International Jewelry Industry
Professor-level tutors
LUMI Yuguang Gemology Promotion Center is taught by a team of teachers composed of Professor Shen Xitian and professional jewelry experts. It covers a series of courses from entry-level to advanced gemology knowledge, teaching students the knowledge and practical skills of the entire industry chain from mining areas to markets. It leads students to have a deep understanding of the magnificent gem world.
Dr. Andy Shen
Dr. Shen Xitian
Director of the Yuguang Gemology Promotion Center
Consultant of Guild Laboratory and Teaching Center, USA
Distinguished Professor and Doctoral Supervisor, School of Jewelry, China University of Geosciences (Wuhan)
Adjunct Professor, National Taipei University of Technology
Chairman of the International Mineral Association Committee on Gemstone Materials (IMA-CGM)

Teaching Team
GUILD Gemology Education and Training Director
Senior Vice President of GUILD Gemstone Laboratory
GUILD Gemology Education and Training Director
Senior Vice President of GUILD Gemstone Laboratory
Director of the Yuguang Gemology Promotion Center
China University of Geosciences (Wuhan) Jewelry College
Distinguished Professor, Doctoral Supervisor
GUILD Gemology Education and Training Director
Senior Vice President of GUILD Gemstone Laboratory
George Chen
Lecturer Chen Yijun
GIA GG (Graduate Gemologist)
Guilder Gem Laboratory
Advanced Emerald Identification and Appraisal Diploma Keelung Carat Jewelry Manager
Honorary Chairman of the GIA Alumni Association Taiwan Chapter (2020-2024)
Served as Chinese translator for more than ten jewelry professional lectures