DIA Grading Laboratory was established in 1996 by GIA qualified grader Lesley Tsakos, and has continued to grow and service the industry for the past 21 years.
DIA is now owned by daughter Nichola van Niekerk and long standing friend and colleague Nicolette van Niekerk, the company is continuing to grow on the strong foundation on which it was built.
DIA are proud to announce that the company has now expanded its services to include Tanzanite Grading as well as Jewellery Appraisals.
Trained up by Gemmologists Arthur Thomas of ATG and Jeremy Rothon of Gemlab, the company is confident that they can offer the quality and consistent services that the industry has come to rely on from them.
When asked about their new adventure, the two Nikki’s said ”We are excited about where the company is headed, and we look forward to this new venture with our clients”.