Fragment

Sandstone Fragment

Sandstone Fragment

A sandstone fragment taken from the possible Monastery Courtyard, dated to be from the end of 16th century and early 17th century, from Santo Domingo in Oaxaca, Mexico.

Sandstone fragment of gravemarker with tooling marks

Sedimentary alleghany sandstone

Selenite Deposit

Serpentine Fragment

Serpentine Fragment

Serpentine Fragment

Metamorphic “Blue” Serpentine

Serpentine Fragment

Serpentine Fragment