International Standards
Reports accepted worldwide by leading industries and institutions.
IIGL — Institute of International Gemological Laboratory: Gemstone, Diamond and Jewellery Certification
Why Choose IIGL?
Excellence in Gemology,Trust in Every Report
Our Report Categories
DIAMOND JEWELLERY
GEMS STONE
RUDRAKSHA
Antic goods
Report Types
What's commonly called a ‘certificate’ is actually a grading report. IIGL issues a wide variety of reports, grading and authenticating loose diamonds, gemstones, and finished jewelry around the world.
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IIGL Education
Your Journey to Excellence Starts Here
Enroll in expert-led gemology courses designed to elevate your knowledge, advance your skills, and build a successful career.
World-Class Learning
Access top-rated gemology courses curated by industry experts.
Expert Instructors
Learn from experienced professionals and practitioners.
Wide Range of Topics
Explore diamonds, gemstones, grading, and laboratory standards.
Industry Certifications
Build confidence with programs aligned to global standards.
IIGL Education
Available Courses
Explore expert-led courses designed to build your knowledge and skills in gemology, diamonds and jewellery.
IIGL BASIC GEMSTONE COURSE
4 Days Theory + 1 Day Practical | Online / Offline
1 WeekBeginner
IIGL NAVRATN COURSE Course
Type: Gemstone Knowledge & Identification Programme Duration: 1 Month Training Days: 20 Days Practical Training: 4 Dedicated Practical Training Days Mode: Online / Offline Eligibility: Open to All
1 Month28 LessonsCertification
Gems Stone, Diamond jewellery, Advance Knowledge. Know
Course Name: IIGL Workshop Certificate, Course Duration: 2 Weeks Practical Training: 2 Days Mode: Online / Offline Eligibility: Open to All Course
2 Week20 LessonsAdvanced
IIGL-Graduate in Diploma
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2 months25 Lessons
Our Reviews
What Our Clients Say
What’s commonly called a ‘certificate’ is actually a grading report. IIGL issues grading reports with clarity and confidence.
Shriyanka Paul
Accountant
Excellent ruby testing service at IIGL Gemological Laboratory, Kolkata. The testing was professional, detailed, and clearly explained. Highly recommended for reliable gemstone identification and certification, thanks, a millions
Debjyoti Dey Roy
Teacher
In todays filthy world of search of authenticity,satisfaction and genuinity of gemstones I found solace,sanguinity,purity confirmation & confidence upon getting my costly diamond,pokraj testing done from this esteemed institution where i felt proud of my costly possession upon meagre cost of testing charges.
Goldy
Business
Very good experience with customer care team , excellent study courses for all ... 100 % Satisfied with iigl
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FAQ
Frequently Asked Questions
Find answers to the most common questions about our grading reports and services.
IIGL’s grading report is a detailed assessment of a gemstone’s quality based on internationally accepted standards. It includes accurate grading parameters to help you make confident decisions.
Still have questions? Contact our support team.
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