Yellow Aventurine
Quartz (SiO2) with inclusions
mineral
Category
Mineral Or Sedimentary Rock (With Mineral Inclusions)
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
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Weathered Sedimentary Rock
Sedimentary Rock
Sedimentary
Orbicular Jasper (Ocean Jasper)
Silicon Dioxide (SiO2) with various inclusions
mineral
Tumbled tree agate (dendritic agate)
Cryptocrystalline quartz, SiO₂, with manganese/iron-oxide dendrites
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide staining/cementing)
sedimentary
Granite Gneiss
Gneiss (Polymetamorphic Quartz-Feldspar-Mica rock)
metamorphic
Jasper and Basalt (Lake Superior Agate or Jasper Pebble)
Silicified rock / Cryptocrystalline quartz (SiO2) with basalt matrix
sedimentary
Montana Moss Agate
Chalcedony (SiO2) with Manganese/Iron oxide inclusions
sedimentary
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
sedimentary
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Polished brecciated jasper (likely ocean jasper or orbicular jasper)
Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions
metamorphic
Red Sandstone
Arenite (ferruginous sandstone)
sedimentary
Mixed gemstone jewelry collection
Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline
gemstone
Unidentifiable Rock Fragment
Uncertain
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
sedimentary
Quartz with Sulfide Inclusions
Silicon Dioxide (SiO2) with metallic mineral inclusions
mineral
Copper-bearing Mica Schist
Mica Schist with Native Copper inclusions
metamorphic
Basalt with Quartz Infill
Basalt (Mafic Extrusive Volcanic Rock)
igneous
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Sandstone Beach Pebble
Clastic Sandstone (SiO2 - Quartz-dominant)
sedimentary
Basalt with Peridotite Xenolith
Mafic Igneous Rock with Peridotite Inclusion (Olivine-rich)
igneous
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite (Fe2O3·nH2O) inclusions
mineral
Quartz with Spessartine Garnet and Iron Staining
Silicon Dioxide (SiO2) with Almandine-Spessartine (Mn3Al2(SiO4)3)
mineral
Yellow Chalcedony (common opal or chert variant)
Silicon Dioxide (SiO2)
sedimentary (mineraloid/microcrystalline quartz)
Green Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite
sedimentary
Epidosite (Epidote-Quartz rock)
Epidote-rich hydrothermal rock
metamorphic
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Granite Pebble (Weathered)
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (composed mainly of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Mica)
igneous
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
gemstone
Sandstone
Arenite (primarily SiO2)
sedimentary
Emerald (or possibly Green Glass / Slag)
Beryl (Be3Al2(SiO3)6)
gemstone
Amber
Succinite (with formula approximately C10H16O)
Organic mineraloid
Milky quartz vein fragment (likely quartz with minor feldspar/mica)
Quartz, SiO₂; possibly associated feldspar and mica
mineral
Jasper
Jasper / Silicon Dioxide (SiO₂)
sedimentary
Emerald in Matrix
Beryl (Be3Al2Si6O18 with Chromium/Vanadium traces)
gemstone
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral
Polished yellow jasper or opaque chalcedony bead
Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper
mineral
Likely rough quartz fragment
Quartz (SiO₂), possibly iron-stained or included quartz
mineral
Hag Stone
Perforated sedimentary rock (typically limestone, sandstone, or flint)
sedimentary
Polished brown jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
mineral