Company lists · Data refreshed September 2026

Top 25 Certified diamond dealers worldwide

Name: Certified diamond dealers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 16,136 companies tracked

RevenueBase identified 16,136 company matches for certified diamond dealers worldwide as of September 2026 and tracks 184,772 professional contacts across them, including 29,666 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for certified diamond dealers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026. Country and city lists for certified diamond dealers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

16,136Companies

184,772Contacts tracked

29,666Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest certified diamond dealers worldwide

Ranked by team size

Top 25 of 16,136 company matches for certified diamond dealers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Signet Jewelers	Exact match	Akron, OH, United StatesHQ recorded Sep 19, 2026	10001+	6,690 contacts →
	Exact match “Signet operates approximately 2,600 stores primarily under the name brands of Kay Jewelers, Zales, Jared, Banter by Piercing Pagoda, Diamonds Direct, Blue Nile, Peoples Jewellers…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Kalyan Jewellers India Limited	Exact match	Thrissur, IndiaHQ recorded Sep 19, 2026	10001+	3,109 contacts →
	Exact match “Kalyan Jewellers is one of the largest jewellery retailers in India, with its headquarters in Thrissur, Kerala.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Caratlane	Exact match	Chennai, IndiaHQ recorded Sep 19, 2026	1,001-5,000	2,453 contacts →
	Exact match “CaratLane, India’s first omni-channel jewellery brand, has been redefining how people experience jewellery since its founding in 2008, by Mithun Sacheti and Srinivasa Gopalan.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Jared Jewelers	Exact match	Akron, OH, United StatesHQ recorded Sep 19, 2026	5,001-10,000	2,118 contacts →
	Exact match “Jared is redefining how luxury is felt and expressed, through unique and memorable customer experiences and an array of on-trend, high-quality 18K gold and diamond fine jewelry…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Tous Jewelry	Exact match	Manresa, SpainHQ recorded Sep 19, 2026	1,001-5,000	1,838 contacts →
	Exact match “About TOUS With more than professionals, TOUS has promoted its corporate culture based on legacy, commitment and creativity since it was set up in 1920, when it started out in the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	James Avery Artisan Jewelry	Exact match	Kerrville, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,655 contacts →
	Exact match “James Avery Jewelry offers high quality, artfully crafted jewelry in sterling silver, gold and gemstones.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Helzberg Diamonds	Exact match	North Kansas City, MO, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,599 contacts →
	Exact match “The Helzberg name stands for care and craft in every story since 1915.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Michael Hill	Exact match	Cannon Hill, AustraliaHQ recorded Sep 19, 2026	1,001-5,000	1,423 contacts →
	Exact match “At Michael Hill, we are fuelled by our passion for helping people mark life’s moments - both big and small.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Watches Of Switzerland Group PLC	Exact match	Leicester, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	1,256 contacts →
	Exact match “We're a FTSE-250 retail company employing nearly people across the UK and the United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Pt. Central Mega Kencana	Exact match	Jakarta, IndonesiaHQ recorded Sep 19, 2026	1,001-5,000	1,209 contacts →
	Exact match “Central Mega Kencana has established its presence for 50 years in the world of luxury as the biggest retail jewelry company in Southeast Asia, with over 110 stores.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	KGK Group	Exact match	Kowloon, Hong KongHQ recorded Sep 19, 2026	10001+	1,118 contacts →
	Exact match “The KGK group, established in 1905 by the Kothari family of Jaipur (India), is a global corporation with fully integrated operations in the Gems & Jewellery industry, with a…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Bucherer AG	Exact match	Lucerne, SwitzerlandHQ recorded Sep 19, 2026	1,001-5,000	1,087 contacts →
	Exact match “In businessman and entrepreneur Carl-Friedrich Bucherer opened his first watch and jewellery store in Lucerne with his wife, Luise, laying the foundation for becoming one of the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Stuller, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,061 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Kiran Gems Private Limited	Exact match	Mumbai, IndiaHQ recorded Sep 19, 2026	10001+	1,052 contacts →
	Exact match “KIRAN GEMS is the World’s Largest Manufacturer of Natural Diamonds and India’s Premier Diamantaire, establishing benchmarks not just for sheer scale of operations, but also for…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Diamonds International	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,050 contacts →
	Exact match “Diamonds International® was established over 30 years ago.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Shane CO	Exact match	Greenwood Village, CO, United StatesHQ recorded Sep 19, 2026	501-1,000	1,004 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	GIVA	Exact match	Bangalore, IndiaHQ recorded Sep 19, 2026	1,001-5,000	985 contacts →
	Exact match “GIVA is a premium jewellery brand aiming with a vision to make authentic, elegant and fine jewellery accessible in India.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Bijou Brigitte	Exact match	Hamburg, GermanyHQ recorded Sep 19, 2026	1,001-5,000	935 contacts →
	Exact match “Bijou Brigitte - Von einem kleinen Handelsunternehmen aus Hamburg zu einem internationalen, börsennotierten Konzern.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Orra Fine Jewellery	Exact match	Mumbai, IndiaHQ recorded Sep 19, 2026	1,001-5,000	919 contacts →
	Exact match “Global Pioneers in the art of jewelry and diamond perfection since ORRA's diamonds are rare, unique & responsibly sourced.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Harry Winston	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	911 contacts →
	Exact match “Harry Winston, Inc, the premier fine jewelry and watch retailer, is owned by The Swatch Group.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Effy Jewelry	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	911 contacts →
	Exact match “Established in 1979 by renowned jewelry designer Effy Hematian, Effy Jewelry is one of the most critically acclaimed and highly visible jewelry lines available in 2600 retail…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Hstern	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 19, 2026	1,001-5,000	886 contacts →
	Exact match “Com 80 anos de história, a HStern é reconhecida mundialmente pelos conceitos criativos, iniciativas pioneiras e qualidade tradicional de suas joias.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Blue Nile	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	858 contacts →
	Exact match “Blue Nile was founded in with the idea that the diamond and engagement ring business was ready for innovation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Brilliant Earth	Exact match	San Francisco, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	846 contacts →
	Exact match “Brilliant Earth was founded by Beth Gerstein and Eric Grossberg as a response to the lack of transparency and irresponsible mining practices that confront the jewelry industry…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	GRT Jewellers India Private Limited	Exact match	Chennai, IndiaHQ recorded Sep 19, 2026	10001+	840 contacts →
	Exact match “Founded in 1964, GRT Jewellers is one of India's leading jewellery destinations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “certified diamond dealers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 16,136 certified diamond dealers worldwide

See the full list, filter by size, metro and specialty, and access 29,666 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Certified diamond dealers worldwide at a glance

As of Sep 19, 2026

16.1%Verified-email coverage

11.5Average contacts per company

1-10Median size (employees)

4.3%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

9,171

11-50

4,318

51-200

1,456

201-500

523

501-1,000

218

1,001-5,000

178

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for certified diamond dealers are linked below.
What qualifies: Company records worldwide whose business descriptions match “certified diamond dealers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 29,666 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Certified diamond dealers by location

52 lists · largest first

Every Certified diamond dealers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “certified diamond dealers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many certified diamond dealers are there worldwide?

RevenueBase identified 16,136 company matches for certified diamond dealers worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Signet Jewelers tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most certified diamond dealers?

The United States leads with 4,553 companies, followed by India (2,591) and the United Kingdom (830). Every certified diamond dealers list by country and city is linked on this page.

Which city has the most certified diamond dealers?

New York leads with 689 company records, followed by Mumbai (475) and London (338).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 29,666 professional contacts with verified work emails tracked across these 16,136 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 16,136 certified diamond dealers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.