Starting with Charles Carmona based in Los Angeles a Master appraiser and gemologist famous for laboratory certificates, appraisals, gemological books, and field work with the World Bank to develop production and upward value chain development in source mining countries such as Vietnam and Tanzania. Then with Guild Gem Laboratories bringing advanced and intensive gemological training including industry leading grading standards, country of origin criteria, and treatment detection, and the latest gemological research.

Finally with Andrew Lucas bringing over three decades of mine-to-market global gem and jewelry industry research including twenty-eight years of educational development, teaching, Field Gemology diamond, colored gemstone, pearl, and jewelry industry global supply chain research, documentaries, articles, and gemological laboratory sample collection from mines at the Gemological Institute of America. Andrew Lucas emphasis in Education is to provide first-hand information that is real-world, practical, accurate and provides our students with the advantages needed to today’s highly competitive gem and jewelry industry. Stressing turning theoretical and laboratory gemology into industry practical. Showing global resource connection, evaluation, opportunities in the supply chain, how to create the next opportunities with gemstones, and the gemology needed for the real-world gem and jewelry industry.