Some items you might buy on Ebay auctions:

Peridot & Black Olivine Pave CZ Ring Size 10 READ for 5*6*7*8*9
330732796515 0 Latest Peridot Ring AuctionsUS $22.00 (0 Bid)
End Date: Sunday May-20-2012 20:34:02 PDT
Bid now | Add to watch list
Genuine Green Peridot Sterling Silver Ring Size 7 -- PD9144
290712482466 0 Latest Peridot Ring AuctionsUS $24.95 (0 Bid)
End Date: Sunday May-20-2012 20:34:03 PDT
Bid now | Add to watch list