Hand Carved Song Birds 8" Hardstone Green to Golden Brown Audubon Chinese ?

Hand Carved Song Birds 8" Hardstone Green to Golden Brown Audubon Chinese ? This is a beautiful carved piece, but I am unsure of the stone. It is not jade. I did not find any chips/cracks - there is what looks like a natural stone crack on the top bird's tail (see pictures). It weighs just under four pounds. Approximate dimensions are 8" tall X 6.5" wide X 3.5" deep. Please review the pictures well and carefully, they are part of the description. I am an experienced packer/shipper of fragile items. It will be packed properly and shipped with insurance. Please see the pictures for more details and the full item condition. Thank you.