Gemological Institute of America
www.gia.edu

AGS Laboratories
www.agslab.com

Auscert
www.auscertdiamonds.com.au

Jewellers Association of Australia
www.jaa.com.au

The Gemological Association of Australia
www.gem.org.au

Argyle Diamonds
www.argylediamonds.com.au

National Council of Jewellery Valuers
www.ncjv.com.au