Beryl (likely Aquamarine or Green Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
Yellow Aventurine
Quartzite with inclusions (SiO2)
metamorphic
Chert (Field-collected specimen)
Chert (Crystalline Silica, SiO2)
sedimentary
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
sedimentary
Chert Pebble / Brachiopod Fossil Internal Mold
Silicon Dioxide (SiO2) / Fossil: Brachiopoda (generic internal mold)
sedimentary
Chert (Nodule)
Chert (SiO2)
sedimentary
Chert (River Stone/Pebble)
Chert (SiO2)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Jasper Agate
Silicon dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Ferruginous Quartzite (Chert)
Quartzite with Iron inclusions (SiO2 + Fe2O3)
metamorphic
Graphic Granite
Graphic Granite (variety of Pegmatite)
igneous
Chert / Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
metamorphic
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Mineral
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Chert (Yellow Jasper/River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Mahogany Obsidian
Volcanic Glass with Hematite/Magnetite (SiO2 + Fe2O3)
igneous
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Granite (Crystalline Granite)
Igneous Intrusive Rock (Felsic Plutonic)
igneous
Jasper
Silicon dioxide (SiO2)
sedimentary
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
sedimentary
Chert (and Limestone)
Silicon Dioxide (SiO2)
sedimentary
Ruby (Pink to Red Corundum)
Al2O3 (Corundum with Chromium impurities)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Que Sera Stone (Llanite)
Rhyolite containing blue quartz and feldspar
igneous
Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Charoite
Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)
metamorphic
Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)
Diorite (Igneous rock, intrusive, intermediate composition)
Igneous Rock
Vesicular Basalt (Scoria)
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (variety of Quartz)
Granite
Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Conglomerate
Conglomerate (Sedimentary Clastic Rock)
sedimentary