Man Made Metamorphic Style Composite

Polished honey-colored chalcedony cabochon ring

Microcrystalline quartz (SiO₂), likely yellow/orange chalcedony or agate

Polished turquoise sphere with purple matrix/inclusion

Turquoise, hydrated copper–aluminum phosphate; approximate formula CuAl₆(PO₄)₄(OH)₈·4H₂O

Tumbled turquoise-bearing stone (likely turquoise or chrysocolla)

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; possible chrysocolla: hydrated copper silicate

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Goldstone (likely blue-free synthetic goldstone pendant)

Synthetic aventurine glass; silica glass with dispersed metallic copper crystals

Polished/tumbled stone, likely serpentine or agate

Probable serpentine-group mineral (antigorite/lizardite), possibly a green jasper or agate; image is insufficient for certainty

Red cabochon gemstone ring (likely glass or synthetic stone)

Undetermined; the image does not establish a natural mineral identity

Jasper (Mookaite style)

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Quartz on Chlorite Schist

Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)

Quartzite

Quartzite

Blue glassy cabochon, likely blue quartz or synthetic glass

Possibly dyed blue chalcedony/quartz (SiO₂); visual identification is inconclusive

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Paving-concrete aggregate with a rounded stone

Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock

Basalt

Basalt

Eclogite

Eclogite

Likely slate fragment

Slate; fine-grained foliated metamorphic rock, commonly quartz–mica–chlorite rich

Granite

Granite (plutonic igneous rock)

Rounded green-gray pebble, likely serpentinite

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite

Iron-stained quartz-rich rock, possibly jasper or chert

Microcrystalline quartz (SiO₂) with iron oxides/hydroxides

Granite

Felsic Plutonic Rock

Flint or chert, possibly a knapped stone tool

Microcrystalline quartz (SiO₂), commonly chalcedony with possible carbonaceous impurities

Tumbled quartz-rich pebble, possibly milky quartz or quartzite

Quartz (SiO₂), potentially quartzite if metamorphically recrystallized

Quartz-rich rock fragment

Likely milky quartz (SiO₂), possibly a pale quartzite fragment

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Ruby

Corundum (Al2O3 with chromium impurities)

Polished greenstone (likely serpentine or altered basalt)

Serpentinite, mainly serpentine-group minerals (Mg₃Si₂O₅(OH)₄); exact identification requires testing

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Gneiss

Foliated quartz–feldspar gneiss, likely biotite-bearing

Pegmatite

Igneous Pegmatite

Likely green-gray serpentine-bearing rock

Serpentinite, dominated by serpentine-group minerals (antigorite/lizardite; Mg₃Si₂O₅(OH)₄), possibly with chlorite or talc

Rock crystal quartz fragment

Quartz (silicon dioxide, SiO₂)

Fossilized echinoid (sea urchin), likely a flint/chalk-associated test

Echinoid fossil; likely a regular echinoid such as Echinocidaris or related taxon, composed mainly of recrystallized calcite (CaCO₃)

Diabase (Dolerite)

Diabase / Dolerite

Milky quartz

Quartz (silicon dioxide, SiO₂)

Biotite Mica Schist

Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2

Granite with Epidote

Granite, containing quartz, feldspar, and epidote

Land Snail Shell

Gastropoda (Calcium Carbonate, CaCO3)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Sandstone

Arenite

Graphite

Graphite (elemental carbon, C)