Rough Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Category
Metamorphic (Likely Gneiss Or Schist Based On Texture)
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
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Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Raw Emerald (Emerald Beryl)
Beryl (Be3Al2Si6O18) with chromium/vanadium impurities
mineral
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Mineral
Sandstone
Arenite (typically SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Quartz
Silicon dioxide (SiO2)
Mineral
Emerald in Quartz Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
gemstone
Rough Emerald Crystals
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Weathered quartz-rich rock, likely granite or granitic gneiss
Granite (quartz–feldspar–mica aggregate), possibly weathered granitic gneiss
igneous
Greenstone
Metabasalt / Chlorite Schist
metamorphic
Banded gneiss pebble
Biotite–quartz–feldspar gneiss (composition variable)
metamorphic
Garnet Gneiss
Gneiss containing Almandine Garnet
metamorphic
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Black Tourmaline
Schorl (Sodium iron aluminum boron silicate hydroxide)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Feldspar in Matrix
Feldspar group minerals in metamorphic or igneous matrix
igneous
Biotite-bearing granite or granitic gneiss
Quartz–feldspar granite with biotite mica; possibly weakly foliated gneiss
igneous
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Ruby (in a ring setting)
Corundum (Al2O3:Cr)
gemstone
Gold
Native gold (Au)
mineral
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Quartz
Quartz (SiO₂)
Mineral
Granite
Phaneritic Plutonic Felsic Rock (K-Feldspar + Quartz + Plagioclase)
igneous
Granite
Felsic intrusive igneous rock
igneous
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
mineral
Ruby (faceted)
Corundum (Al2O3 with chromium traces)
gemstone
Ruby in Matrix
Corundum (Al2O3)
mineral
Garnet Schist
Garnetiferous Micaceous Schist
metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Mica Schist
Metamorphic Rock (Schistose)
metamorphic
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Metamorphic/Igneous (Hydrothermal)