Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (predominantly Lazurite)
metamorphic
Carnelian (Flame Polished)
Carnelian (SiO2 with Iron Oxide impurities)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Schist
Mica Schist
metamorphic
Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Labradorite (Dark or Black variety)
Labradorite (member of Plagioclase Feldspar group), (Na,Ca)(Si,Al)4O8
mineral
Satin Spar (Selenite Gypsum Sphere)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Rainbow Moonstone with Black Tourmaline
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
metamorphic
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Mineral
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
mineral
Malachite
Copper(II) carbonate hydroxide [Cu2CO3(OH)2]
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Specular Hematite
Hematite (Iron Oxide, Fe2O3)
mineral
Red Quartzite
Quartzite (SiO2)
metamorphic
Chert (Polished River Pebble)
Chert (SiO2)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Brown Agate
Silicon Dioxide (SiO2)
sedimentary
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Unakite
Epidotized Granite
metamorphic
Quartz Pebble
Silicon dioxide (SiO2)
mineral
Pumice
Pumice (a highly vesicular volcanic rock)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Gneiss
Gneiss
metamorphic
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Basalt with Iron Oxidation
Amygdaloidal Basalt (silicate rock primarily plagioclase, pyroxene, and olivine)
igneous
Chert (Jasper)
Silicon dioxide (SiO2)
sedimentary
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Granitoid Pebble (Graphic Granite/Pegmatite)
Pegmatitic Granite with Quartz and Orthoclase
igneous
Agate
Chalcedony (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
mineral
Unakite
Unakite (altered granite)
metamorphic
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral