Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Category
Crystal
Browse crystal specimens identified by the Rock Identifier community.
Quartz (Druzy or Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Mineral
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Porphyry (Flower Stone)
Porphyry (Andesite or Basalt matrix)
igneous
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Mineral
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Silver (Native Element / Alloy)
Silver (Ag)
mineral
Obsidian
Obsidian (Volcanic Glass, SiO2 + oxide impurities)
igneous
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Schist
Mica Schist
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Obsidian
Amorphous volcanic glass (SiO2)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Black Obsidian
Obsidian (Volcanic Glass)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
mineral
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
igneous
Yellow Quartz (Citrine/Yellow Jasper)
Silicon Dioxide (SiO2)
mineral
Beryl (Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
White Quartz Pebble (with possible Quartz Geode cavity)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Black Obsidian
Volcanic Glass (SiO2)
igneous
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
igneous
Yellow Beryl (Heliodor)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral