A jade tubular ornament, Neolithic period (private English collection)of cylindrical form, the tube has a hole drilled from both ends and met in the centre, opening big at both ends and small at the centre, the stone of russet colour with some orange patches, when zooming in for 60 to 100 times to observe the tiny marks on the lot, marks of using soft abrasives could be seen, such marks are very different on modern jade pieces where new machines are used for carving and polishing.Provenance: private English collection6cm