Chinese Neolithic ceremonial harvesting blade (hu), made of semi translucent mottled green nephrite. Exceptionally thin and sharp cutting edge. 4 conical holes would have been for attaching to wooden handle on working versions of this type of blade. Likely from the Longshan culture. On a custom wooden stand. Age: (Circa 2,000 B.C.) Provenance: Came from an Estate of Philip Cardiero in Pebble Beach, CA. Size: 19 1/4" long x 3 7/8" wide x 3/16" thick.