Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Category
Mineral (Synthetic Glass)
Browse mineral (synthetic glass) specimens identified by the Rock Identifier community.
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Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)
igneous
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Muscovite Mica (Granitic Pegmatite)
Muscovite - KAl2(AlSi3O10)(OH)2
igneous
Prasiolite (Green Quartz) / Sea Glass Amalgam
SiO2 (Silicon Dioxide)
mineral
River Cobble (Quartz-rich Sandstone)
Arenite with iron oxide staining
sedimentary
Quartz Vein in Host Rock (Gneiss/Schist)
Silicon Dioxide (SiO2) within a metamorphic matrix
metamorphic
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Banded)
Microcrystalline Quartz (SiO2)
sedimentary
Snowflake Obsidian
Volcanic Glass (spherulitic Obsidian) - SiO2 (with Cristobalite inclusions)
igneous
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Red Jasper and Green Aventurine
Silicon dioxide (SiO2)
mineral
Quartz (Iron-Stained / Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Matrix
Silicon Dioxide (SiO2)
mineral
Iron-stained quartz (likely quartzite or quartz-rich rock)
Quartz, silicon dioxide (SiO₂), with iron-oxide staining
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
White quartz pebble
Quartz (SiO₂), likely milky quartz
mineral
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4 in Vesicular Basalt
igneous
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions (SiO2)
igneous
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Mahogany Obsidian
Volcanic Glass (SiO2 with Fe/Mg oxides)
igneous
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
igneous
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with inclusions of Dumortierite or similar minerals
mineral
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Cryptocrystalline Silica (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO₂)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral