[bert]

Here is a safe alternative. Fine silver casting grain.

http://www.riogrande.com/MemberArea/ProductPage.aspx?assetname=100802&page=GRID&free_text|1233078643330=metal_2%2f27%2f2009&first_answer=73

Send them a cashiers check or credit card number and they will ship it to you insured. If you don’t use it, they will buy it back.

[El Sordo]

Seems to sell for several dollars an ounce over spot prices.