Mineral (Man Enhanced)

Blue beach pebble, likely milky quartz or quartz-rich stone

Quartz (SiO₂), possibly a quartz-rich pebble; identification is tentative from the image

Weathered granite

Granite, a coarse-grained felsic intrusive igneous rock

Polished stone sphere, possibly agate or jasper

Likely microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image

Schist

Schist (Crystalline metamorphic rock)

Likely weathered native copper-bearing rock

Unidentified copper-bearing specimen; native copper (Cu) is possible but cannot be confirmed visually

Limestone with Calcite Veins

Calcium Carbonate (CaCO3)

Likely fluorite crystal fragment

Fluorite (calcium fluoride, CaF₂)

Tumbled dark green stone, likely serpentinite or greenstone

Serpentinite (antigorite/lizardite-rich), or chlorite–amphibole greenstone

Tumbled serpentine or soapstone pebble

Serpentine-group minerals, chiefly antigorite/lizardite; possibly talc-rich steatite

Granodiorite

Granodiorite

Likely garnet-bearing rock

Garnet in a dark metamorphic matrix; garnet is commonly almandine, Fe₃Al₂(SiO₄)₃

Polished carnelian agate cabochon

Microcrystalline quartz (chalcedony), SiO₂, colored mainly by iron oxides

Likely dark green jasper or serpentinite pebble

Undetermined fine-grained rock; possible serpentine-group mineral (approx. Mg₃Si₂O₅(OH)₄) or jasper (microcrystalline SiO₂)

Iron-oxide-stained rock with a pale mineral vein

Likely limonite/goethite-stained quartz-bearing rock; exact identification is uncertain from the image

Iron-rich rock, possibly limonite/goethite-bearing quartz or weathered ironstone

Limonite (FeO(OH)·nH₂O), commonly mixed with goethite (α-FeO(OH)) and quartz

Raw green calcite (probable)

Calcite, CaCO₃; green coloration may reflect inclusions or alteration minerals

Tumbled carnelian (likely)

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

Polished red jasper

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

Malachite-bearing copper ore

Malachite, Cu₂CO₃(OH)₂, likely mixed with chrysocolla, copper minerals, and iron oxides

Quartz (White/Milky Pebble)

Silicon Dioxide (SiO2)

Red agate bead (likely dyed or treated)

Agate, a microcrystalline variety of quartz; SiO₂

Rounded quartz-rich pebble

Massive quartz (silicon dioxide, SiO₂), possibly milky quartz or quartzite

Milky quartz

Quartz (silicon dioxide, SiO₂)

Likely iron-rich volcanic rock (weathered basalt or andesite)

Indeterminate, probably weathered basalt/andesite with iron-oxide staining

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Diamond

Carbon (C) - Native Element

Rounded gray-green rock, likely gneiss

Gneiss (tentative; mineral composition and texture cannot be confirmed from the image)

Druzy quartz geode fragment

Quartz, SiO₂, with a coating of fine drusy crystals

Milky quartz with dark mineral inclusions

Quartz, SiO₂; dark inclusions are not identifiable from the image

Polished bumblebee jasper bead

Bumblebee jasper (trade name); chiefly calcite, aragonite, and pyrite, with variable realgar/orpiment and other minerals

Small dark mineral fragment

Undetermined; image lacks diagnostic detail for reliable identification

Unidentified pink-and-green mineral-bearing rock

Not reliably identifiable from the image; possible pink feldspar with green epidote or another green mineral

Likely raw quartz crystal fragment

Quartz (SiO₂), identification tentative from the image

Likely gray-green metamorphic rock fragment

Unidentified fine-grained metamorphic rock; exact identification is not possible from this small image

Tumbled carnelian

Carnelian, orange-red variety of cryptocrystalline chalcedony (SiO₂)

Tumbled red chalcedony or dyed agate

Microcrystalline quartz (SiO₂), likely chalcedony/agate; vivid color may be dye-enhanced

Quartz-rich rock, possibly milky quartz with iron staining

Predominantly quartz (SiO₂); exact rock type cannot be confirmed visually

Pink feldspar (likely orthoclase)

Orthoclase, KAlSi₃O₈

Blue-green mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), tentative identification

Ironstone (iron-oxide-rich rock)

Ironstone, composed mainly of hematite (Fe₂O₃) and/or goethite (FeO(OH)); exact minerals cannot be confirmed visually

Rounded, banded metamorphic cobble

Likely gneiss or foliated quartz-rich metamorphic rock; exact identification is uncertain from the photograph.

Small gray-green tumbled stone, likely serpentine

Serpentine-group minerals, approximately Mg₃Si₂O₅(OH)₄; identification is uncertain from the image alone