Mineral (Processed Metal)

Opalite

Synthesized glass / Silicon dioxide

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Tumbled black-and-white stone, likely dendritic agate or jasper

Cryptocrystalline quartz (SiO₂), possibly chalcedony with manganese-oxide dendrites

Quartz-bearing breccia or iron-stained quartzite carving

Quartz (SiO₂) with iron-oxide/hydroxide staining, likely in a silicified breccia matrix

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Decorative polished pebbles

Likely mixed quartz-rich lithologies, including quartzite, jasper, and/or basalt

Serpentinite

Serpentinite (complex of Antigorite, Lizardite, and Chrysotile, Mg3Si2O5(OH)4)

Quartzite

Metamorphosed Sandstone (SiO2)

Tumbled red jasper

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Blue-dyed magnesite beads (often sold as “turquoise howlite”)

Magnesite, MgCO₃; commonly dyed blue and possibly marketed as dyed howlite, Ca₂B₅SiO₉(OH)₅

Ferromanganese Nodule

Polymetallic Nodule (composed primarily of MnO2 and Fe2O3)

Faceted amber-brown gemstone ring (likely citrine)

Citrine, yellow-to-brown variety of quartz (SiO₂); identification from the image is tentative

Blue Goldstone

Goldstone (artificial glass)

Cut red gemstone in a gold ring

Likely ruby (corundum, Al₂O₃), though red spinel or garnet is also possible from the image

Lepidolite

K(Li,Al)3(Al,Si,4)10(O,F,OH)2

Tumbled pale green aventurine or chalcedony

Quartz-group silica, primarily microcrystalline SiO₂; possible fuchsite-bearing aventurine

Ironstone Pebble

Sedimentary ironstone / Hematitic Sandstone

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Chalcopyrite in Quartz (Gold-bearing Ore)

CuFeS2 (Chalcopyrite)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Dyed turquoise-colored lava stone beads

Vesicular basalt (scoria), commonly sold as dyed lava rock

Granite

Intrusive Igneous Rock

Granite

Plutonic Igneous Rock

Limonite (Ochreous)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Polished blue stone, likely sodalite or dyed quartz

Possibly sodalite (Na₈Al₆Si₆O₂₄Cl₂) or artificially dyed quartz/chalcedony; image alone is inconclusive

Rose Quartz

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

Tumbled tiger’s eye

Tiger’s eye (chatoyant quartz), SiO₂, typically pseudomorphic quartz after crocidolite

Polished red jasper beads

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides

Turquoise-colored bead on a metal earring

Unidentified blue-green bead; possibly turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O), but the image cannot confirm its material

Vanadinite

Pb5(VO4)3Cl

Quartz vein in Schist

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Red garnet cabochon pendant

Likely almandine garnet, iron-rich garnet-group silicate (often approximated as Fe₃Al₂(SiO₄)₃); identification from the image is uncertain.

Granite

Intrusive Igneous Rock

Quartz Vein in Basalt or Sedimentary Host Rock

Silica-veined lithic fragment (SiO2 in host matrix)

Olivine

(Mg,Fe)2SiO4

Silver (Jewelry Specimen)

Native Silver (Chemical Formula: Ag)

Milky Quartz with Mica Matrix

SiO2 (Silicon Dioxide) with Muscovite/Biotite mica

Small metallic sulfide fragment, possibly pyrite-bearing ore

Likely pyrite (iron disulfide, FeS₂), though the image is insufficient for definitive identification

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Granite

Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase

Granite

Felsic intrusive igneous rock

Granite

Felsic intrusive igneous rock