GDTLI

"TRUST OF AUTHENTICITY"

Gemstone/Diamond Testing, Certification & Education in Gemology and Diamonds.

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ABOUT US

Chief Gemologist
Abdul Jabbar Khan

B.Com, LLB, D.G. (London & Mumbai), FFIG.

GDTLI is setup by well known Gemologist Abdul Jabbar Khan (ex-Faculty GII), who belongs to a gem cutters family having an experience of gem cutting and teaching for more than 40 years.
GDTLI is dedicated to cater to gems & diamonds industry and to promote beginners and new aspirants to start their business in gems & diamonds. We impart practical knowledge to very small groups of 2-3 students on one on one basis. Our specialty of teaching is only with 10x lens.

40+

Years of Experience

3000+

Number of Students Worldwide

TESTING SERVICES

Opinion Slip

Opinion Slip is handwritten small slip which is issued after performing testing procedures. This slip is as good as Certificate on which anyone can rely.

Gemstone Testing Certificate
A4 Size

Certificates are computerized printed report which is issued after completing the testing procedures in detail.

Gemstone Testing Certificate
Laminated Card Size

Certificates are computerized printed report which is issued after completing the testing procedures in detail.

Diamond Testing Certificate
A4 Size

Certificates are computerized printed report which is issued after completing the testing procedures in detail.

Diamond Testing Certificate
Laminated Card Size

Certificates are computerized printed report which is issued after completing the testing procedures in detail.

Gemstone Treatment/Enhancement Certificate

Treatment/Enhancement certificates are issued after thorough study of the inclusions and internal structure to make sure whether it is a natural or enhanced one.

Gemstone Origin Certificate

Origin certificates are issued by taking utmost care and studying the internal pattern of inclusions, to the determine the origin.

GEMOLOGY / DIAMOND COURSES

Always buy a Gemstone/Diamond with a genuine Certificate.

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WHY CHOOSE US

Fast Service

Our lab provides services faster than any other lab, depending upon the specimen.

Accurate Authentic

Our results are authentic and accurate. We provide results once we are 100% satisfied.

Quality

Our results are recognized by various Traders & Organizations as 100% reliable. Our students have achieved success in Gems/Diamonds business. 

What our Custo​​mers & Students say about us

Over the years we have served the industry to give the best and authentic services. We have trained beginners from other industry and helped them to start their own business in Gems & Jewellery successfully.

Rajendra Braveheart

More than 3 decades experience, I rely on GDI for complete and confirm testing results of rare and high valued gemstones with its origin to market internationally. Diamonds are most cognified through able eyes of Jabbar bhai. His professional expertise and personal skills make us sure to gain and use moment' always.

Jay D

Gems & Diamonds Institute is a unique place where you can convert your life to an immense bundle of endless opportunities once you’re trained under Mr Jabbar Khan. Jabbar Sir has transformed many such lives over the past 2 decades and converted them to successful entrepreneurs and experts in the subject matter of Diamonds, Gemstones, Identification & Appraisals to name a few… If you’re serious to change your future, get enrolled Today!! Good Luck!

Aslam Bambotia

I am his ex student studied in GII. When he was the professor there. almost 37 years passed and I feel great pleasure while reviewing today. Educational and trustworthy laboratory. Had a very great experience.

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