IDGL Diamond Testing Laboratory
No. 208, 2nd Floor, Gurudwara Road, Karol Bagh
New Delhi- 110005, Delhi (India)
International Gems & Jewellery Laboratories
No. 2141/59, Ground Floor, Naiwala, Gurudwara Road, Karol Bagh
New Delhi- 110005, Delhi (India)
Ar Diamond & Gem Grading Service Private Limited
B- 113, Lagpat Nagar, Part- 1
New Delhi- 110024, Delhi (India)
Ingemco – International Gemological Consortium
Rohini , Delhi - 110085
New Delhi- 110085, Delhi (India)
Shubh Gems
L-75, Jal Vihar Road, Lajpat Nagar- 2
New Delhi- 110024, Delhi (India)