Turritella Agate (Fossiliferous Chert)
Silicified Elimia tenera (Fossiliferous Chalcedony)
sedimentary
Orange Calcite (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
mineral
Yooperlite (Syenite clasts with Sodalite)
Fluorescent Sodalite-bearing Syenite
igneous
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
metamorphic
Arfvedsonite with Garnet
Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2
igneous
Eudialyte in Matrix
Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3
mineral
Ruby in Fuchsite
Corundum (Al2O3) in Chrome-Mica (KAl2(AlSi3O10)(OH)2)
metamorphic
Blue Chalcedony (Blue Lace Agate variety)
Silicon Dioxide (SiO₂)
mineral
Caribbean Calcite
Calcite and Aragonite (CaCO3)
mineral
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Bumblebee Jasper
Calcite-bearing Volcanic Tuff containing Sulfur and Arsenic (Orpiment/Realgar)
sedimentary
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Agate (Lace Agate Geode Slice)
Silicon Dioxide (SiO2)
mineral
Rainbow Moonstone with Black Tourmaline
White Labradorite with Schorl (Na,Ca)(Al,Si)4O8
mineral
Tree Agate
Silica (SiO2) with Chlorite inclusions
mineral
Septarian Nodule (Dragon Stone)
Septarian Geode (CaCO3 + Mg + Fe)
sedimentary
Pietersite
Brecciated Chatoyant Tiger's Eye (SiO2)
mineral
Septarian Nodule (Septaria)
Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)
sedimentary
Ocean Jasper (Orbicular Jasper)
Orbicular Rhyolite (SiO2)
igneous
Blue Aventurine
Quartzite with Dumortierite inclusions (SiO2 + Al7(BO3)(SiO4)3O3)
metamorphic
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
mineral
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Ruby in Fuchsite (often confused with Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)
metamorphic
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2 + Manganese/Iron oxides)
mineral
Ocean Jasper
Orbicular Jasper (variety of Chalcedony/Quartz, SiO2)
sedimentary
Banded Calcite (often sold as Caribbean Calcite or Pink Calcite)
Calcium Carbonate (CaCO3)
mineral
Que Sera Stone (Llanite)
Rhyolite Porphyry with Blue Quartz and Feldspar
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite (Polished Crystal Point)
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
mineral
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Yooperlite (Sodalite-bearing Syenite)
Sodalite-rich Syenite (Na8(Al6Si6O24)Cl2)
igneous
Lepidolite in Quartz (Obelisk)
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite)
metamorphic
Red Aventurine
Aventurine Quartz (SiO2 + Hematite/Goethite)
metamorphic
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Mahogany Obsidian
Volcanic Glass (predominantly SiO2 with inclusions of Hematite or Magnetite)
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Amazonite
Microcline (KAlSi3O8) with trace lead (Pb) impurities
mineral
Banded Calcite (often sold as Orange Onyx or Mexican Onyx)
Calcium Carbonate (CaCO3)
sedimentary
Septarian Nodule (Dragon Stone)
Septarian Nodule (containing Calcite, Aragonite, and Limestone/Clay)
sedimentary
Banded Agate
Cryptocrystalline Silica (SiO2)
mineral
Zebra Jasper
Tetragonal Silicon Dioxide (Quartz) with impurities
sedimentary