• President and Co-founder of Guild Institute of Gemology
• Senior Vice President of Guild Gem Laboratories Shenzhen
• President of Guild Gem Laboratories Bangkok
• 38 years industry experience including educational course development and field

Gemology.

• 28 years at the Gemological Institute of America instructing and developing courses in
  Manager of field Gemology researching global mine-to-market supply chain and collecting Gemological research samples.
• Published 3 books relating to field gemology.
• Published numerous articles and field reports.