Gazing ball. 
This is a stainless steel ball 12" in diameter.  It's intended to be used in a garden as a gazing ball, but I like it because it's a great contrast to the several very heavy samples I store on the floor near the Table.  Being hollow, it only weighs a few pounds, compared to 50 or more for the other floor samples.  It surprises people. 
Source: outdoordecor.com 
Contributor: Theodore Gray 
Acquired: 14 September, 2003 
Price: $40 
Size: 12" 
Purity: 75%
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