Constell Group

What Constell Group does

Constell Group is a privately-held diamond industry services provider headquartered in Mauritius, with operational origins in Worldwide Diamond Manufacturers (WDM) established in 1997 in Visakhapatnam, India. The company operates a network of nine specialized subsidiaries (WDM, WSDM, WDS, WDJM, WDM-B, WCDS, DMMC, Constell Asia, Constell America Corp.) spanning India, Botswana, the UAE, the United States, and Mauritius, with reach extending across 11+ countries covering the full diamond pipeline from mining to retail. Its core offerings include diamond cutting and polishing, rough and polished diamond sorting and valuation, lab-grown diamond processing, jewellery manufacturing, operations management consultancy, turnkey facility setup, contract manufacturing services, and industry training.

The company serves mining companies, diamond manufacturers, trading firms, retail and jewellery businesses, and the lab-grown diamond industry through a B2B professional services model delivered via direct enterprise relationships and regional subsidiary networks. Its technology stack combines traditional diamond processing expertise with specialized capabilities including solar-powered manufacturing (WDM-B in Botswana, the first in the country's diamond sector), and AI-integrated high-speed automatic rough sorting (WCDS in Dubai, launched 2024). Operational scale includes the world's largest independent rough diamond sorting entity processing approximately 750,000 rough carats per month and a direct workforce exceeding 2,800 employees across specialized divisions.

Constell Group generates revenue through professional services and contract-based engagements with no publicly disclosed pricing. Revenue streams are diversified across consultancy services, cutting and polishing contract work, sorting services, turnkey solutions, jewellery manufacturing, and training. The company holds ISO 9001:2015 quality management certification across WDM, WDS, and WDJM, and Responsible Jewellery Council (RJC) certification across WDM, WDS, WDM-B, and WSDM, positioning it to serve ethically-sourced diamond supply chains. The leadership team includes Meir Boukris as Executive Chairman and Carlos Fernandes as CEO, with family ties among executive leadership suggesting private, family-influenced ownership.

Name

Constell Group

Legal name

Constell Group

Website

https://constellgroup.com

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Constell Group is a privately-held Mauritius-headquartered diamond industry services provider operating nine subsidiaries across 11+ countries, delivering cutting, polishing, sorting, jewellery manufacturing, consultancy, and turnkey facility services to mining, manufacturing, trading, and retail clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Port Louis

HQ country

Mauritius

HQ region

Africa

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Operations Management Services: Expert advice and collaboration with businesses looking to establish themselves in the diamond industry, including business strategies, capital investment guidance, and operational setup.
2. Cutting and Polishing Services: Diamond cutting and polishing contract work services across various sizes from 0.25 carats to 5+ carats, including rough-to-polished and polished-to-recut processes.
3. Sorting Services: Contract sorting (rough and polished) to polishing and mining companies and retailers. WDS sorts approximately 750,000 rough carats per month.
4. Consultancy Services: Strategic consultancy for establishing diamond jewellery manufacturing units, including production management, capital planning, and operational guidance.
5. Contract Work Services: Professional contract work services to participants across the entire diamond pipeline from governments, industry bodies, miners, manufacturers, and traders through to jewelers and retailers.
6. Turn-key Solutions: Setting up state-of-the-art diamond grading facilities including laboratory setup, staff recruitment, management and operation.

Go-to-market motion3 records

Distribution channels2 records

Marketing channels3 records

Core offering

Constell Group provides tailor-made professional services to the diamond industry, including diamond cutting and polishing, rough and polished diamond sorting and valuation, jewellery manufacturing, turn-key facility setup, operations management, contract work, consultancy, and training. The company serves clients across the entire diamond pipeline from governments, miners, and manufacturers through traders and retailers, delivering solutions through a global network of subsidiaries spanning 11 countries.

Product overview

Constell Group provides a comprehensive suite of services for the diamond industry, operating as a unified platform of eight core service offerings (Operations Management, Cutting and Polishing, Sorting Services, Turn-key Solutions, Consultancy Services, Contract Work Services, Jewellery Manufacturing, and Training Services) supported by nine network entities and subsidiaries. The company, originating from Worldwide Diamond Manufacturers (WDM) established in 1997, serves clients across the entire diamond pipeline from mining through retail. The network includes specialized divisions: WSDM (small diamond manufacturing in India), WDM (diamond cutting/polishing in India), WDS (diamond sorting in India), WDJM (lab grown diamonds in India), WDM-B (diamond manufacturing in Botswana), WCDS (AI-powered rough sorting in Dubai), DMMC (management consultancy), Constell Asia (legal/operations consultancy), and Constell America Corp. (US market services). The company leverages 25+ years of industry experience to offer tailored solutions for mining, manufacturing, R&D, trading, retail, and jewellery sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Operations Management Advisory and collaborative services for businesses looking to establish themselves in the diamond industry, including guidance on business strategies, capital investment, infrastructure setup, and real-time business solutions.
• Cutting and Polishing Expert guidance and support for establishing diamond cutting and polishing businesses, including market understanding, sourcing, tools, and skilled staff recruitment. Processes include AGS000+H&A, GIA 3EX/HRD 3EX, GIA VG/HRD VG, GIA GD/HRD GD, and Commercial make.
• Sorting Services Contract sorting services for rough and polished diamonds, serving polishing and mining companies and retailers. The sorting division is the world's largest independent sorting entity with a 300-person workforce providing sorting and valuation services.
• Turn-key Solutions Assistance in setting up state-of-the-art diamond grading facilities, including grading knowledge, skill, expertise, tools, equipment, qualified gemologists, and diamond graders.
• Consultancy Services Strategic consultancy services for establishing diamond jewellery manufacturing units, with expertise in production management, capital planning, and tailor-made solutions for the diamond industry.
• Contract Work Services Professional contract work services across the entire diamond pipeline, from governments and miners through to jewelers and retailers, with 25 years of experience.
• Jewellery Manufacturing Diamond jewellery manufacturing and management consultancy services with manufacturing software solutions for establishing businesses in the jewellery sector.
• Training Services Training need analysis and workforce guidance services for the diamond industry, leveraging 25 years of setting up and managing different operations.
• WCDS High-Speed Automatic Rough Sorting High-speed automatic rough sorting services delivered from Dubai utilizing cutting-edge AI learning software integrated with state-of-the-art equipment for rapid, accurate rough assortments.

Quantifiable outcome

• World's largest independent sorting entity with 300 people workforce
• +3 more outcomes

Segments5 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

One partnership is on record.

• Sustainable Energy Botswana (SEB)coreTechnology or IntegrationSEB designed and installed WDM-B's solar power system in Botswana. This partnership enables WDM-B to be the first diamond manufacturing company to implement solar power in Botswana, achieving 80% of monthly power consumption from renewable energy.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• ALROSA: Russian state-owned diamond mining giant with cutting and polishing subsidiaries. Represents both a potential client for Constell's sorting/polishing services and a broad incumbent with in-house manufacturing capacity.
• De Beers Group: World's leading diamond company spanning mining through retail (De Beers Jewellers, Forevermark). A major client of Constell's sorting services and a broad incumbent whose vertically integrated model competes with parts of Constell's offering.

Direct peers

• Diacore: International diamond manufacturer and trader with cutting operations in South Africa, Botswana, and India. Closely comparable to Constell's multi-geographic model including its Botswana (WDM-B) presence.
• Rosy Blue: Global diamond manufacturer and trader with offices in Antwerp, Mumbai, Dubai, and Hong Kong. Overlaps with Constell's cutting/polishing, sorting, and trading services across the same midstream pipeline.
• Venus Jewels: Vertically integrated diamond manufacturer and jewellery maker with Indian manufacturing roots and global distribution. Comparable scale and service breadth to Constell's diamond and jewellery manufacturing operations.
• Hari Krishna Exports: Top-tier Indian diamond manufacturer with thousands of employees cutting and polishing rough diamonds globally. Directly competes with Constell's WDM and WSDM subsidiaries across the same customer segments (miners, traders, retailers).
• Kiran Gems: One of the world's largest diamond manufacturers, headquartered in Mumbai, India. Kiran Gems operates large-scale diamond cutting and polishing facilities serving the same global B2B client base as Constell, with comparable export-oriented operations in SEZs.
• Dimexon Diamonds: India-headquartered diamond cutting and polishing manufacturer with operations across Africa and Asia. Competes directly with Constell's WDM/WSDM for rough diamond processing contracts.
• Shree Ramkrishna Exports (SRK): Major Indian diamond manufacturer with vertically integrated cutting, polishing, and jewellery operations. Comparable to Constell's full-pipeline service platform and competes for similar large miner and retailer contracts.
• M. Suresh & Co / Jewelex: Indian-headquartered diamond and jewellery manufacturing groups with global operations spanning manufacturing, sorting, and jewellery retail. Compete with Constell's contract work and jewellery manufacturing lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/constellgroup
• LinkedInlinkedin.com/company/constell-group-123

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries9 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 Constell Group