Punjab's Very First Gem Lab, Navratan Gem Lab, Established in April 2007 in Ludhiana is providing its services in the field of Gem Identification, Diamond Grading and Studded Diamond Jewellery Grading.Today’s market is flooded with the synthetic and simulant gem stones. As a layman you can not differentiate between Genuine (real) and non-genuine (duplicate) gem stones. To make you aware and help you to get the full value of your money spent on the gem stone NGL initiated its services in Ludhiana in April 2007.