Sedimentary (If Limestone) Or Metamorphic (If Marble)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Optical Calcite

CaCO3 (Calcium Carbonate)

Sapphire

Corundum (Al2O3)

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite

Calcium Carbonate (CaCO3)

Banded Calcite (often sold as 'Ocean Jasper' or 'Caribbean Calcite' variant)

Calcium Carbonate (CaCO3) with potential Aragonite inclusions

Rough green calcite

Calcite, CaCO₃

Lapis Lazuli

Lazurite (primary mineral component), (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Lapis Lazuli

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

Quartzite

Quartzite (primarily SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Weathered fossiliferous limestone

Bioclastic limestone, primarily calcite (CaCO₃)

Orange Calcite (Carved as a Horned Skull)

Calcium Carbonate (CaCO3)

Quartzite Pebble

Quartzite (SiO2)

Quartzite

Quartzite (chiefly SiO2)

Honey calcite crystal

Calcite, calcium carbonate (CaCO₃)

Tumbled orange calcite

Calcite (CaCO₃), likely orange/honey calcite

Quartzite

Quartzite (principally SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Pebble

Meta-quartzite

Quartzite (Potentially Ferruginous)

Quartzite (SiO2)

Quartzite

Metamorphosed Sandstone (SiO2)

Crinoid Marble (Fossilized Limestone)

Crinoidal Limestone (comprising Calcite/Aragonite CaCO3)

Calcite

Calcite (CaCO 3)

Jasper

SiO2

Yellow calcite (likely honey calcite)

Calcite, calcium carbonate (CaCO₃)

Black-and-white veined stone, likely marble or calcite-veined metamorphic rock

Probable calcite marble: predominantly recrystallized calcite (CaCO₃) with dark graphite-, mica-, or amphibole-rich minerals

Lapis lazuli

Lazurite-bearing marble; primarily lazurite (Na₃Ca(Si₃Al₃)O₁₂S) with calcite and pyrite

Tumbled honey calcite

Calcite (calcium carbonate, CaCO₃)

Tumbled yellow calcite

Calcite (calcium carbonate, CaCO₃)

Pale green calcite crystal

Calcite (CaCO₃), likely a translucent cleavage fragment

Fluorescent calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Tumbled honey calcite

Calcite (CaCO₃)

Blue Calcite

Calcium Carbonate (CaCO3)

Pink Quartzite

Quartzite (primarily SiO2 with trace impurities of iron oxides)

Calcite

Calcite (CaCO3)

Banded Calcite (Tumbled)

Calcium Carbonate (CaCO3)