Uncertain

Quartz-rich metamorphic rock (likely quartzite)

Quartzite, composed predominantly of quartz (SiO₂)

Carnelian (likely)

Orange chalcedony, a microcrystalline variety of quartz (SiO₂)

Clear quartz (rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Tumbled hematite (speculative identification)

Hematite, α-Fe₂O₃

Purple fluorite in matrix

Fluorite (CaF₂), likely embedded in a carbonate-rich host rock

Smoky quartz ring

Quartz (SiO₂), likely smoky quartz; the surrounding stones and metal cannot be identified reliably from the image.

Greenstone (likely chlorite-rich metamorphic rock)

Greenschist; commonly composed of chlorite, actinolite, and epidote, with possible albite

Tumbled red jasper

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

Likely rose quartz

Quartz (SiO₂), probably massive rose quartz

Tumbled brown quartz (likely iron-stained quartzite or chalcedony)

Quartz, SiO₂; possibly microcrystalline quartz (chalcedony)

Clear quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

Green jade bangle

Jadeite (NaAlSi₂O₆) or nephrite, a tremolite–actinolite amphibole

Tumbled blue stone, likely blue aventurine or dyed quartz

Quartz (SiO₂), possibly with fuchsite inclusions; exact identification requires testing

Fossilized shell or coral fragment

Indeterminate marine mollusk or colonial coral fossil; likely calcite/aragonite replaced by calcite (CaCO₃)

White marble (likely calcite marble)

Calcite marble; predominantly calcite (CaCO₃)

Porphyritic basalt

Basalt, likely plagioclase- and pyroxene-bearing

Milky quartz

Quartz (silicon dioxide, SiO₂)

Polished agate (likely moss or plume agate)

Microcrystalline quartz, SiO₂; chalcedony with brown iron-oxide inclusions

Likely blue-gray fluorite

Fluorite (calcium fluoride, CaF₂)

Peach/pink calcite

Calcite (calcium carbonate, CaCO₃)

Tumbled orange aventurine (likely orange quartzite)

Quartz-rich quartzite, mainly SiO₂; orange color likely from iron-oxide inclusions

Presumed K2 granite (K2 stone)

K2 granite, an altered granitic rock composed mainly of quartz, feldspar, and white mica, with blue azurite spots

Likely granite

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

Polished banded malachite

Malachite, Cu₂CO₃(OH)₂

Weathered granite (probable)

Granite; chiefly quartz, feldspar, and minor mica

Tumbled brown translucent mineral fragment

Indeterminate; possibly quartz/chalcedony or weathered feldspar

Tumbled red jasper

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

Tumbled brecciated jasper or quartz-rich rock

Brecciated chalcedony/jasper, chiefly microcrystalline SiO₂ with iron-oxide or clay-rich matrix

Tumbled jasper or chert

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

Red-orange quartzite or iron-stained quartz

Quartzite; predominantly microcrystalline quartz (SiO₂), with iron-oxide staining

Likely basalt (dark volcanic rock)

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron-titanium oxides

Tumbled purple quartz, likely amethyst

Quartz (SiO₂), purple variety commonly colored by iron impurities and irradiation

Green glassy cabochon, likely dyed or synthetic material

Uncertain; possibly green obsidian, chrysoprase, or synthetic glass

Likely hematite-bearing ironstone

Hematite (Fe₂O₃), possibly mixed with other iron oxides and host rock

Weathered granite pebble

Granite, a coarse-grained felsic intrusive igneous rock

Rounded quartz-rich pebble, possibly milky quartz or quartzite

Quartz (SiO₂), potentially quartzite if recrystallized rock

Likely serpentinite (rough green serpentinite rock)

Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, and chrysotile)

Milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Polished agate (likely moss or plume agate)

Microcrystalline quartz, mainly chalcedony (SiO₂), with possible calcite or quartz vein inclusions

Tumbled carnelian (likely)

Chalcedony, microcrystalline quartz (SiO₂), orange-brown variety

Polished agate with possible iron-oxide inclusions

Microcrystalline quartz (chalcedony), SiO₂; inclusions appear to be iron oxides, possibly goethite or hematite

Pyrite (likely a small pyrite crystal aggregate)

Pyrite, iron disulfide (FeS₂)