Mineral Group

Raw tourmaline crystal (probable schorl)

Tourmaline group; likely schorl, NaFe3+Al6(BO3)3Si6O18(OH)4

Rough Garnet (likely Almandine or Pyrope)

Garnet group; Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3

Labradorite (Dark or Black variety)

Labradorite (member of Plagioclase Feldspar group), (Na,Ca)(Si,Al)4O8

Red Garnet (Almandine-Pyrope series)

Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

Tumbled green stone, likely serpentine

Serpentinite; principally serpentine-group minerals, Mg₃Si₂O₅(OH)₄

Green Moonstone (Garnierite)

Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3

Spinifex Textured Komatiite

Ultramafic Komatiite (with Olivine Spinifex)

Polished dark-green stone, possibly serpentine or nephrite jade

Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (actinolite–tremolite amphibole)

Garnet (Polished)

Nesosilicate (Group formula: X3Y2(SiO4)3)

gemstone

Iron Meteorite

Iron Meteorite (Group IAB or IIIAB common)

meteorite

Chondrite Meteorite

Ordinary Chondrite (L or H group classification)

Granite

Phaneritic Acidic Igneous Rock (Granite Group)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Bivalve Fossil (Internal Mold)

Class Bivalvia (Phylum Mollusca)

sedimentary

Serpentinite (serpentinized ultramafic rock)

Serpentine-group minerals, chiefly lizardite and antigorite; commonly derived from peridotite

Likely serpentinite (serpentine-rich rock)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly derived from ultramafic peridotite

Basalt Pebble

Basalt (Mafic Extrusive Igneous Rock)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Sunstone (Feldspar)

Oligoclase / Labradorite (Plagioclase Feldspar Group, (Na,Ca)Al1-2Si2-3O8)

Green Tourmaline (Verdelite)

Tourmaline Group; often Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) or Dravite (NaMg3Al6(BO3)3Si6O18(OH)4)

Serpentinite (Serpentine Rock)

Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.

Metamorphic

Greenstone / serpentinized ultramafic rock (probable)

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite and talc

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, Chrysotile)

Greenstone / Serpentinite

Serpentinite (composed primarily of minerals from the serpentine group Mg3Si2O5(OH)4)

Tumbled pale greenish stone, likely serpentine or altered limestone

Probable serpentine-group rock (antigorite/lizardite), possibly serpentinite; identification is visual only

Gastropod Fossil (Steinkern)

Class Gastropoda (internal mold)

fossil

Bivalve Fossil (Clam)

Class Bivalvia (e.g., Mercenaria or similar genus)

fossil

Tumbled greenish chalcedony or serpentine pebble

Likely microcrystalline quartz (chalcedony, SiO₂) or serpentine-group mineral; exact identification requires testing

Tumbled green stone, likely serpentine or aventurine

Probable serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or green aventurine quartz (SiO₂)

Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.

Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)

Mixed rounded stream pebbles

Most appear to be granitic and mafic igneous rocks, including granite, gneiss, basalt, and possibly quartzite; exact identification is uncertain from the image.