Uncertain

Milky quartz vein material

Quartz, silicon dioxide (SiO₂), likely massive vein quartz

Green serpentine (likely rough serpentine)

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; composition approximately Mg₃Si₂O₅(OH)₄

Serpentinite (probable)

Serpentinite, a rock composed chiefly of serpentine-group minerals such as antigorite, lizardite, or chrysotile

Likely slate

Slate, a fine-grained metamorphic rock composed mainly of quartz, mica (sericite/muscovite), and chlorite

Pale green calcite

Calcite (CaCO₃)

Druzy amethyst (likely)

Quartz, SiO₂, with purple coloration from trace iron and irradiation

Polished amber (possibly imitation or treated amber)

Amber—fossilized tree resin; mostly polymerized terpenoid compounds (not a mineral)

Chrysoprase-like green chalcedony (tentative)

Microcrystalline quartz, SiO₂, likely nickel-colored chalcedony; associated brown iron oxides

Weathered brown rock fragment

Indeterminate; possibly ferruginous sandstone or weathered volcanic rock

Mica-rich pegmatite (likely muscovite-bearing)

Granitic pegmatite composed mainly of quartz, feldspar, and mica; mica is likely muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Milky quartz (possible pale green quartz)

Quartz, silicon dioxide (SiO₂)

Granite (likely weathered granite or granitic gneiss)

Granite; chiefly quartz (SiO₂), feldspar, and mica

Tumbled jasper, likely ocean jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral inclusions

Fossilized tooth or tooth fragment

Indeterminate vertebrate tooth; possibly a fossil shark tooth (Carcharodon/Carcharocles)

Diamond ring

Diamond (crystalline carbon, C) set in a metal ring; the small stones appear diamond-like but cannot be confirmed from the image.

Tumbled carnelian (likely)

Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Red-orange sunstone (likely aventurine feldspar) bead bracelet

Feldspar, commonly oligoclase or labradorite with copper inclusions; composition varies by source

Carved and polished brown agate pendant

Agate, a microcrystalline variety of quartz (SiO₂), likely chalcedony

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz (SiO₂)

Polished granite (likely gneissic or migmatitic granite)

Granite, a quartz–feldspar plutonic rock; exact variety cannot be determined from the image

Tumbled jasper (likely iron-stained chalcedony)

Microcrystalline quartz, SiO₂; jasper is an opaque variety of chalcedony

Rough turquoise

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Tumbled honey-colored chalcedony (likely carnelian or orange agate)

Microcrystalline quartz, SiO₂ (chalcedony); exact variety cannot be confirmed from the image

Tumbled, iron-stained quartz-rich pebble

Likely quartz/chalcedony with iron-oxide staining; exact rock type cannot be determined from the image

Blue kyanite

Kyanite (Al₂SiO₅)

Calcite crystal cluster

Calcite (CaCO₃)

Dark green cabochon gemstone ring

Unknown; possibly green onyx (cryptocrystalline quartz, SiO₂) or another green gem

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Tumbled dark green stone, likely serpentine or greenstone

Serpentinite (hydrated magnesium silicate minerals, chiefly antigorite/lizardite); possible chlorite-rich greenstone

Tumbled carnelian/chalcedony

Cryptocrystalline quartz, SiO₂ (iron-bearing chalcedony)

Polished red jasper

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

Fossil shell fragment

Likely a bivalve shell fossil; exact taxon is not identifiable from the image

Rounded quartz-rich pebble, likely quartzite

Quartzite (predominantly silicon dioxide, SiO₂)

Weathered granite pebble

Granite, a coarse-grained rock composed mainly of quartz, feldspar, and mica

Smoky quartz ring

Quartz, SiO₂ (likely smoky quartz)

Mica-rich schist (tentative)

Mica schist, likely muscovite–biotite schist; exact minerals cannot be confirmed from the image

Likely polished labradorite (small tumbled stone)

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

Quartz-rich rock, possibly a weathered quartz vein specimen

Predominantly quartz (SiO₂); exact rock type cannot be determined from the image

Yellow calcite (tumbled)

Calcite, CaCO₃

Pink feldspar (likely potassium feldspar)

Orthoclase or microcline, KAlSi₃O₈

Polished yellow-green agate

Chalcedony, microcrystalline quartz (SiO₂), likely banded agate