A staff worker shows rings on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

A staff worker shows a jade pot on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

A staff worker shows jade Chinese chess on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

A visitor views gold exhibits on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

Ouyang Qiumei, an expert on jade articles, introduces a jade necklace on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

A staff worker shows a jade tea set on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown. 

Visitors view a jade necklace on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

Visitors view gold exhibits on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.

A staff worker shows a jade fan on a jewelry exhibition held at China International Exhibition Center in Beijing, China, Nov. 5, 2009. The 5-day-long 2009 China International Jewelry Exhibition kicked off here on Thursday with about 600 companies from 15 countries and regions on shown.