Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineral (Specifically, A Variety Of The Mineral Species Pyrope Almandine Garnet)
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
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Epidote (Greenstone)
Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)
metamorphic
Schist
Schist (Metamorphic Rock)
metamorphic
Polished brecciated jasper
Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
mineral
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Jadeite (Jade)
Jadeite (NaAlSi2O6)
metamorphic
Blue Calcite
Calcite (CaCO3)
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Likely mica-rich schist
Mica schist, composed mainly of quartz and mica (muscovite and/or biotite)
metamorphic
Apricot Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Ruby (Raw Corundum)
Corundum (Al2O3 with Chromium impurities)
mineral
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Mineral in Igneous Rock
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Weathered agate or chalcedony nodule
Microcrystalline quartz (SiO₂), likely chalcedony/agate
mineral
Schist
Mica Schist (variety: Muscovite/Biotite Schist)
metamorphic
Raw ruby (corundum)
Ruby variety of corundum, aluminum oxide (Al₂O₃), colored chiefly by chromium
gemstone
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Polished/tumbled jasper, likely ocean jasper or brecciated jasper
Jasper: microcrystalline quartz (SiO₂) with iron oxides and other silicate impurities
mineral
Small pale stone, possibly quartz or limestone
Indeterminate from image; likely quartz (SiO₂) or calcite-rich limestone (CaCO₃)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)
igneous
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) - Variety of Chalcedony/Quartz
mineral
Moonstone
Adularia (orthoclase feldspar variety)
mineral
Polished white agate or chalcedony bead
Microcrystalline quartz (SiO₂), likely chalcedony/agate with iron-oxide staining or a brown mineral inclusion
gemstone
Fossil Coral
Hexagonaria (Rugose coral) / Rugosa
fossil
Orange Calcite (Iron-Stained)
Calcium Carbonate (CaCO3)
mineral
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
metamorphic
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Polished orbicular jasper
Jasper, a microcrystalline variety of quartz (SiO₂), colored by iron oxides and other accessory minerals
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red jasper pebble
Jasper, opaque microcrystalline quartz (SiO₂), colored mainly by iron oxides
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Polished brecciated jasper
Jasper: microcrystalline quartz (SiO₂) with iron-oxide and other mineral inclusions
metamorphic
Multi-Gemstone Quartz Bracelet (Amethyst, Aventurine, Rose Quartz, Clear Quartz)
Silicon Dioxide (SiO2) mixture
gemstone
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral