This is another older Fenton color and shape and again this was produced into the 1930's. Thiis piece is, in this shape, called the cupped bowl. When it is opened it's called a flower form bowl and there are open candle holders that match it.
Fenton made Jade Green from 1921 to the early 1930's. While much the same color as Jadite; it was most often produced as decorative wear but they did make dinnerware and kitchen items as well. It is occasionaly found with black or lilac lids and sometimes with a black foot on a stem.