Gemmological Institute of India

What Gemmological Institute of India does

Gemmological Institute of India (GII), established in 1971 in Mumbai, is a Non-Profit Public Charitable Trust operating under the aegis of the Gem & Jewellery Exporters' Association (GJEA). It is positioned as India's first and only full-fledged Research & Development laboratory in gemstones, and is recognized as a SIRO Laboratory by the Department of Scientific & Industrial Research, Ministry of Science and Technology, Government of India. GII holds NABL accreditation, is ISO 17025-compliant, and employs 11-50 staff across its Mumbai headquarters and branch offices in Pune (December 2024) and Coimbatore (via MoA signed 2 February 2026 with Jewellers Institute).

The institute operates two interlinked lines of business. The laboratory division provides diamond grading and 4Cs assessment, colour stone identification and certification, geographical origin determination, grading of diamond-studded jewellery (including onsite via a mobile lab), and lab-grown diamond detection using the proprietary D-Vision Pro machine, which scans loose diamonds and jewellery in 30 seconds across a 0.001 carat to large-stone range and a D-to-K color window. The Diamond Detection Resource Center (DDRC) tracks evolving CVD/HPHT synthesis methods. The education division delivers a Diploma in Gemmology (D.G.), Diploma in Diamond Grading (D.D.), short-term courses, distance education, and e-learning, with the next diploma cohorts scheduled to begin 18 August 2026. GII has tested over 100,000 gemstones and served 20,000+ customers, training thousands of professional gemmologists who now hold industry leadership positions.

GII's revenue model is service-based, with transaction fees on laboratory testing and certification, course fees on diploma and short-term programs, and onsite testing fees for mobile lab engagements. Pricing is not publicly disclosed. The go-to-market is sales-led and trade-anchored, leveraging its position within GJEA and its regulatory accreditations to access gem traders, jewellery manufacturers and retailers, and aspiring gemmology professionals. No external venture or institutional funding has been disclosed; the firm is self-funded through its service revenues and is governed by a Board of Trustees chaired by Mehul N Shah.

Name

Gemmological Institute of India

Legal name

Gemmological Institute of India

Website

https://giionline.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

11–50 employees

Short description

Gemmological Institute of India (GII) is a Mumbai-based, NABL-accredited and SIRO-recognized non-profit trust that provides diamond grading, gemstone identification, lab-grown diamond detection, and professional gemmology education to India's gems and jewellery trade.

Ownership category

akta.pro rank

Product category

Gem Testing and Certification Services

NAICS

Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Diamond Grading & Certification Laboratories (CRAKAJAG)

akta.pro secondary industries

Colored Gemstone Identification & Certification Laboratories (CRAKAJAH), Traceability, Provenance & Compliance Services (e.g., origin, AML/KYC, sanctions) (CRAKAJAL)

Keywords

• Gem testing services
• Diamond grading certification
• Gemmology education
• Gemstone authentication
• Lab-grown diamond detection

Headquarters

HQ city

Mumbai

HQ country

India

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Laboratory Testing and Certification Services: Diamond grading, gem authentication, treatment detection, and certification services for natural, synthetic, and treated gemstones. Provides colour stone identification, geographical origin determination, and grading of diamond studded jewellery.
2. Education Programs: Diploma in Gemmology, Diploma in Diamond Grading, and short-term courses for professional development in gemmology. Also offers distance education and e-learning options.
3. Onsite Testing Services: Mobile lab services for onsite jewellery grading at client locations when minimum criteria are fulfilled.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Core offering

GII operates a gem testing laboratory providing diamond grading (4Cs), colour stone identification, treatment detection, geographical origin determination, and lab-grown diamond screening (D-Vision Pro), as well as onsite mobile jewellery testing services. The institute also delivers professional gemmology education through Diploma in Gemmology, Diploma in Diamond Grading, short-term courses, distance education, and e-learning programs for industry professionals and aspiring gemmologists.

Product overview

Gemmological Institute of India (GII) operates as India's premier gem testing laboratory and education center, offering a comprehensive portfolio of laboratory testing services and professional education programs. The core offerings include diamond grading and certification services, gemstone identification and treatment detection, lab-grown diamond testing (D-Vision Pro technology), and onsite jewellery testing via mobile lab. Education services span diploma programs (Diploma in Gemmology, Diploma in Diamond Grading), short-term courses, distance education, and e-learning platforms. The institute combines world-class education in gemmology with cutting-edge research facilities, serving as the first and only full-fledged R&D laboratory in gemstones in India.

Differentiator

Problem solved

Functional benefit

Products and services

• Diamond Grading and Certification Primary laboratory service providing accurate 4Cs assessment (Carat, Cut, Color, Clarity) for diamond grading reports, serving as industry benchmarks for diamond graders and the gem trade.
• Colour Stone Identification and Certification Gemstone identification and certification service for natural and synthetic stones, including detection of all types of treatments performed on gemstones. Offered as single or bulk testing reports.
• Lab Grown Diamond Testing (D-Vision Pro) Detection of lab-grown diamonds including CVD/HPHT methods and non-diamond materials, with scanning capability from 0.001 carats to large stones, color range D to K, and 160x120mm scanning area; scans loose diamonds and jewellery in 30 seconds.
• Geographical Origin Determination Service for determining the geographical origin of gemstones, helping verify provenance and authenticity of coloured stones.
• Grading of Diamond Studded Jewellery Laboratory grading service for diamond-studded jewellery pieces, assessing the diamonds set in finished jewellery.
• Onsite Testing (Mobile Lab) On-site jewellery grading service conducted via a mobile laboratory at client locations, subject to minimum criteria requirements, enabling grading without transporting inventory to GII's main facility.
• Diploma in Gemmology Course (D.G) Professional diploma program in gemmology providing comprehensive training in gemstone identification and evaluation for individuals seeking credentials in gemmology.
• Diploma in Diamond Grading (D.D) Professional diploma program in diamond grading providing training aligned with international standards for individuals seeking credentials in diamond grading.
• Short Term Courses Short-term professional courses in gemmology and diamond grading for industry professionals and beginners, including crash and comprehensive courses on rough diamond assorting.
• Distance Education Remote learning option for gemmology education, providing flexibility for students unable to attend in-person classes at GII's facilities.
• E-Learning Online learning platform for gemmology courses and educational content delivery, accessible to remote learners.

Quantifiable outcome

• 100,000+ gemstones tested with industry-leading accuracy
• +1 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Jewellers Institute, CoimbatorecoreStrategic or Co-development Partner · 2 February 2026GII Mumbai signed a landmark MoA with Jewellers Institute, Coimbatore on February 2, 2026. This partnership expands GII's educational reach and establishes a presence in Coimbatore through the partner institute.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Gemological Institute of America (GIA): GIA is the world's foremost gem grading and education institute, offering 4Cs diamond reports and the GIA Graduate Gemologist diploma. It is the most direct global competitor to GII and the benchmark certification brand for international diamond trade.
• International Gemological Institute (IGI): IGI is a leading global gem grading laboratory with strong presence in India, Antwerp, and Asia. It competes head-on with GII in diamond and jewellery grading reports for the Indian trade and retail markets.
• HRD Antwerp: HRD Antwerp is a European gem lab offering diamond grading and gemmology education. It is a direct peer competing for cross-border certification business that the Indian gem trade requires for export.
• Gübelin Gem Lab: Gübelin is a premium Swiss gem lab specializing in coloured gemstone identification, origin determination, and treatment detection. It overlaps with GII's colour stone and origin-determination services, especially for high-value gems.
• SSEF Swiss Gemmological Institute: SSEF is a Swiss lab providing independent gemstone testing and origin reports. Comparable to GII in coloured gemstone certification and gemmology research, with strong brand in the high-end gemstone auction market.
• Indian Institute of Gems and Jewellery (IIGJ): IIGJ, run by GJEPC, offers gemmology and jewellery design education in India. It is a direct peer to GII's diploma and short-term courses and competes for the same pool of aspiring Indian gemmology professionals.
• GIA India Laboratory (Surat): GIA's Indian operations in Surat and Mumbai directly compete with GII for diamond grading of Indian-cut stones. It is the most aggressive direct peer on GII's home turf for export-oriented diamond manufacturers.

Regional players

• National Gemstone Testing Center (NGTC, China): NGTC is China's state-backed gem testing and grading authority with nationwide labs. It is a regional peer in Asia competing for cross-border certification business and serves as a model of a government-backed gem lab.
• Diamond Certification Laboratory of Australia (DCLA): DCLA is an Australian diamond grading lab offering certification services to the local jewellery trade. It is a regional peer with a comparable focus on third-party diamond grading and consumer confidence.

Broad incumbents

• American Gem Society (AGS) Laboratories: AGS operates a respected diamond grading lab alongside broader jeweller trade body functions. It is a broad incumbent comparable to GII in providing 4Cs diamond reports while also running industry credentials.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gemforumgii
• YouTubeyoutube.com/@giigemmologicalinstituteof5594
• Facebookfacebook.com/gemmologicalInstituteofindia1971
• Instagraminstagram.com/gii_1971/?hl=en
• LinkedInlinkedin.com/company/gemmological-institute-of-india

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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M&A

Investments

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

Frequently asked questions about Gemmological Institute of India