Chinese puzzle balls

Puzzle balls are carved concentric spheres, each of which rotates independently. It's almost unimaginable how much concentration and skill must be required to carve this one out of a single piece of material (in the past, often ivory - currently, jade or synthetic materials). The example below, which I found in a display case being ignored by virtually every bustling traveler in the Memphis airport, is claimed to have forty-eight nested spheres. More about them here and here.

I'm sorry about the silly filter, which actually makes it harder to see the detail in the ball. I'm trying to walk back my use of the filters. 

I'm sorry about the silly filter, which actually makes it harder to see the detail in the ball. I'm trying to walk back my use of the filters.