A bolo tie

marked TC-10 Mexico - 925 - the mark is a little hard to read

A face in a carved deep blue stone - dangles filled with green

I am not sure of the material - it looks like malachite with some filler

Blue cord tie is fabric

The length of silver slide is 3 inches from top of crown to the bottom of the dangle

The silver shows tarnish - a gap on the green stone to the right of the face - see last picture