International Institute of Diamond Grading & Research (IIDGR)
Assaying & Hallmarking
Hallmarking Centre, Diamond Grading Certificate
We have been testing and hallmarking precious metals 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.