Metamorphic (Localized) Or Sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Leopard Skin Jasper

Silicon Dioxide (SiO2) with iron and manganese inclusions

Hag Stone

Perforated Calcarenite or Chert

Polished green serpentine (likely bowenite)

Serpentine-group minerals, chiefly antigorite/lizardite; bowenite is a compact Mg-rich variety often called “serpentine jade”

Chert Breccia (Yellow Jasper)

Silicon Dioxide (SiO2) - Brecciated Chert

Banded Agate

Silicon dioxide (SiO2) - variety of Chalcedony

Larimar and Fossil Coral

Pectolite (NaCa2Si3O8(OH)) and Hexagonaria/Petoskey Stone

Serpentinite (likely antigorite-rich)

Serpentinite; hydrated Mg-rich silicate minerals, chiefly antigorite (Mg3Si2O5(OH)4), with possible chrysotile/lizardite and magnetite

Sedimentary Outcrop (Sandstone/Shale)

Sedimentary bedrock formation (variable composition)

Limonite Concretion

Limonite (FeO(OH)·nH2O)

Gossanous Sandstone (likely Terrestrial)

Arenite with Iron-Oxide inclusions

Ironstone Concretion (Coprolite-like)

Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))

Gowganda Tillite (Puddingstone)

Glacial Tillite (Diamictite) with Jasper inclusions

Red Jasper

Jasper (Silica with Hematite inclusions), SiO2

Calcite-rich limestone with iron-oxide staining and a possible concretion

Calcite (CaCO₃) in micritic limestone; brown coating likely goethite/limonite

Polished banded jasper (likely ocean jasper or brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron oxides and assorted silicate inclusions

Yellow Ocherous Siltstone (Limonitic Shale)

Limonitic Siltstone / Goethite-rich Sedimentary Rock

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Sandstone) with Iron Oxide (Fe2O3)

Rounded sandstone pebble

Quartz-rich sandstone, possibly iron-stained litharenite

Pyrite

Iron Sulfide (FeS2)

Sandstone Clast

Arenite (primarily SiO2)

Sandstone Concretion with Quartz Center

Sedimentary Clastic Rock (SiO2 matrix with Quartz core)

Greenish quartz (likely prase/chalcedony)

Quartz, SiO₂; possibly green chalcedony or chlorite-included quartz

Painted Garden Rock (likely Granite or Limestone base)

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments

Poppy Jasper

Jasper (variety of Chalcedony), SiO2 (Silicon Dioxide)

Limonite / Brown Iron Ore

Hydrous Iron Oxide (FeO(OH)·nH2O)

Weathered iron-rich sandstone or ferruginous conglomeratic rock

Ferruginous sandstone, likely hematite/goethite-bearing quartz sandstone

Fossil bivalve shell

Fossilized or calcitic bivalve, likely a scallop-type pectinid (Bivalvia: Pectinidae)

Chert (Hagstone/Gasket Rock variant)

Chert (SiO2)

Red Sandstone with Reduction Spot

Quartzose Sandstone with a Leach/Reduction Spot

Wishing Stone (Basalt or Chert with Quartz Veins)

Basalt or microcrystalline Quartz (Chert) with localized hydrothermal Quartz (SiO2) veining

Quartz geode or vuggy quartz vein fragment

Quartz (SiO₂), likely with minor iron oxides and host carbonate or silicate minerals

Banded gneiss

Gneiss, likely quartz–feldspar–mica gneiss

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Apatite

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

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Zoisite with Hornblende

Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Milky quartz

Quartz (silicon dioxide, SiO₂)