Ferruginous Quartz
Iron-stained Quartz (SiO2 with Fe2O3 impurities)
mineral
Category
Organic Gem Material (Botanical)
Browse organic gem material (botanical) specimens identified by the Rock Identifier community.
Learn about Organic Gem Material (Botanical) in the encyclopedia
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Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Diamond
C (Native Carbon)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Green Jasper with Agate Banding
Silicon Dioxide (SiO2) with impurities of ferrous silicate or chlorite
sedimentary (chemical/biological origin)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Amethyst (SiO2 with iron impurities)
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Amethyst (Druzy Cluster)
Amethyst (Silicon Dioxide with Iron impurities), SiO2
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Rhodonite in Quartz Matrix
Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn,Fe,Mg,Ca)SiO3
mineral
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (with Hematite inclusions)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Chalcedony (Silicon Dioxide, SiO2) with iron oxide inclusions
sedimentary
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Actinolite/Tremolite series)
metamorphic
Amethyst (Quartz Cluster)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Smoky Quartz
Quartz (Silicon Dioxide), Formula: SiO2
mineral
Amethyst Geode
Amethyst (Silicon Dioxide, SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions
sedimentary
Smoky Quartz Geode Slice
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Red Jasper (possibly Brecciated)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral