Diamond
Carbon (C)
mineral
Category
Minerals
Browse minerals specimens identified by the Rock Identifier community.
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Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Quartz (Iron-Stained or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Diamond
Diamond (C)
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Kimberlite with Diamond
Kimberlite (Porphyritic Peridotite)
igneous
Diorite (River Pebble)
Intermediate plutonic igneous rock
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Pink Granite
Phaneritic plutonic rock (dominated by Alkali Feldspar)
igneous
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Black Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Granite Gneiss
Gneiss (High-grade metamorphic rock formed from granitic precursor)
metamorphic
Banded Sandstone (Hag Stone)
Arenite Sandstone (SiO2 with impurities)
sedimentary
Diamond
Carbon (C) - Native Element
mineral
Diorite (Polished Cobble)
Diorite (Intermediate intrusive igneous rock)
Igneous
Sulfur (with possible Cullet Glass or Slag imitation)
Native Sulfur (S8)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Lizardite, Chrysotile, Antigorite)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
igneous
Schist (Diamond Drill Core)
Mica Schist
metamorphic
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
mineral
Granite
Granitoid
igneous
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Granitic Pegmatite with Tourmaline
Granite (Feldspar/Quartz matrix) with Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Schist (metamorphic rock)
metamorphic
Gneiss (Schistose)
Gneiss
metamorphic
Tiger Shark Fossil Tooth
Galeocerdo cuvier (fossilized)
sedimentary
Magnetite / Ironstone Pebble
Magnetite (Fe3O4)
mineral
Malachite
Copper Carbonate Hydroxide (Cu2CO3(OH)2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Sedimentary rock
Garden Quartz (Lodalite)
Silicon Dioxide with various mineral inclusions (SiO2)
mineral
River Stone (composed of Siltstone/Basalt mixture)
Siltstone or microcrystalline Basalt pebble
sedimentary
Limonite (Iron Ore)
Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)
mineral
Gneiss (Granite Gneiss)
Gneiss
metamorphic
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Basalt with Secondary Mineralization (Likely Zeolites or Calcite)
Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)
igneous
Hemimorphite on Limonite Gossan
Hemimorphite (Zn4Si2O7(OH)2·H2O) on Limonite matrix
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite
Granite (a felsic intrusive igneous rock)
Igneous rock
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
igneous and metamorphic