Indian Diamond Institute

What Indian Diamond Institute does

Indian Diamond Institute (IDI) is a not-for-profit educational institution and gemmological testing laboratory established in 1978 in Surat, Gujarat — India's — and the world's — largest diamond manufacturing cluster. It is registered as a Society under the Societies Registration Act, 1860 and as a Trust under the Bombay Public Trust Act, 1950, is sponsored by the Ministry of Commerce & Industry, Government of India, and operates as a project of the Gem & Jewellery Export Promotion Council (GJEPC). The institute is also designated 'Centre of Excellence' by the Government of Gujarat and 'Anchor Institute' for the Gems & Jewellery sector by the Industries Commissionerate.

IDI delivers three integrated lines of business. First, structured education and training: certificate, diploma, graduate diploma, and B.Sc. programmes covering diamond manufacturing, sorting, planning, polishing, and grading; jewellery designing (manual and CAD with Jewel CAD, I-Deas, Rhinos, Matrix) and manufacturing; and gemmology. Delivery channels include on-campus instruction at the Katargam and Vesu campuses in Surat (~100,000 sq.ft. built-up area combined), off-campus extension programmes in 12+ Indian cities, a home study programme with practical residency, and a foreign-national track. Second, gemmological laboratory services: diamond reports (natural and lab-grown grading, melee packet certification), jewellery reports (quality and XRF gold-purity analysis), and gemstone reports, operated on a no-profit-no-loss basis through IDI-GTL and the new IDI-DDRC synthetic-diamond detection centre launched with GJEPC. Third, scientific R&D recognised by the Ministry of Science and Technology as a SIRO since 2009. The institute has trained more than 32,000 on-campus students, 3,000+ supervisors/managers, 2,000+ jewellers, ~335-378 Central Excise & Customs officials, and ~120 foreign nationals from over a dozen countries.

Revenue is generated primarily through course fees (Rs.5,000-1,08,450 domestic; US $2,100-$3,400 international; no capitation fee), laboratory certification charges, government-sponsored skilling programmes, and likely central/state grants via GJEPC and the sponsoring ministry. Customers span individual students and job-seekers, jewellery manufacturers and traders, customs and excise officials, and international trainees. Pricing is set materially below private competitors and the institute is structurally dependent on its government sponsorship for regulatory standing (DGFT-authorized laboratory under FTP 2015-2020), brand credibility, and likely a meaningful portion of operating support.

Name

Indian Diamond Institute

Legal name

Indian Diamond Institute

Website

https://diamondinstitute.net

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

11–50 employees

Short description

Indian Diamond Institute (IDI) is a not-for-profit, government-sponsored education and gemmological testing laboratory in Surat, India, training students and trade professionals in diamond manufacturing, grading, jewellery design, and gemmology across two campuses, while certifying diamonds, gemstones, and jewellery.

Ownership category

akta.pro rank

Product category

Vocational Gem & Jewellery Education and Gemmological Laboratory Services

NAICS

Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Diamond Grading & Certification Laboratories (CRAKAJAG)

akta.pro secondary industries

Colored Gemstone Identification & Certification Laboratories (CRAKAJAH), Synthetic/Lab-Grown Diamonds & Gemstones (Manufacturing & Trading) (CRAKAJAM)

Keywords

• Gemmological laboratory services
• Diamond grading certification
• Jewellery design training
• Diamond manufacturing courses
• Professional gemmology education

Headquarters

HQ city

Surat

HQ country

India

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Others

Revenue model

1. Educational & Training Programmes: IDI generates revenue through course fees for its educational programmes covering Diamond Manufacturing, Diamond Grading, Jewellery Designing, Jewellery Manufacturing, Assaying of Gold Jewellery, and Gemmology. Programmes range from certificate courses to graduate diplomas and bachelor's degrees. Fees are structured with and without hostel options, and for foreign nationals at higher rates.
2. Gemmological Laboratory Services: IDI operates gem testing laboratories providing Diamond Reports (grading, screening, identification), Jewellery Reports (quality reports, gold purity analysis), and Gemstone Reports. Services are offered on no profit no loss basis for the benefit of customers including laymen as well as G&J Trade.
3. Certification Services: IDI provides certification services for diamonds, coloured stones, gold jewellery purity. It is the only Gem Lab in India to certify pearls and synthetic diamonds. Also authorized laboratory for Diamond Grading & Certification by DGFT, MoC&I, Govt. of India.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Indian Diamond Institute provides professional education and training programmes (certificate to bachelor's degree level) in diamond manufacturing, diamond grading, jewellery designing, jewellery manufacturing, gemmology, and gold assaying, delivered across two Surat campuses and through extension/off-campus programmes across India and home study. It also operates the IDI-Gemmological Testing Laboratory (IDI-GTL) providing Diamond Reports, Jewellery Reports and Gemstone Reports for certification and quality assurance, plus the IDI-Diamond Detection & Resource Centre (IDI-DDRC) for synthetic diamond screening, all on a no-profit-no-loss basis.

Product overview

Indian Diamond Institute (IDI) operates as a not-for-profit educational institute and gem testing laboratory sponsored by Ministry of Commerce & Industry, Government of India. The institution offers a comprehensive portfolio comprising three core pillars: (1) Gemmological Laboratory Services including Diamond Reports, Jewellery Reports, and Gemstone Reports for certification and quality assurance; (2) Educational and Training Programs covering Diamond Courses, Jewellery Courses, and Gemmology Courses at certificate, diploma, graduate diploma, and bachelor levels; and (3) Research & Development Services for the gems and jewellery industry. The institute operates two campuses in Surat, India, and provides its services on a no-profit-no-loss basis for customers ranging from individual laypersons to trade professionals.

Differentiator

Problem solved

Functional benefit

Products and services

• Diamond Courses Professional and certificate programmes in diamond manufacturing, grading, sorting, planning, and polishing offered by IDI, covering both manual and computerized techniques including Laser 4P. Programmes range from short certificate courses (e.g., Diamond Polishing, 4 weeks) to the Professional Diamond Manufacture/Grader diplomas (20-24 weeks). Designed for students and industry professionals entering or upskilling in the diamond sector.

Quantifiable outcome

• Successfully trained more than 32,000 students on campus since inception
• +4 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered minor and core.

• SJMA (Suvalaxmi Jewellery Manufacturers Association)minorStrategic or Co-development Partner · 1 November 2025IDI signed an MoU with SJMA in November 2025 for collaboration in jewellery training and certification programmes. The partnership aims to promote jewellery industry standards and training.
• Gem & Jewellery Export Promotion Council (GJEPC)coreStrategic or Co-development PartnerIDI is a project of GJEPC under the Ministry of Commerce & Industry, Government of India. GJEPC sponsors IDI and provides institutional support. IDI operates Diamond Detection & Resource Centre (IDI-DDRC) in joint association with GJEPC for synthetic diamond screening.
• Ministry of Commerce & Industry, Government of IndiacoreOthersIDI is sponsored by Ministry of Commerce & Industry, Government of India. The ministry provides governmental support and recognition.
• Kaushalya Skill UniversityminorStrategic or Co-development PartnerIDI is affiliated with Kaushalya Skill University for its B.Sc. programme in Jewellery Designing & Manufacturing, enabling students to earn a bachelor's degree.
• Industries Commissionerate, Government of GujaratcoreOthersIDI is promoted as 'Anchor Institute' for Gems & Jewellery Sector by Industries Commissionerate, Government of Gujarat, providing state government recognition and support.

Scale indicators10 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Gemological Institute of America (GIA): GIA is the world's leading gemological training and certification institute, offering diamond grading, gem identification, and jewellery education programmes globally. It is a direct peer to IDI in curriculum, lab services, and target audience (gem & jewellery trade professionals), but operates at vastly larger global scale with multiple international campuses.
• GIA India Laboratory (subsidiary): GIA India is the Indian operations of GIA, providing diamond grading and education programmes in India. It is a direct competitor of IDI in the domestic Indian market for both grading reports and gemmology/diamond education programmes.

Direct peers

• European Gemological Laboratory (EGL): EGL operates a network of gemological laboratories providing diamond grading and certification reports internationally. It is a direct peer to IDI in diamond grading and certification services with overlapping trade customer base.
• International Gemological Institute (IGI): IGI is a globally active gemological institute offering diamond, coloured stone, and jewellery training as well as grading reports. It directly competes with IDI in India and internationally for both education students and trade certification, with similar breadth across diamonds, gemstones, and jewellery.
• SSEF Swiss Gemmological Institute: SSEF is a Swiss-based gem testing laboratory that also provides gemmological education and training. It is a direct peer to IDI-GTL in coloured gemstone and diamond identification services, particularly relevant given IDI's coloured gemstone report offering.
• AIGS (Asian Institute of Gemological Sciences): AIGS is a Bangkok-based gemological institute offering gem identification, diamond grading, and jewellery courses. It is a direct peer to IDI in Asia for both training and lab services, with similar positioning around coloured gemstones and regional trade customers.
• Gem-A (Gemmological Association of Great Britain): Gem-A is a UK-based gemmological training and membership body offering diploma and certificate courses in gemmology and diamond grading. It is a direct peer to IDI in gemmology education with a long-established curriculum (Gem-A Diploma) widely recognized in the international trade.
• HRD Antwerp: HRD Antwerp is a Belgian-based diamond grading and education institute offering professional training programmes and diamond certification. It is a direct peer to IDI in the diamond grading/education segment with overlapping curriculum and a shared customer base in the diamond trade.

Regional players

• Gem Testing Laboratory Jaipur (GTLJ): GTLJ is an Indian gem testing laboratory based in Jaipur providing diamond and coloured gemstone identification and grading reports. It is a regional peer to IDI-GTL serving the Indian trade, with comparable lab services but located in a different Indian gem hub (Jaipur vs Surat).
• Pebris International / Indian Institute of Gems and Jewellery: IIGJ is an Indian institute (sponsored by GJEPC) offering training in gems and jewellery design, manufacturing, and gemmology. It is a regional peer to IDI operating in the same GJEPC-affiliated ecosystem with comparable certificate and diploma programmes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/idisurat
• Facebookfacebook.com/diamondinstitute.net
• LinkedInlinkedin.com/company/indian-diamond-institute

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Indian Diamond Institute