Turquoise (Green variety)
Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Category
Mineral (Variety Of Chalcedony)
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
mineral
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Amethyst (variety of Quartz)
SiO2 (Silicon Dioxide) with trace iron impurities
Mineral
Sunstone (variety of Feldspar)
Oligoclase Sunstone, Plagioclase Feldspar (Na,Ca)Al(Si,Al)Si2O8
Mineral
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
![Amethyst (Quartz variety) (Amethyst [Silicon Dioxide (SiO2)]) — mineral](https://media.rockidentification.com/b9cee378-cbe9-4518-8022-2ff4232730ab-thumbnail.jpg)
Amethyst (Quartz variety)
Amethyst [Silicon Dioxide (SiO2)]
mineral
Amethyst (Variety of Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Satin Spar (often marketed as Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
igneous
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Common Opal (Green Opal / Pistachio Opal)
Hydrated silica (SiO2·nH2O)
mineraloid
Moonstone (Variety of Orthoclase Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)
igneous
Jasper (Iron Oxide Rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Goethite) inclusions
sedimentary
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
metamorphic
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Obsidian
Obsidian (Volcanic Glass)
igneous
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)
mineral
Dalmatian Stone
Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)
igneous
Garnet (Almandine or Spessartine likely)
Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)
Mineral
Mookaite Jasper
Radiolarite (Chert/Jasper variety), formula SiO2
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Quartz (milky quartz variety)
Quartz (SiO₂)
Mineral
Blue Tiger's Eye
Silicon Dioxide (SiO2) with Crocidolite inclusions
Mineral (Pseudomorph)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Milky Quartz with Epidote or Chlorite inclusions
Silicon Dioxide (SiO2) with inclusions of Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Greenstone
Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote
metamorphic
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Quartz
mineral