Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sandstone
Arenite
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Brecciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite)
Orbicular Quartz Diorite / Tonalite
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Petrified Wood
Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)
sedimentary
Green Aventurine in Host Rock
SiO2 (Quartz with Fuchsite inclusions)
mineral
Serpentine
Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Milky Quartz/Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Mineral
Copper Ore (Malachite and Azurite stained rock)
Cupriferous rock containing secondary copper carbonates
mineral
Leopardite
Porphyritic Quartz Monzonite or Rhyolite
igneous
Agate
Cryptocrystalline quartz, SiO2
mineral
Rose Quartz with Girasol Effect
Silicon Dioxide (SiO2)
mineral
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Milky Quartz Pebble with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Tektite
Natural impact glass
meteorite
Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Golden Healer Quartz
Silicon Dioxide (SiO2) with limonite/hematite inclusions
mineral
Obsidian
Obsidian (volcanic glass)
Igneous
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz-bearing iron-rich rock, possibly quartzite or hydrothermal breccia
Quartz (SiO₂) with iron oxides/hydroxides, likely limonite/goethite; exact host rock is uncertain from the photograph
metamorphic
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Smoky Quartz / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Chlorite inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals (hydrous magnesium iron alumino-silicate)
mineral
Turtleback Rock (Brecciated Diabase / Granite)
Brecciated hypabyssal intrusive rock
igneous
Black Jasper
Silicon dioxide (SiO2) with carbon/mineral inclusions
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Serpentine (Serpentinite)
Serpentinite (complex silicate group including lizardite, chrysotile, and antigorite)
metamorphic
Quartz with Calcite / Geode Fragment
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
mineral