineral
Succinite (Fossilized Tree Resin)
Baltic Amber (Black)
Succinite (Fossilized Tree Resin)
Gypsum (Satin Spar variety)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
White Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Blue Lace Agate (Polished Point)
Silicon Dioxide (SiO2) - Variety of Chalcedony
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
Polished serpentine pendulum
Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
Obsidian
Volcanic Glass (SiO2)
Magnesite or Howlite with Matrix
Magnesium carbonate (MgCO3) or Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Malachite
Copper Carbonate Hydroxide, Cu2CO3(OH)2
Blue Chalcedony
Silicon Dioxide (SiO2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Igneous Rock with Arfvedsonite
Red Aventurine (Strawberry Quartz / Sunstone Quartz)
Silicon Dioxide with Hematite/Goethite inclusions (SiO2)
Green Adventurine
Quartz (SiO2) with Fuchsite inclusions
Carnelian (Tumbled Chalcedony)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Limestone
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Tiger's Eye and Carnelian Quartz
Silicon Dioxide (SiO2)
Aventurine
Silicon Dioxide (SiO2) with inclusions
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
Carnelian Agate
Silicon Dioxide (SiO2)
Bloodstone
Heliotrope (Cryptocrystalline Quartz, SiO2)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)