Jasper (brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides and other impurities
mineral
Category
Mineral (Gemstone Variety Of Beryl)
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Learn about Mineral (Gemstone Variety Of Beryl) in the encyclopedia
View all →
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Peridot (Olivine)
Olivine, (Mg,Fe)2SiO4
Mineral
Yellow Jasper
Jasper (variety of Quartz - SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Epidote (or Epidote-rich rock)
Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).
Mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks
Tumbled amethyst
Quartz, SiO₂; purple variety colored mainly by iron impurities and irradiation
gemstone
Fluorite
Calcium Fluoride (CaF2)
mineral
Fuchsite
Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Black Tourmaline (Schorl)
NaFe3Al6(BO3)3Si6O18(OH)4
Mineral
Obsidian
Volcanic Glass (Amorphous SiO2)
igneous
Quartz (Float/Abraded)
Quartz (SiO₂)
Mineral
Polished brecciated jasper (likely septarian or iron-rich jasper)
Microcrystalline quartz (chalcedony), SiO₂, with iron oxides and possibly calcite or other rock fragments
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pink Thulite (in Pumice-like texture)
Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Diamond
Carbon (C) with trace Boron
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Chert Pebble (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled pink calcite (probable)
Calcite, calcium carbonate (CaCO₃), likely manganocalcite variety
mineral
Banded Agate
Agate (Silicon Dioxide - SiO2)
mineral
Botryoidal Chalcedony
Chalcedony (SiO2)
Mineral
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock