Mineral Side Rock

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Limonite with Opal infusion

FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Basalt with Vesicles

Vesicular Basalt (comprising Plagioclase Feldspar, Pyroxene, and Olivine)

Sandstone (likely Arkose)

Arenite (composed mainly of SiO2 with Feldspar)

Blue Apatite

Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]

Quartz Vein in Rhyolite

Silicon Dioxide (SiO2) in extrusive igneous rock

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Banded Calcite (often sold as 'Travertine' or 'Mexican Onyx')

Calcium Carbonate (CaCO3)

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock including secondary mineral infills)

Quartz Vein in Host Rock

Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Sandstone (Stream-rounded)

Arenite (SiO2 based)

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone

Arenite (SiO2 based)

Ferruginous Sandstone (with possible Epidote/Chlorite coloring)

Sandstone (SiO2 dominated with Fe2O3 staining)

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Basalt (River Rock/Cobble)

Basalt (no specific mineral formula as it's a rock)

Sandstone (Stream Pebble)

Arenite (primarily SiO2)

Lapis Lazuli

Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Lapis Lazuli

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

Ferruginous Sandstone (Red Sandstone)

Arenite with Hematite/Limonite cement

Quartz (Milky Quartz vein fragment)

Silicon Dioxide (SiO2)

Obsidian

Volcanic Glass (SiO2)

Schist

Mica Schist

Quartz Vein in Host Rock (Gabbro or Basalt)

Silicon Dioxide (SiO2) with Mafic Silicates

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Agate

Silicon Dioxide (SiO2)

Yellow Quartz or Citrine Geode/Cluster

Silicon Dioxide (SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Basalt with Quartz Vein

Aphanitic Mafic Igneous Rock with Silicon Dioxide (SiO2) intrusion

Sandstone

Arenite (mostly Quartz-based)

Shale

Shale (Sedimentary rock composed of mud/clay minerals)