Here is website for loose diamond price,

来源: N. 于 2008-12-21 00:02:57 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

http://www.mondera.com/diamonds/Search/search_results.asp?mscssid=ZYQIKROIILDIIQCBWIJLPUELEKOCETQR

Basically, you can get it between $7K~$10K. For name brand and settings -- not sure.