Identify any rockfrom a photo.

Labradorite pendant

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

Rounded orange-brown pebble (likely iron-stained quartzite)

Quartz-rich quartzite; exact identification is uncertain from the image

Blue chalcedony cabochon

Microcrystalline quartz (SiO₂), chalcedony variety

Possibly a polished pale-green gemstone cabochon (likely aquamarine or fluorite)

Undetermined from the image; aquamarine is blue-green beryl (Be₃Al₂Si₆O₁₈), while fluorite is CaF₂

Polished banded agate

Microcrystalline quartz (SiO₂), chiefly chalcedony

Tumbled pink chalcedony (likely pink agate)

Chalcedony, microcrystalline SiO₂; variety of quartz

Weathered limestone

Calcite-rich limestone, chiefly calcium carbonate (CaCO₃)

Yellow faceted gemstone, likely citrine

Citrine (yellow quartz, SiO₂); identification from the image is tentative

Possible rough green tourmaline (verdelite)

Tourmaline group; commonly elbaite, Na(Li₁.₅Al₁.₅)Al₆Si₆O₁₈(BO₃)₃(OH)₄

Tumbled sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; likely with white calcite inclusions

Likely polished labradorite (small tumbled stone)

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

Tumbled opalite (likely man-made glass)

Opalite, a trade name for opalescent glass; not natural opal