  Evaporation basket. 
This is a resistive heating element coiled into the shape of a basket.  It was used to evaporate gold in a vacuum vapor deposition machine: The gold color is left over gold.  Tungsten is a good material for making evaporation baskets for the same reason it's good for making light bulb filaments: It maintains its strength at very high temperatures. 
Source: Anonymous 
Contributor: Theodore Gray 
Acquired: 8 March, 2008 
Text Updated: 8 March, 2008 
Price: Anonymous 
Size: 1" 
Purity: >95%
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