Notable Highlights from AGL's past 5 years

Auction Houses and Famous Jewels: AGL is approached on a regular basis to perform testing on notable, unique and historic gems and jewelry articles. A couple of truly exceptional opportunities include:

  • The Elizabeth Taylor jewels: Christies – December 2011
  • The Atocha Gold and Emerald ornament: Sotheby’s – February 2013


Financial newspapers:

Christopher Smith Awards:


Composite Ruby:


Excursions to important gem-producing localities: As part of our continuing efforts to remain at the forefront of gemology, AGL travels to the world’s most important gem-producing regions. There is an endless pursuit to study new gem materials, gemstone treatments and gem deposits.

  • Tanzania: The Merilani tanzanite deposits
  • Mozambique: The Montepuez ruby deposits
  • Zambia: The Kagem emerald deposit
  • Burma: The Mogok valley


Presentations given at international conferences: AGL is regularly asked to participate in gemological conferences held around the world.

  • Accredited Gemologist Association (AGA): Tucson and Las Vegas
  • Gemological Institute of America (GIA): Symposium and various Alumni chapter locations
  • Gemmological Association of Great Britain (Gem-A): London, England
  • Scottish Gemmological Association (SGA): Edinburgh, Scotland
  • National Gemstone Testing Center (NGTC): Beijing, China
  • Canadian Gemmological Association (CGA): Toronto, Canada
  • GemWorld conference: Chicago
  • Christie’s: Hong Kong
  • Sotheby’s: Hong Kong