Organic Gem Material (Botanical)

Polished red jasper (likely brecciated jasper)

Jasper, microcrystalline quartz/chalcedony; primarily SiO₂ with iron-oxide coloring

Gneiss (likely garnet-bearing)

Banded orthogneiss/paragneiss; chiefly quartz, feldspar, biotite and amphibole, with possible garnet

Rounded quartz-rich pebbles

Likely quartzite or quartz-rich sandstone; predominantly microcrystalline quartz (SiO₂)

Scoria

Vesicular basaltic scoria; chiefly plagioclase, pyroxene, olivine, and volcanic glass

Likely sandstone fragment

Quartz-rich sandstone, likely a friable arkose or subarkose

Tumbled cream-colored stone, likely quartzite or limestone

Probably quartzite (microcrystalline SiO₂); limestone alternative: calcite (CaCO₃)

Chlorastrolite (Greenstone)

Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O

Cut colorless gemstone, likely quartz or glass imitation

Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image

Blue sapphire (likely synthetic or treated corundum)

Corundum, aluminum oxide (Al₂O₃), blue from iron and titanium impurities

Amber

Succinite

Chert (specifically Jasper or Flint variant)

Microcrystalline Quartz (SiO2)

Likely faceted colorless gemstone

Probable quartz (rock crystal), SiO₂; diamond or topaz cannot be excluded from the photograph

Tumbled labradorite

Labradorite, a calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Polished cabochon, possibly moonstone or opal

Not identifiable from the image; possible feldspar moonstone or opal (hydrated silica, SiO₂·nH₂O)

Polished Labradorite cabochon

Labradorite, Ca( Na,Ca)(Al,Si)₄O₈; plagioclase feldspar

Possibly a polished pale-green gemstone cabochon (likely aquamarine or fluorite)

Undetermined from the image; aquamarine is blue-green beryl (Be₃Al₂Si₆O₁₈), while fluorite is CaF₂

Likely bituminous coal

Coal, predominantly carbon-rich organic matter with variable maceral and mineral content

Rough Sapphire (Corundum)

Corundum (Al2O3)

Faceted Gemstones (Mixed)

Various (e.g., Corundum, Beryl, Quartz, or synthetic equivalents)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Amethyst geode fragment

Quartz, SiO₂, purple variety colored by iron impurities

Rhodochrosite

Manganese Carbonate (MnCO3)

Green aventurine bead jewelry

Quartz (SiO₂), commonly with fuchsite or other mica inclusions

Amethyst Quartz

Silicon Dioxide (SiO2)

Pink tourmaline (likely rough crystal)

Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₄

Petrified wood

Silicified fossil wood; commonly quartz (SiO₂) replacing wood tissue

Rough Diamond

Pure Carbon (C)

Weathered quartz-rich rock, possibly quartzite or granite

Indeterminate; likely quartz–feldspar aggregate, possibly granitic gneiss or quartzite

Pink quartz-like tumbled stone (possibly dyed quartz or pink chalcedony)

Quartz, SiO₂; appearance may also fit dyed quartzite or pink chalcedony

Tanzanite earrings

Tanzanite, blue-violet zoisite (Ca₂Al₃(SiO₄)₃(OH))

Polished blue sodalite cabochons

Sodalite, Na₈Al₆Si₆O₂₄Cl₂

Petrified Wood

Silicified Wood (SiO2)

Amethyst crystal (likely quartz)

Quartz, crystalline silica (SiO₂), purple variety amethyst

Green calcite (likely)

Calcite, CaCO₃

Smoky Quartz

Silicon Dioxide (SiO₂)

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Banded agate cabochon

Microcrystalline quartz (chalcedony), SiO₂

Coquina / Limonite-stained Limestone

Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)

Blue topaz-style pendant (stone identity uncertain)

Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic

Ruby zoisite (anyolite)

Zoisite with corundum (ruby) and commonly amphibole; Ca₂Al₃(SiO₄)₃(OH)