Sedimentary (If Limestone) Or Metamorphic (If Marble)

Lapis Lazuli

Lazurite-rich metamorphic rock

Ruby (set in a gold pendant)

Ruby (Variety of Corundum, Al2O3)

Lapis Lazuli

Lapis Lazuli (Metamorphic Rock containing Lazurite, Calcite, Pyrite, and Sodalite)

Lapis Lazuli

Lapis Lazuli (Complex aggregate containing Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

White Marble (Whiskey Stone)

Recrystallized Calcite / Marble (CaCO3)

Seashell Fragment (Aragonite/Calcite)

Calcium Carbonate (CaCO3) - Shell fragment

Blue-gray limestone or marble fragment

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

Orange Calcite

Calcium Carbonate (CaCO3)

Optical Calcite

Calcite (Calcium Carbonate, CaCO3)

Honey Calcite

Calcium Carbonate (CaCO3)

Quartzite on Matrix

Crystalline Silicon Dioxide (SiO2) within metamorphic matrix

Optical Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Cleavage Rhomb)

Calcite (Calcium Carbonate, CaCO3)

Lapis Lazuli

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

Clear calcite cleavage fragment

Calcite (calcium carbonate, CaCO₃)

Small pale mineral fragment, likely quartz or calcite

Quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Fossiliferous Limestone (Red Marble)

Bioclastic Limestone (CaCO3)

White Calcite (Dogtooth Spar or Crystalline Calcite)

Calcite (Calcium Carbonate, CaCO3)

Honey Calcite

Calcite (CaCO3)

Lapis Lazuli (in Matrix)

Na8[Al6Si6O24]S2 (Lazurite as the primary component)

Connemara Marble

Calcitic Marble / Serpentinite composite

Orange Calcite

Calcium Carbonate (CaCO3)

Carrara Marble

Recrystallized Calcite (CaCO3)

Tumbled cream-colored stone, likely calcite or marble

Calcite (CaCO₃), possibly recrystallized as marble

Calcite

Calcium Carbonate (CaCO3)

Carrara Marble

Metamorphosed Limestone (principally Calcium Carbonate, CaCO3)

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

Lapis Lazuli

Lapis lazuli (primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

White tumbled stone, likely quartz or calcite

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

Likely weathered limestone or marble fragment

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

Calcite

Calcium Carbonate (CaCO3)

Quartzite pebble

Quartzite (SiO2)

Weathered limestone fragment

Calcite-rich limestone (CaCO₃), possibly chalky or fossiliferous limestone

Lapis Lazuli

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

Lapis Lazuli (Carved)

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

Ruby / Red Corundum

Al2O3 (Aluminum Oxide with Chromium trace)

Blue Calcite

Calcium Carbonate (CaCO3)

Calcite (Optical or Clear Calcite)

Calcium Carbonate (CaCO3)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Blue Apatite

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