Red Jasper
SiO2 (Silicon Dioxide with Iron inclusions)
sedimentary
Category
Metamorphic Or Igneous With Mineral Inclusion
Browse metamorphic or igneous with mineral inclusion specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic
Amber
Succinite (Organic Gemstone)
mineral
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
metamorphic
Quartz
Quartz (SiO2, Silicon Dioxide)
Mineral
Emerald
Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium
Mineral (Gemstone variety of Beryl)
Pink Granite
Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
Mineral
Quartz Crystal
Quartz (SiO₂)
Mineral
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Mineral
Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Rough Dark Green Sapphire
Corundum (Al2O3)
mineral
Biotite Mica
Biotite, K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Gneiss Pebble
Gneiss
metamorphic
Rutile in Quartz (Rutilated Quartz)
SiO2 with TiO2 inclusions
Mineral
Banded Gneiss (with possible weathered sulfide or iron staining)
Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides
Metamorphic
Rhyolitic Tuff (Breccia Type)
Rhyolitic Pyroclastic Rock (Mixed Silicates including Quartz, Feldspar, and Volcanic Glass)
igneous
Chrome Diopside
Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
mineral
Citrine Quartz
Silicon Dioxide (SiO2) - Ferric Iron impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Staurolite
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Basalt
Basalt (extrusive igneous rock)
Igneous
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Porphyritic Basalt (likely Chinese Writing Stone)
Porphyritic Basalt / Plagioclase Feldspar in Basal Matrix
igneous
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Mineral
Unakite
Epidotized Granite
metamorphic
Basalt
Basalt (Mafic Extrusive)
igneous
Chrysocolla and Malachite Beads
Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)
mineral
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Mineral
Obsidian
Volcanic glass (high silica content, usually >70% SiO2)
igneous
Granite
Granite (a felsic intrusive igneous rock)
Igneous Rock
Que Sera Stone (Llanite)
Rhyolite Porphyry with Blue Quartz and Feldspar
igneous
Basalt
Mafic Volcanic Basalt (Major minerals: Plagioclase feldspar, Pyroxene; Minor: Olivine, Magnetite)
igneous
Quartzite Pebbles
Quartzite (SiO2)
metamorphic
Amber / Copal
Succinite (fossilized tree resin)
mineraloid
Blue Tiger's Eye
Riebeckite (crocidolite variety)
Mineral
Granite
Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Mahogany Obsidian
Volcanic Glass with Hematite/Magnetite inclusions
igneous