Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic Or Sedimentary (With Staining)
Browse metamorphic or sedimentary (with staining) specimens identified by the Rock Identifier community.
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
River Cobble (Quartzite)
Meta-orthoquartzite
metamorphic
Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Epidosite (Epidote-rich rock)
Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Rainbow Moonstone with Black Tourmaline
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Banded Agate (Gray Agate)
Silicon Dioxide (SiO2) - Chalcedony
mineral
Banded Agate (Lace Agate)
Agate (Variety of Cryptocrystalline Quartz), SiO2
mineral
Rough Green Tourmaline (Verdelite)
Elbaite (Complex Borosilicate), Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
mineral
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
metamorphic
Red Garnet
Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
mineral
Corundum (Ruby/Sapphire crystal)
Al2O3 (Aluminum Oxide)
mineral
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
metamorphic
Wishing Stone (Gneiss or Basalt with Quartz Vein)
Gneiss or Metabasalt (with a Quartz or Calcite intrusion)
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Carrara Marble
Metamorphosed Limestone (principally Calcium Carbonate, CaCO3)
metamorphic
Labradorite (Feldspar)
Labradorite: (Ca,Na)(Al,Si)4O8
mineral
Garnet and Quartz
Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)
mineral
Schist
Mica Schist
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Quartz with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
mineral
Aventurine (specifically Green Aventurine)
Silicon Dioxide (Quartz) with inclusions of Fuchsite; SiO2 + K(Al,Cr)2AlSi3O10(OH)2
metamorphic
Serpentine (Lizardite)
Serpentine subgroup, Mg3Si2O5(OH)4
metamorphic
Schist
Mica Schist
metamorphic
Unakite
Epidotized Granite
metamorphic
Schist
Schist (primarily mica-schist)
metamorphic
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Mineral
Labradorite
Labradorite, (Ca, Na)(Al, Si)4O8
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Amethyst (Rose de France varieties or Amethystine Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz (Water-worn pebble/nodule)
Quartz (Silicon Dioxide - SiO2)
mineral
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Mineral (Variety of Quartz)
Gold Nugget
Native Gold (Au)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Greenstone / Serpentinite
Serpentinite (composed largely of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic