Australia

JAA (Jewellers Association of Australia )

DCLA (diamond/gem grading laboratory)

GSL (diamond/gem grading laboratory / jewellery valuers)

AusCert (diamond/gem grading laboratory)

Jewel (home jewellery & diamond cleaning products)

International

HRD (diamond/gem grading laboratory)

IGI (diamond/gem grading laboratory)

GIA (diamond/gem grading laboratory)

EGL (diamond/gem grading laboratory)

AGS (diamond/gem grading laboratory)