Mr. Cheng Chi-Heng, Conroy, joined the Group in 2007, was appointed as an executive director of the Company in July 2011. Mr. Conroy Cheng is responsible for managing the diamond and gemstone raw materials of the Group. Mr. Cheng is also a director of certain subsidiaries of the Group.

Mr. Cheng is an executive director of New World Development Company Limited, which is a listed public company in Hong Kong. He is currently a member of the executive committee of the Diamond Federation of Hong Kong, China. 

Mr. Cheng holds a Bachelor of Arts degree in Economics from The Western University (formerly known as The University of Western Ontario). Prior to joining the Group, Mr. Cheng had worked at Yu Ming Investment Management Limited from 1999 to 2000 as a corporate finance executive.

Mr. Conroy Cheng is a nephew of Dr. Cheng Kar-Shun, Henry, Mr. Cheng Kam-Biu, Wilson and Mr. Cheng Sek-Hung, Timothy, a cousin of Dr. Cheng Chi-Kong, Adrian and Ms. Cheng Chi-Man, Sonia, and a grandnephew of Mr. Cheng Yu-Wai.