Man Made Object (Ring)

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Mg, Fe)2SiO4 (Olivine), CaAl2Si2O8 (Plagioclase Feldspar), and Pyroxene

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Pink Satin Spar (Satin Spar Selenite Dyed)

Gypsum (CaSO4·2H2O)

Rough Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Red Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz with iron inclusions

Red Jasper (nodule)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Sandstone

Arenite (primarily SiO2)

Calcite

Calcite (CaCO3)

Sandstone (Ferruginous)

Arenite (variable SiO2 with Fe2O3 staining)

Limestone

Calcium Carbonate (CaCO3)

Schist

Mica Schist (Quartz-Muscovite-Biotite Schist)

Serpentine

Serpentine Group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Porphyritic Basalt

Basalt (with plagioclase phenocrysts)

Green Apophyllite and Stilbite on Quartz Cluster

Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)

Sandstone

Arenite (primarily SiO2)

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Galena

Lead(II) sulfide (PbS)

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Botryoidal Chalcedony

Chalcedony (SiO2)

Sandstone (Pebble/Cobble)

Arenite (primarily SiO2)

Smoky Quartz

Silicon Dioxide (SiO₂)

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Porphyritic Basalt (with Lath-like Phenocrysts)

Porphyritic Basalt

Plagioclase Feldspar

Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)

Fossiliferous Limestone

CaCO3 (principally Calcite or Aragonite)

Fluorite (specifically Rainbow Fluorite or Purple Fluorite)

Calcium Fluoride (CaF2)

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Limonite (Iron Stone Concretion)

Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Ironstone Concretion / Limonite Node

Ferruginous Sedimentary Rock (composed primarily of Limonite FeO(OH)·nH2O and Goethite)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Red Jasper (River Pebble)

Jasper (Silicon Dioxide, SiO2)

Fluorite

Calcium Fluoride (CaF2)

Red Quartzite River Pebble

Quartzite (SiO2 with iron oxide inclusions)

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Marble

Metamorphosed Limestone (calcite formulation CaCO3)

Blue Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Burmese Jadeite (Water Jade)

Jadeite (NaAlSi2O6)

Sandstone (Red Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)

Sandstone (Yellow/Tan)

Clastic sedimentary rock (primarily SiO2 with iron oxide staining)