  Large cubical lump. 
Dave Hamric sells elements on his website and on eBay.  He donated this beautiful chunk of yttrium as a sample to show the sorts of things he can supply: If you need some rare earths, contact him or check out his eBay auctions. 
 
This looks like distilled metal, probably of high purity, probably from China: He asked me to have it analyzed so soon I'll have a specific purity determination. 
 
Click the source link for more information about his offerings. 
 
Source: Dave Hamric 
Contributor: Dave Hamric 
Acquired: 9 July, 2003 
Price: Donated 
Size: 1" 
Purity: >99%
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