Organic Material (Likely A Fruit Or Berry)

Yellow jasper (likely iron-stained chert or quartzite)

Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides

Moss agate bracelet

Chalcedony (microcrystalline quartz, SiO₂) with chlorite/amphibole inclusions

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz

Amber

Succinite (C10H16O)

Quartz-rich metamorphic pebble, possibly jade-like greenstone

Likely quartzite or altered basalt/greenstone; visible minerals may include quartz, feldspar, chlorite/epidote, and iron oxides

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material

Fossil brachiopod or bivalve shell

Likely a fossilized brachiopod; precise genus cannot be determined from the photograph

Polished dendritic jasper or agate slab

Microcrystalline quartz (SiO₂), likely jasper with chalcedony and iron/manganese dendrites

River Pebble (likely Quartzite or Siltstone)

Sedimentary Clast (SiO2 based)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond

Anthracite Coal

Anthracite

River Pebble (Likely Quartzite or Chalcedony)

Silicon Dioxide (SiO2) - granular metamorphic variety

Weathered basalt or other dark volcanic rock

Likely basalt; predominantly plagioclase feldspar and pyroxene, possibly olivine and iron oxides

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Honey-colored chalcedony (rough agate/chert)

Microcrystalline quartz, SiO₂; likely chalcedony with iron-oxide staining

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Tumbled pink-and-white quartz

Quartz, silicon dioxide (SiO₂), likely rose quartz mixed with milky quartz

Quartz-bearing rock fragment

Likely quartz (SiO₂) with iron-oxide staining and possible host-rock grains

Weathered quartz-rich rock, possibly sandstone or quartzite

Likely quartzite (mostly SiO₂), though a granular sandstone is also possible

Tumbled brown agate or jasper

Microcrystalline quartz, SiO₂ (likely chalcedony/agate with iron oxides)

Unidentified gray stone

Likely quartz-rich stone; exact identification is not possible from the image

Rough turquoise-bearing rock (probable turquoise matrix)

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a host-rock matrix

Weathered basaltic rock fragment

Basalt, likely porphyritic or amygdaloidal basalt with weathered iron-oxide-rich zones

Yellow-green jasper or serpentine-rich rock

Likely microcrystalline quartz (SiO₂) with iron-bearing and/or serpentine minerals; exact identification requires testing

Uncertain polymict breccia or altered volcanic rock

Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing

Tumbled amber-colored chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Botryoidal hematite/goethite specimen

Hematite (Fe₂O₃), likely mixed with goethite (FeO(OH))

Iron-rich meteorite candidate

Undetermined meteoritic iron–nickel material; possibly an ordinary chondrite or weathered iron meteorite

Coal (most likely Bituminous or Anthracite)

Coal (primarily composed of carbon with varying amounts of other elements)

Chert (varietal: Jasper or Flint likely, but definitive identification is difficult from image)

SiO₂ (silicon dioxide)

Waterworn greenstone pebble

Likely serpentinite or chlorite-rich metamorphic rock; exact identification requires testing

Olivine (likely Peridot variety)

Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4

Sandstone

Arenite (a specific type of sandstone with less than 15% matrix)

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)

Tumbled turquoise-like stone

Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Yellow quartz, possibly citrine

Quartz (SiO₂), yellow variety likely citrine; may also be iron-stained quartz

Polished opal-like chalcedony

Cryptocrystalline silica, SiO₂; likely common opal or pale chalcedony, with identification limited by the photograph

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Fossil shell fragment

Likely a fossilized brachiopod or bivalve; exact taxon cannot be determined from the image

Possible iron-rich basalt or industrial slag

Basalt, likely Fe–Mg silicate rock; exact identification is uncertain from the blurred image