Serpentine is available in cubes, rectangles, beads and rondelles. 
 
Color is green with hues of darker green and lighter greens.
 
All stones are around 5 mm per 4 or 6 mm. These stones are meant to be strung on a thread, wire, etc.
They have a predrilled hole.
 
Varied origins.
 
Price is for 1 unit.