Limestone River Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Category
Synthetic Polymer (Polylactic Acid)
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Coquina or Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Unakite (Epidotized Granite)
Epidotized Granite
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Chert (Tan/Buff variety)
Silicon Dioxide (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Onyx Marble (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Pink Calcite (Mangano Calcite)
Calcium Carbonate (CaCO3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granite cobble
Granite
igneous
Quartzite
Quartzite (Mainly SiO2)
metamorphic
Quartz (Chert/Chalcedony variant)
Silicon dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone (River Pebble)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartzite Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
sedimentary
Yellow Quartzite (River Pebble)
Quartzite (mainly SiO2)
metamorphic
Unakite
Unakite (Altered Granite consisting of Orthoclase KAlSi3O8, Epidote Ca2(Al,Fe)3(SiO4)3(OH), and Quartz SiO2)
metamorphic
Tufa (Calcareous Tufa)
Calcareous Tufa (CaCO3)
sedimentary
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
mineral
Quartzite River Stone
Quartzite (primarily SiO2)
metamorphic
Basalt (River Stone)
Basalt
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite River Rock (with Limonite staining)
Quartzite (SiO2)
metamorphic
Coquina
Bioclastic Limestone (composed primarily of Calcium Carbonate / CaCO3)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Fossiliferous Limestone (with Crinoids)
CaCO3 (Calcium Carbonate)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Blue Calcite (commonly sold as Caribbean Calcite)
Calcium Carbonate (CaCO3)
mineral
Greenstone / Glauconitic Siltstone
Metabasalt or Glauconite-rich Sedimentary Rock
metamorphic or sedimentary
Coarse-Grained Marble
Recrystallized Limestone (Major component: CaCO3)
metamorphic
Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary