International Institute of Diamond Grading & Research
Assaying & Hallmarking
Gemology Certificate, Diamond Grading Certificate
We have been testing and hallmarking precious metals since 2008 and based in London. We offer Assaying and Hallmarking services for all kind of gold and silver jewellery and are BIS recognized hallmarking center. We offer our customers standards of accuracy and reliability that are second to none. If you have any further queries, please do not hesitate to contact us.