Mineral (Silicate Replaced Organic Material)

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Milky Quartz (Water-worn Pebble)

Silicon Dioxide (SiO2)

Larimar

Pectolite [NaCa2Si3O8(OH)] with copper substitution

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Dream Amethyst (Chevron Amethyst)

Silicon Dioxide with inclusions (SiO2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Shale

Fissile Mudstone (primarily composed of clay minerals and quartz)

Limonite (Iron Ore/Sandstone mixture)

Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Na8[AlSi O4]6[S,Cl,SO4,OH]2)

Granite Cobble

Phaneritic Felsic Igneous Rock

Lapis Lazuli (Low Grade)

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

Glauconitic Sandstone

Glauconitic Quartz-Wacke / Sandstone (Fe(II),Fe(III),Al,Mg)2-3(Si,Al)4O10(OH)2

Labradorite (a variety of Anorthosite or Plagioclase)

Labradorite (member of Plagioclase Feldspar series), (Ca,Na)(Al,Si)4O8

Granodiorite

Granodiorite (Na,Ca)(Al,Si)4O8

Quartz

Quartz (SiO2, Silicon Dioxide)

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite and Quartz inclusions

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Granite

Phaneritic Felsic Igneous Rock (Granite)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Fulgurite

Fulgurite (Lechatelierite), amorphous SiO2

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Chert (Commonly known as Flint)

Microcrystalline Quartz (SiO2)

Granodiorite

Granodiorite (Na,Ca)(Si,Al)4O8

Rough Diamond

Diamond (Pure Carbon: C)

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Ferruginous Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Dinosaur Bone (Gembone)

Petrified Dinosaur Bone (Apatite/Silica replacement)

Pyrite

Iron Sulfide (FeS2)

Diamond

Carbon (C)

Bauxite / Iron-rich Laterite

Laterite (principally Al(OH)3, Fe2O3, and SiO2)

Gneiss

Gneiss (Metamorphic high-grade)

Ironstone with Limonite/Goethite coating

Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)

Banded Gneiss (with Quartz Vein)

Gneiss (Metamorphic rock of varying mineralogy)

Chert (varietal Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide (Fe2O3) cement

Granite (Pink/Red variety)

Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

Quartzite

Quartzite (Primary mineral: SiO2)