Rough Blue Sapphire
Corundum (Al2O3)
Category
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Rough Blue Sapphire
Corundum (Al2O3)
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
Quartz Pebble
Silicon Dioxide (SiO2)
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
Native Gold
Native Gold (Au)
Yellow Jasper
Silica (Silicon Dioxide, SiO2) with iron inclusions
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix
Cloud Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rough Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Vein-bearing metamorphic rock, likely gneiss or schist
Banded silicate rock; likely quartz–feldspar–mica gneiss with a quartz vein
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Epidote and Quartz in Basalt
Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt
Wishing Stone (Basalt/Metabasalt with Quartz-Feldspar Vein)
Veined Metabasalt / Veined Greywacke
Emerald with Matrix (Emerald in Mica Schist)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Citrine (Heat-treated Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Serpentinite
Serpentine group minerals ((Mg, Fe)3Si2O5(OH)4)
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Sandstone pebble
Sandstone (siliciclastic sedimentary rock)
Wishing Stone (Quartz-veined Sedimentary Pebble)
Silicified sedimentary rock with quartz vein (SiO2)
Tumbled or naturally etched mica-rich mineral specimen, likely muscovite
Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂; possibly phlogopite mica
Likely polished bronzite or serpentine-rich rock
Probable bronzite, an iron-bearing orthopyroxene (Mg,Fe)SiO₃; exact identification requires testing
Garnet
Almandine (Fe3Al2(SiO4)3)
Milky Quartz with Schist Matrix
Silicon Dioxide (SiO2) with Mica Schist Matrix
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Clear quartz crystal fragment
Quartz, silicon dioxide (SiO₂)
Milky Quartz Pebble with Matrix
Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Dendritic Agate
Chalcedony (Silicon Dioxide) with Manganese or Iron Oxide inclusions
Lapis Lazuli
Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite
Agate / Chalcedony
Silicon dioxide (SiO2)
Milky Quartz with Hematite/Limonite staining
Silicon Dioxide (SiO2)
Quartz Druzy on Matrix
Silicon Dioxide (SiO2)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz crystals
Honey Calcite Geode Segment
Calcite (Calcium Carbonate, CaCO3)
Milky Quartz on Matrix
Quartz (Silicon Dioxide, SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Milky quartz
Quartz (silicon dioxide, SiO₂)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Pyrite with Vesicular Matrix
Iron Disulfide (FeS2)