These are Borobudur Buddhist temple reliefs made from volcanic rock.  They are museum replica reliefs from the first gallery.  These were purchased in Yogyakarta, Java in the early 90s and are in excellent condition.  Includes the original cases.  There are 3 reliefs in the collection.

Dimensions are 10.5" x 10.5" with the frame. Each relief, without case, weighs approximately 3.3 pounds.