Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Category
Metamorphic (Pseudo Igneous)
Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.
Banded River Rock / Gneiss (highly weathered)
Gneiss
Metamorphic rock
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone / Chert
Cryptocrystalline Quartz (SiO2) or Altered Basalt
sedimentary or metamorphic
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Mineral
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Mineral/Semiprecious Gemstone (variety of Quartz)
Quartz on Greenstone
Silicon Dioxide (SiO2) on Altered Igneous Geologic Unit
metamorphic
Hematite
Hematite (Fe2O3)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Banded Gneiss (with possible weathered sulfide or iron staining)
Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides
Metamorphic
Banded Gneiss
Gneiss
Metamorphic
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Metamorphic
Quartzite (river pebble) and Gabbro (crushed rock)
Quartzite (metamorphosed Quartz Sandstone, SiO2) and Gabbro (Plagioclase-Clinopyroxene rock)
Metamorphic and Igneous
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Mineral
Clear Quartz (Rock Crystal)
Quartz (SiO₂)
Mineral
Quartz (likely a weathered/tumbled piece)
Quartz (SiO₂)
Mineral
Graphite
Graphite (Carbon, C)
Mineral
Quartz
Quartz (SiO₂)
Mineral
Marble
Metamorphosed Limestone/Dolomite
metamorphic
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst (Geode Fragment)
Silicon Dioxide (SiO2 with iron impurities)
mineral
Magnetite
Magnetite (Fe3O4)
Mineral
Gneiss (likely)
Gneiss
Metamorphic
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Mineral
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
mineral
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Orange Quartz with Hematite inclusions
Quartz (SiO2) with Hematite (Fe2O3) inclusions
Mineral
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Mineral
Quartz (various varieties)
SiO₂ (Silicon Dioxide)
Mineral
Banded Gneiss
Gneiss (pronounced "nice")
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))
mineral
Quartz (likely Milky Quartz or Chalcedony)
Quartz (SiO2 - Silicon Dioxide)
Mineral