Industrial Byproduct

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Unidentified rough rock fragment

Undetermined; the image does not show enough diagnostic detail for a reliable rock identification

Likely polished labradorite or another feldspar-rich stone

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

Pink-and-cream mineral bead bracelet (likely rose quartz and pale quartz)

Quartz, SiO₂; rose quartz is pink quartz, though the beads may include other pale stones.

Opalite (likely imitation opal glass)

Man-made opalescent glass; not a natural mineral (often sold as opalite)

Faceted green gemstone, possibly peridot

Uncertain from the image; peridot is gem-quality olivine, (Mg,Fe)₂SiO₄

Fossil or modern bivalve shell

Calcium carbonate shell, likely aragonite (CaCO₃); exact species cannot be determined from the image

Weathered stone nodule or concretion

Unidentified lithic concretion; composition cannot be determined from the image

Blue-green crystal point, likely fluorite

Fluorite (CaF₂), tentative visual identification

Small gray-green pebble (likely fine-grained volcanic rock)

Indeterminate; possibly andesite or basalt

Likely polished red-and-blue jasper (identification uncertain from the image)

Jasper, an opaque, microcrystalline variety of quartz (SiO₂)

Pink feldspar-rich rock, likely rose quartz or pink granite fragment

Indeterminate from image; possible potassium feldspar (orthoclase, KAlSi₃O₈) or quartz (SiO₂)

Green-gray stone pebble (not reliably identifiable from the image)

Undetermined; possibly a fine-grained sedimentary rock such as mudstone or siltstone

Blue sodalite bead necklace

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Blue-gray mineral specimen (possibly sodalite)

Undetermined; appearance may be consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), but the image is insufficient for reliable identification

Clear quartz crystal beads

Quartz (silicon dioxide, SiO₂)

Polished orange agate beads

Chalcedony, microcrystalline quartz (SiO₂), commonly sold as agate

Small weathered rock fragment, likely iron-stained sandstone

Probable quartz-rich sandstone (dominant mineral: SiO₂); exact identification is uncertain from the image

Orange Calcite (Polished Point)

Calcium carbonate (CaCO3)

Tumbled jasper (possibly orbicular jasper)

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

Rounded river stone (likely iron-stained sandstone or siltstone)

Indeterminate ferruginous sandstone/siltstone; composition cannot be confirmed from the image

Possible blue-green fluorite rough

Fluorite (calcium fluoride, CaF₂); identification is provisional from the image

Small banded metamorphic rock fragment

Indeterminate foliated metamorphic rock; possibly mica schist or gneiss

Unidentified pink-and-green mineral-bearing rock

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

Tumbled orange-brown stone, possibly quartzite or jasper

Undetermined; likely iron-stained quartz-rich rock (quartz, SiO₂)

Likely garnet crystal

Garnet-group silicate; species cannot be determined from the image

Polished amber-colored translucent stone, likely citrine or yellow chalcedony

Most consistent with quartz (SiO₂), potentially citrine; translucent yellow chalcedony is another possibility

Rounded river pebble (lithology unclear)

Indeterminate natural rock; no specific mineral or rock type can be identified from the image

Tumbled tiger’s-eye

Quartz variety, fibrous golden-brown quartz (SiO₂), commonly pseudomorphic after crocidolite

Quartzite

Quartzite

Iron-stained chalcedony or jasper

Microcrystalline quartz (SiO₂), likely ferruginous jasper/chalcedony

Tumbled red jasper (likely dyed)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides; possibly dyed

Small rounded light-colored mineral pebble

Indeterminate; possibly quartz, feldspar, or calcite

Bronze or iron-age decorated pottery sherd

Archaeological ceramic fragment; likely fired clay with impressed or molded decoration, not a natural rock

Fuchsite or Green Mica Schist

Muscovite variant (KAl2(AlSi3O10)(OH)2 with Cr)

Quartz pebble with iron stains

Macrocrystalline Quartz (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

River Stone (Basalt)

Extrusive Igneous Rock (Mafic)

Diamond (Cullinan Heritage)

Carbon (C)

Quartzite

Quartzite (SiO2)

Mica Schist

Schist (muscovite-quartz dominant)

Quartz Pebble

Silicon Dioxide (SiO2)