Tumbled quartz-rich stone, possibly milky quartz or quartzite
Quartz (SiO₂), potentially quartzite if composed of recrystallized quartz grains
mineral
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Minerals
Browse minerals specimens identified by the Rock Identifier community.
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White quartz bead bracelet (likely milky quartz)
Quartz, silicon dioxide (SiO₂), usually microcrystalline or cloudy crystalline quartz
mineral
Tumbled quartz pebble
Quartz (SiO₂), likely iron-stained or included quartz
mineral
Milky quartz pebble
Quartz, silicon dioxide (SiO₂)
mineral
Clear quartz crystal fragment
Quartz, silicon dioxide (SiO₂)
mineral
Quartz crystal fragment
Quartz (silicon dioxide, SiO₂)
mineral
Clear quartz sphere
Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Tumbled milky quartz
Quartz, SiO₂
mineral
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Himalayan Pink Salt
Halite (NaCl) with trace minerals
mineral
Raw Pink Salt (Himalayan Salt)
Halite (NaCl with trace minerals)
mineral
Himalayan Pink Salt
Halite (NaCl) with trace minerals
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace minerals
mineral
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Mineral
Yellow Ochre
Goethite-rich clay (Hydrated Iron Oxide: FeO(OH)·nH₂O)
mineral
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Granite
Granite
igneous
Granite fragment
Granite
igneous
Gabbro (Indigo Gabbro)
Gabbro (mafic intrusive igneous rock)
igneous
Granite
Intrusive Igneous Rock
igneous
Kimberlite
Ultramafic igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Small quartz crystal cluster (likely druzy quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (typically with iron oxide/hematite cement)
sedimentary
Greenstone
Metamorphosed Mafic Igneous Rock
metamorphic
Orange Calcite
Calcite (CaCO3)
Mineral
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
mineral
Copper Ore / Altered Granodiorite
Cupriferous rock with silicate gangue
mineral
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Porphyritic basalt (likely amygdaloidal basalt)
Basalt, a mafic volcanic rock; composition typically plagioclase + pyroxene, with possible olivine and vesicle-filling minerals
igneous
Likely weathered stone or mineral fragment
Unidentified fine-grained silicate rock; possible basalt, greenstone, or serpentine
mineral
Weathered gray stone, possibly basalt or granitic rock
Indeterminate fine- to medium-grained silicate rock; possible basalt, diabase, or weathered granite
igneous
Milky quartz (rough quartz crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Quartz Geode Fragment
Silicon dioxide (SiO2) within a nodule
sedimentary
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral