Sedimentary (If Limestone) Or Metamorphic (If Marble)

Lapis Lazuli

Lapis lazuli (main components: Lazurite, Calcite, Pyrite)

Lapis Lazuli

Lazurite-rich metamorphic rock (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Zebra Marble

Recrystallized Calcite (CaCO3) with Carbonaceous Impurities

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Quartzite pebble

Quartzite (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

White tumbled stone, likely quartz or calcite

Indeterminate; possibly quartz (SiO₂) or calcite (CaCO₃)

Calcite

Calcium Carbonate (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Yellow calcite (rough crystal)

Calcite, CaCO₃

Black Marble

Recrystallized Calcite (CaCO3)

Lapis Lazuli

Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Calcite Cluster

Calcium Carbonate (CaCO3)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Weathered limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous

Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Likely weathered limestone or marble fragment

Calcite-rich carbonate rock; likely calcitic marble (CaCO₃), though limestone is also possible

Ruby / Red Corundum

Al2O3 (Aluminum Oxide with Chromium trace)

Weathered limestone

Calcite-rich carbonate rock (mostly CaCO₃)

Weathered limestone

Calcite-rich carbonate rock (primarily CaCO₃)

Possible calcite crystal fragment

Calcite (CaCO₃), tentative identification

Likely weathered limestone

Calcite-rich carbonate rock; primarily calcium carbonate (CaCO₃)

Tumbled limestone or calcitic rock

Limestone, predominantly calcite (CaCO₃)

Lapis Lazuli (Low Grade)

Lapis Lazuli (Metamorphic rock containing lazurite, calcite, and pyrite)

Likely calcite-rich marble

Calcite (CaCO₃), recrystallized as marble; minor impurities may include mica or quartz

Lapis Lazuli

Lapis Lazuli (Complex metamorphic rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Honey calcite (rough crystal fragment)

Calcite, CaCO₃

White quartz-rich stone (possibly marble)

Likely calcite marble (recrystallized CaCO₃); exact identification is uncertain from the image

White marble chips

Marble; predominantly calcite (CaCO₃)

Porous limestone (likely coral limestone)

Calcite-rich carbonate rock; primarily calcium carbonate, CaCO₃

Weathered limestone pebble

Limestone; predominantly calcite (CaCO₃)

Polished fossiliferous limestone, likely fossil shell fragment

Calcite-rich limestone (CaCO₃), possibly bioclastic/coquina limestone

White Marble

Recrystallized Calcite (CaCO3)

Polished white-and-black stone, likely quartzite or marble

Quartz-rich quartzite or calcitic marble; exact identification requires testing

Chalky limestone

Micritic calcite limestone; predominantly CaCO₃

Lapis Lazuli

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

Lapis Lazuli

Lapis Lazuli (Complex silicate mixture including Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Lapis Lazuli

Lazurite-rich metamorphic rock (complex silicate)

Lapis Lazuli (Low-grade/Calcite-heavy)

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