Elephant ivory is pictured in this undated handout photo courtesy of the United States Attorney's Office, District of New Jersey. A Chinese citizen, the admitted ringleader of an international ... more 
Elephant ivory is pictured in this undated handout photo courtesy of the United States Attorney's Office, District of New Jersey. A Chinese citizen, the admitted ringleader of an international smuggling operation that trafficked in $4.5 million worth of rhinoceros horns, ivory cups and trinkets, pleaded guilty on December 19, 2013 in federal court in New Jersey, prosecutors said. Zhifei Li, 29, said he had sold 30 raw rhino horns for as much as $17,500 each to Chinese factories that carve them into cups that are thought to improve health, according to federal prosecutors. REUTERS/United States Attorney's Office, District of New Jersey/Handout (UNITED STATES - Tags: CRIME LAW ANIMALS) ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS less 
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Reuters | Photo By HANDOUT / Reuters
Thu, Dec 19, 2013 7:39 PM EST