Ferruginous Quartz
Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)
Category
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Tiger's Eye
Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite
Gold Nugget
Native Gold (Au)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
Garnet Schist
Garnetiferous Mica Schist
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Green Tourmaline
Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
Green Slate (Greenstone)
Metamorphic shale (varied composition)
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
Greenschist
Chlorite-actinolite schist
Citrine
Crystalline Quartz (SiO2) with iron impurities
Citrine
Silicon dioxide (SiO2)
Green Adventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
Bornite
Bornite (Cu5FeS4)
Gneiss
Gneiss
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz (with Chlorite/Mineral Inclusions)
Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Citrine
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
Amazonite
K(AlSi3O8)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)