This piece was tested by a gemologist - it is green nephrite jade. The jade is very translucent, with a few black inclusions as you see in the photos.
Carving is very well done. There is a missing piece on the right side of the lid, and a fracture on the right side, see photos. This does not have its original stand. As with most jade - it is difficult to date this piece.
The style is definitely most similar to Qing dynasty with reference to earlier periods. Measures just over 6 inches long by 3.5 inches. This item is in the category "Antiques\Asian Antiques\China\Vases". The seller is "youngbuch" and is located in this country: US. This item can be shipped to United States, Canada.