GSL (Gem Studies Laboratory)
http://www.gem.org.au/about_gaa/gem_studies_laboratory_gsl/
GSL ; Gem Studies Laboratory in Sydney is the Gemmological Association
of Australia's endorsed diamond grading laboratory. Services include;
Diamond Fingerprinting
Diamond Certification
Pearl X-ray Testing
Gemstone Authentication
Gem & Jewellery Photography
GSL's Australian Opal and Gemstone Photographic Library
GAA (Gemmological Association of Australia)
http://www.gem.org.au/about_gaa/gem_studies_laboratory_gsl/
The Gemmological Association of Australia (GAA) is Australia’s long established gemmological educator. Since 1945, the Association has been responsible for producing Australia’s gemmologists by educating and updating members of the gem and jewellery industry and the general public, about all aspects of gemstones and their substitutes.
JAA (Jeweller’s Association of Australia)
Established in 1931, the Jewellers Association of Australia (JAA) works to represent and protect the interests of the jewellery industry and its consumers. With a membership of around 1100 outlets, the JAA is a national organisation that covers all areas of the jewellery industry - from manufacturing, wholesaling, distribution to retail.