Sedimentary (If Limestone) Or Metamorphic (If Marble)

Lapis Lazuli

Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)

Honey calcite (calcareous mineral specimen)

Calcite, CaCO₃; likely honey/yellow calcite with minor iron-oxide staining

Calcite

Calcite (CaCO3)

Clear calcite (optical calcite)

Calcite, CaCO₃

Banded Calcite (Honey Calcite)

Calcium Carbonate (CaCO3)

Honey calcite (rough fragment)

Calcite, CaCO₃

White Quartzite

Quartzite (primarily SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Black Limestone with Calcite Veining

Limestone (CaCO3) with Calcite (CaCO3) inclusions

Polished/tumbled banded marble or calc-silicate rock

Foliated calcitic marble, possibly serpentinite-bearing; primarily calcite (CaCO₃) with gray silicate minerals

Green Calcite (Onyx Marble)

Carbonate mineral (Calcium Carbonate, CaCO3)

Honey Calcite

Calcium Carbonate (CaCO3)

Chert (or potentially massive Quartz/Quartzite)

SiO2 (Silicon Dioxide)

Light-colored limestone pebble

Calcite-rich limestone (primarily CaCO₃)

Yellow calcite (likely honey calcite)

Calcite, CaCO₃

Polished brecciated red marble

Calcite marble (brecciated, vein-filled carbonate rock; predominantly CaCO₃)

Calcite crystal

Calcite, CaCO₃

Yellow calcite (rough crystal)

Calcite, CaCO₃

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite (Gold/Yellow)

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Orange Calcite

Calcium Carbonate (CaCO3)

Fossiliferous limestone

Bioclastic limestone, chiefly calcite (CaCO₃), with fossil shell or coral fragments

Lapis Lazuli

Lapis Lazuli (Complex rock primarily composed of Lazurite (Na,Ca)8[(SO4,S,Cl)2|(AlSiO4)6], Calcite, and Pyrite)

Lapis Lazuli

Lapis Lazuli (Aggregate primarily of Lazurite: (Na,Ca)8(AlSiO4)6(S,SO4,Cl,1-2) with Calcite and Pyrite)

Lapis Lazuli (Raw Ore)

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite component)

Lapis Lazuli

Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])

Weathered limestone cobble

Limestone, primarily calcite (CaCO₃), possibly fossiliferous or micritic

Banded calcite (likely cave deposit or vein fragment)

Calcite, CaCO₃

Magnetite

Magnetite (Fe3O4)

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Tumbled calcite (likely honey/orange calcite)

Calcite — calcium carbonate, CaCO₃

Honey Calcite

Calcite (Calcium Carbonate, CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Blue Calcite

Calcium Carbonate (CaCO3)

Calcite crystal cluster

Calcite (CaCO₃)

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartzite

Quartzite (primarily SiO2)

Calcite (honey calcite)

Calcite, calcium carbonate (CaCO₃)