Colored Diamond

Identification and Treatment Certification
Offering Single and Bulk Testing Report

All Required Tests will be Done

167th Gemmology & 122nd Diamond Grading


GII Spreads It's Wings at SEEPZ

Diamond/Jewellery Identification Service

Same Day Delivery

Next batch of Diploma in Gemology Starting from 20th Aug, 2024

Next batch of Diamond Grading starting from 20th Aug, 2024

Chairman's Desk

“I express my sincere thanks to all concerned for placing the faith and confidence in me to lead 53 years old Institute, Gemmological Institute of India (GII). GII was established by a team of enthusiastic and far sighted gem traders of  Gem and Jewellery Exporters’ Association (GJEA)  to promote and propagate science of gems, develop and validate testing methodologies and carry out scientific research.

GII’s punch line is PIONEERS-LEADERS-INNOVATORS, and I am proud to be associated with GII. I express my gratitude to the members of the Trust Board and the employees of GII whose dedicated, proficient and consistent performance are upholding the punch line.

I would like to express my earnest appreciation to all the trade members for having reposed their trust and confidence upon GII to upkeep customer’s confidence and collective growth. I assure you that I will make all efforts to take the Institute to the next level. I assure that the flag of GII will fly high with your support and suggestions. We ‘Trustees’ help to implement the vision of GII as a whole.”

Shri Anoop Mehta,
Chairman -GII

Anoop Mehta 1a

A world-class education and laboratory testing services

Research & Development

GII may be better known in the industry for its work in the field of certification, but its activity as a Research & Development (R&D) centre in gemmology has been no less significant.

Know About Gems

Nine stones representing the planetary system is widely used in India for astrological purposes. People from all walks of life ranging from film stars from Bollywood to a daily wage earner in a factory or in an agriculture field have always shown fancy and faith in Navagraha stones.


Our History

The Gemmological Institute of India (GII) was established under the aegis of the Gem & Jewellery Exporters’ Association, Mumbai. The institute is registered as a non-profit Public Charitable Trust.


What We Provide

The first Gem Testing Laboratory established in India for identification and certification of Natural, Synthetics and all types of treatments done on Gemstones.


    GII is the most progressive and trusted institute in India with a rock solid credibility which is proving enough for diamond graders to use GII’s diamond grading reports as bench marks.


    In the year 1971, for the first time, the seed of Gemmology was sown in the country by the Gemmological Institute of India and today GII is proud to state that the courses offered by the institute are at par with any such courses offered elsewhere in the world.


    The Diamond Detection Resource Center (DDRC) is a shining example of how the GII has advanced with the times, keeping pace with contemporary technological developments and the challenges they have raised for the industry.


    GII conducts ON-SITE jewellery grading for interested clients, provided the minimum criteria is fulfilled. For minimum criteria information kindly join the chat with our Customer Service Representative.

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Lab Grown Diamond Detection Machine,

D-Vision Pro

Features :

1. D-Vision pro has the ability to identify lab grown diamonds like CVD/HPHT and non diamonds, in the range from 0.001 carat to large.
2. Scanning of loose diamonds as well as various types of jewellery in 30 seconds.
3. Diamond colour range from D to K can be tested.
4. D-Vision pro offers a scanning area of 160X120mm.

For Further Enquiry :


Cases of Success

Brazilia D’souza

I head Retail Operation for TBZ Nirmal Zaveri and needless to say it is the most trusted name when it comes to diamonds! Therefore for someone like me, who came from a very different professional background , it would only be fair to understand diamonds in order to impart & extend the correct knowledge to both my customers and my team. That’s when GII came into play. This ( Short term Diamond grading) not only educated me but also enhanced my confidence professionally .It helped me understand the core qualities of diamond and the ability to confidently grade one. This course is opt for beginner like me as the training team very gradually and effectively introduces you to a whole new perspective , eventually leading you to learn why “A diamond is a woman’s best friend”

Harshit Soni

I am so glad that I joined Diploma in Gemology from Gemological Institute of India (GII) . It has given a new direction to my life and is very helpful for my Carries. The Institute has good experienced and good teachers who are always willing to help . The institute has a learning environment with best laboratory. The Infrastructure of the institute is also good. My overall experience at institute is astonishing. I believe this place is stepping stone to success. I will love to suggest about the institute who wish to aspire their carrier in Gems and Diamonds


Sonia Bharat Kumar

It has been a very good experience doing my gemology course here at GII. It has opened world of gems to me. With experienced teachers & Personal attention that all got , it encouraged us to learn & do better


Pulok Bhattacharjee

GII is one of the most leading Institute in whole world which provides world standard education and Laboratory services. My career started became of studying at GII. Hence all the faculties are not only teach the students but also guide to choose the Career. I have enjoyed the days while I was learning at GII.
My hearties thanks to GII which has given direction to my life

Proprietor Gems Eye

Colin Shah

I come from a family of Doctors. GII gave me that foundation and the confidence to enter into the jewellery industry. I highly recommend the newly designed short term courses in diamonds, rough diamonds and Gemmology

Managing Director, Kama Schachter

Sashank Shende

GII is a place I recommend to anyone to learn crash as well as comprehensive course on ROUGH DIAMOND ASSORTING . GII made me a sparkling Diamond. I am grateful to GII for giving me the immense knowledge of rough Diamonds which is my strength and strong point of my success and adding one more feather in my career cap


Advocate Pankaj Bafna

GII is the best institute having a personalized environment and faculties like family members. Also training is given with the latest technology based equipments and very well known across the globe and the trade

Bafna Jewellers, Bafna & Sons Jewellers, Rushabh Jewellers Bafna Law Associates

Sachin Kumar Verma

The institute GII is one of the finest in the country with the best faculties. Mr. Ramchandran’s able guidance has taken it to a whole new level. Kudos to K.T. Ramachandran sir for the commendable job

M/S Satya Jewellers, Shimla

Nipun Umakant Pandya

Through Research and Education GII protect the Gems & Jewellery market by setting Global standard. Its breakthrough research help in understanding of gemstones.
The faulty members are very much knowledgeable and helping nature. They are very inspiring and motivating.

If you like gemstones this is the place to learn from . My source of education made me professional always respected

Umakant Pandya & Co., Mumbai

Naveen Gupta

GII is a professional institute where Gemmology is taught in a family-like atmosphere. Professionalism coupled with traditional experience in Gemstones. Science and technology are taught with market experience. GII allows you to deal in markets of Gemstones anywhere in the world. GII is a school of business and I am proud to be educated here

Ramnarain & Co., Mumbai

Tejas Shahsikant Mehta

Being associated with Gemmological Institute of India (GII) has been one of the most enriching experience of my life. GII has not only provided in depth knowledge of gemstones and diamonds but also expanded my vision in this trade. GII has flourished under the able guidance of Mr. Ramchandran and the faculty and staff has always been very co-operative

Miracle Gems, Mumbai

Amit Sathe

Gemmological Institute of India has made a huge contribution to where I am in life today. The institute helped me a great deal to imbibe and inculcate a scientific temper towards the study of gemmology, whereas in a country like India, gemstones have always had an astrological element associated to them, rather than their aesthetics. Our teachers not only imparted the necessary knowledge but also reminded us time and again the importance of ethical practices, which resulted in them being engraved in my mind forever

Sathe Jewellers, Nagpur

Tejendra Patel

There are only few Institutes in the world that have the capacity to give its students the learning and exposure on Gemstones that GII has given me. I am immensely grateful to GII for bringing out the vast potential in me and to become successful in my Gems & Jewellery business

Utshav Jewels, Mumbai

Binit R. Bhatt

GII has definitely evolved since my days in the early 90’s as it has always followed a progressive philosophy. My heartfelt thanks go to the GII board and especially to Ramchandran Sir for making GII what it is today and also making he lives of thousands of students and ex-students like me more equipped and dynamic to meet the demands of the industry through education and guidance.

Gems & Jewellery Skill Council of Inida (GJSCI)

Vinit Joshi

GII is like Gem Factory. Stones like us came here and the teachers faceted and polished us by sharing their knowledge and experiences and we turned from ordinary stones to Precious Gems. The knowledge that we got in the institute is value-added for us and it’s really helpful not only for business purposes but to stand in the competitive market also. I feel proud that I am connected with the GII.

Thank you very much for giving me opportunity to share my gratitude towards GII.

Joshi Bandhu Gems & Jewellery (Jalgaon)

Dilip M. Lagu

I was the first member of our family to undergo formal training in Gemology though our family business was more than 50 years old then I was fortunate to have attended the gemmology course of GII in 1984. I gained a lot of insight and knowledge which eliminated a lot of misconceptions about gemstones. As a member of the Forum of Indian Gemologists, I have always been able to keep my knowledge updated.

Lagu Bandhu Motiwale Pvt. Ltd . Mumbai, Thane, Dombivali, Pune (Kothrud & Aundh), Panji,



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Our Events & Media

Theme meeting on Nuclear Probes for Materials, Medicine and Industry (NPMMI-2024)

Report on participation in the Theme meeting cum Conference on Nuclear Probes for Materials...


GII received a renewal for three more years from 01.04.2024 to 31.03.2027, from Govt. of India GII...

GII presented R&D work in two International Conferences during July 2023

1) 7th International Conference on Luminescence and Applications (ICLA-2023) was held during July...

Board of Trustees & Employees of Gemmological Institute of India congratulate its chairman.

Shri Anoopbhai Mehta on his receivingLifetime achievement award, by GJEPC 49th IGJ Awards, 2023...

GII celebrates its 52nd Anniversary

Gemmological Institute of India, GII has completed its 52nd year on 12th April 2023. It was...

The first Research & Development Laboratory in the field of Gemstones in India recognized by the Department of Science & Technology, Government of India as SIRO.

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