Unknown

Likely serpentinite (serpentine-rich metamorphic rock)

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

Serpentinite (likely)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly with magnetite and relic olivine/pyroxene

Polished serpentine-rich rock (likely serpentinite)

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

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Serpentine (likely antigorite/lizardite)

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

Serpentine-rich metamorphic rock

Serpentinite, likely with magnetite and weathered ultramafic minerals

Serpentinite (probable)

Serpentinite, dominated by serpentine-group minerals (chrysotile, lizardite, or antigorite), commonly with magnetite

Likely weathered chert or flint nodule

Microcrystalline quartz (SiO₂), possibly chalcedony-rich chert

Blue slag glass or dyed glass-like industrial material

Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass

Likely serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, possibly with magnetite, chromite, and brucite

Weathered serpentinite (likely)

Serpentinite; predominantly serpentine-group minerals, commonly lizardite, antigorite, and chrysotile, with possible magnetite and talc

Serpentine-rich ultramafic rock

Serpentinite (predominantly serpentine-group minerals: lizardite, chrysotile, and/or antigorite)

Unidentifiable Rock Fragment

Unknown Organic Object (likely a berry or fruit)

Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.

Pale green tumbled mineral fragment, likely serpentine or green calcite

Probable serpentine-group mineral (Mg3Si2O5(OH)4) or, less likely, calcite (CaCO3); identification is uncertain from the photograph

Serpentine (polished/tumbled)

Serpentinite; chiefly antigorite, lizardite, and chrysotile, commonly with magnetite and carbonate minerals

Rounded yellow-green pebble, likely serpentine or quartzite

Provisional: serpentinite/serpentine-rich rock; alternatively iron-stained quartzite

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

Malaysian 50 Sen Coin

Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)