This finely carved and pierced vintage Chinese jade plaque features a peach, leaves, vines and what looks to be a lady bug.  It is done in a grey green jade.  It is 2 1/2" x 1 1/2" x 3/16" thick.  It features virtuoso carving and composition.  I have included a photo of the piece against natural light that features it subtle color shading. I think it dates to the middle of the 20th c.