3 Antique Victorian Snuff or Trinket Boxes with Banded and Moss Agate

A nice group of three antique Victorian snuff or trinket boxes with metal sides and banded or moss agate tops and bottoms. I’m not quite sure what the smallest one is made of. It has some beautiful coloring. The metal is not marked so likely a base metal of some kind. The box with the rounded base has a crack through the top. The boxes are in generally good condition otherwise with minor nicks, scratches and imperfections.