Mineraloid

Tumbled dalmatian jasper (likely)

Microcrystalline quartz/chalcedony with black amphibole or aegirine inclusions; commonly sold as “dalmatian jasper”

Tumbled green aventurine (probable)

Quartz (SiO₂), commonly with fuchsite mica inclusions

Tumbled green jasper or serpentine

Jasper: microcrystalline quartz (SiO₂); possible serpentine: Mg₃Si₂O₅(OH)₄

Polished green serpentinite

Serpentinite, chiefly serpentine-group minerals (antigorite/lizardite/chrysotile), commonly with magnetite and minor carbonate

Limonite (Ironstone Concretion)

Limonite (Hydrous Ferric Oxides mixed with Goethite)

Tumbled orange chalcedony and a gray stone disk

Chalcedony (microcrystalline quartz, SiO₂); disk likely fine-grained sandstone or slate

Pink Granite

Phaneritic Felsic Igneous Rock

Dark slate or fine-grained metamorphic rock

Slate; chiefly fine-grained phyllosilicates, quartz, and feldspar

Dark mafic rock, likely basalt with iron-oxide veining

Basalt; predominantly plagioclase and pyroxene, possibly olivine, with hematite/goethite staining

Weathered sandstone or siltstone

Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by silica, iron oxides, or carbonate

Dalmatian jasper

Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions

Flint or chert flake

Microcrystalline quartz (SiO₂), commonly chert/flint

Eclogite

Eclogite (Omphacite + Almandine-Pyrope Garnet)

Iron-rich meteorite candidate

Undetermined stony-iron or iron meteorite; mineralogy likely Fe–Ni metal with silicates

Granite

Phaneritic Igneous Rock (Granite)

Granite

Intrusive Phaneritic Felsic Igneous Rock

Likely weathered iron-rich sandstone or laterite

Ferruginous sandstone; predominantly quartz (SiO₂) cemented or stained by iron oxides such as hematite (Fe₂O₃) and goethite (FeO(OH))

Iron-stained sandstone

Quartz arenite or lithic sandstone, variably cemented by iron oxides

Greenstone / altered mafic rock

Likely chlorite–actinolite schist or metabasalt; exact identification requires testing

Gabbro

Gabbro (composed mainly of calcium-rich plagioclase feldspar and pyroxene)

Likely basalt pebble

Basalt, a fine-grained mafic volcanic rock; commonly composed of plagioclase, pyroxene, and sometimes olivine

Weathered sandstone block

Quartz-rich sandstone, likely arkose or calcareous sandstone

Chrysoprase- or serpentine-bearing quartz vein with pyrite

Quartz (SiO₂) with iron sulfide, chiefly pyrite (FeS₂), in altered Mg-rich rock; green material may be serpentine or nickel-bearing chalcedony

Polished green serpentine

Serpentinite, chiefly antigorite/lizardite Mg₃Si₂O₅(OH)₄

Flint or chert

Microcrystalline quartz (SiO₂), likely gray chert/flint

Chert or flint nodule

Microcrystalline quartz (SiO₂), commonly chalcedony with possible opaline silica

Weathered iron-rich concretion or breccia

Goethite/hematite-bearing limonite concretion, possibly ferruginous sandstone

Weathered iron-rich sandstone or ironstone

Ferruginous sandstone, likely limonite/goethite-cemented quartz arenite

Iron-rich concretion or weathered ironstone nodule

Goethite–hematite-rich limonite concretion (tentative)

Jasper and Greenstone Pebble

Siliceous rock / Metamorphic pebble

Rounded iron-rich pebble, likely hematite-rich sandstone or ironstone

Ironstone (iron-oxide-cemented sedimentary rock; exact mineralogy cannot be confirmed visually)

Weathered sandstone or siltstone

Clastic sedimentary rock, likely quartz-rich sandstone; exact mineralogy requires testing

Polished pale stone, likely limestone or quartzite pebble

Most consistent with micritic limestone (calcite, CaCO₃), though the image cannot confirm mineralogy

Sandstone

Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)

Weathered iron-rich rock (likely ironstone or limonite-bearing concretion)

Goethite–hematite–limonite mixture, commonly written FeO(OH) ± Fe₂O₃

Dalmatian jasper

Spotted rhyolite (commercially called Dalmatian jasper), chiefly quartz and feldspar with black aegirine/arfvedsonite inclusions

Small tumbled blue-green stone, possibly chrysocolla or turquoise

Indeterminate copper-bearing mineral; possible chrysocolla (Cu₂H₂Si₂O₅(OH)₄·nH₂O) or turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O)

Dragon Blood Jasper

Microcrystalline Quartz (Chalcedony) with Epidote and Piemontite

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions

Conglomeratic breccia (possibly polymictic volcanic breccia)

Polymictic breccia; clasts in a fine-grained volcanic or sedimentary matrix

Fossilized bivalve shell

Bivalvia indeterminate; likely a preserved clam or cockle shell, composed mainly of calcium carbonate (CaCO₃)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)