Company lists · Data refreshed November 2026

Top 25 Diamond manufacturers worldwide

RevenueBase identified 6,778 company matches for diamond manufacturers worldwide as of November 2026 and tracks 85,483 professional contacts across them, including 14,770 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for diamond manufacturers 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 November 6, 2026. Country and city lists for diamond manufacturers 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 Nov 6, 2026 How this list was built
6,778Companies
85,483Contacts tracked
14,770Verified emails
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The 25 largest diamond manufacturers worldwide

Ranked by team size
Top 25 of 6,778 company matches for diamond manufacturers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGaborone, BotswanaHQ recorded Nov 6, 20265,001-10,0004,538 contacts →

Exact match

“Debswana is the largest private sector employer in Botswana, with more than 4 staff members.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 202610001+4,000 contacts →

Exact match

“The only luxury diamond brand present at source.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAkron, OH, United StatesHQ recorded Nov 6, 20265,001-10,0002,228 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchKolkata, IndiaHQ recorded Nov 6, 20261,001-5,0001,628 contacts →

Exact match

“Senco Gold & Diamonds, since 1938, carries an incredible legacy spanning generations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSt. Helier, JerseyHQ recorded Nov 6, 20265,001-10,0001,228 contacts →

Exact match

“Petra Diamonds is a leading independent diamond mining group and a consistent supplier of gem quality rough diamonds to the international market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBangalore, IndiaHQ recorded Nov 6, 20261,001-5,0001,172 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMumbai, IndiaHQ recorded Nov 6, 202610001+1,109 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026501-1,000985 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMumbai, IndiaHQ recorded Nov 6, 20261,001-5,000936 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMumbai, IndiaHQ recorded Nov 6, 20265,001-10,000901 contacts →

Exact match

“At Hari Krishna Exports, we are a global leader in the natural diamond industry, powered by a purpose that goes beyond our stones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchChennai, IndiaHQ recorded Nov 6, 202610001+898 contacts →

Exact match

“Founded in 1964, GRT Jewellers is one of India's leading jewellery destinations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew Delhi, IndiaHQ recorded Nov 6, 20261,001-5,000677 contacts →

Exact match

“It all started when PC Jeweller first opened its first showroom in 2005 in Karol Bagh, New Delhi with a vision to redefine elegance, allure and style in the form of stunning…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchRussiaHQ recorded Nov 6, 202610001+619 contacts →

Exact match

“ALROSA Company Limited is one of the world’s leading companies in the field of diamond exploration, mining and sales of rough diamonds, and diamond manufacture.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCharlotte, FL, United StatesHQ recorded Nov 6, 2026501-1,000604 contacts →

Exact match

“Founded in 1995 and headquartered in Charlotte, North Carolina, Diamonds Direct offers one of the largest selections of fine jewelry and diamonds in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWilmington, NC, United StatesHQ recorded Nov 6, 2026501-1,000550 contacts →

Exact match

“Founded in 1946 by Bill and Roberta Zimmer in Wilmington NC, REEDS Jewelers is a true American success story.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWindhoek, NamibiaHQ recorded Nov 6, 2026501-1,000496 contacts →

Exact match

“Namibia has the richest known marine diamond deposits in the world and is among the top 10 producers of gem quality diamonds globally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAntwerp, BelgiumHQ recorded Nov 6, 20265,001-10,000490 contacts →

Exact match

“Rosy Blue is one of the most renowned diamond and jewelry companies in the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMumbai, IndiaHQ recorded Nov 6, 20265,001-10,000476 contacts →

Exact match

“KISNA is the flagship diamond and gold jewellery brand from the Hari Krishna Group that offers trusted diamond expertise in design and innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLytham St. Annes, United KingdomHQ recorded Nov 6, 20261,001-5,000462 contacts →

Exact match

“There’s nowhere quite like The Beaverbrooks Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWindhoek, NamibiaHQ recorded Nov 6, 20261,001-5,000431 contacts →

Exact match

“We produce diamonds, profitably, sustainably and responsibly for the benefit of our shareholders and other stakeholders whilst making a lasting contribution to Namibia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMumbai, IndiaHQ recorded Nov 6, 20265,001-10,000418 contacts →

Exact match

“Dharmanandan Diamonds, widely known as DDPL is a prominent natural diamond manufacturing company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBahçelievler / Istanbul, TürkiyeHQ recorded Nov 6, 2026201-500415 contacts →

Exact match

“Zen Pırlanta- Türkiye’nin pırlanta uzmanı- 1890’lara uzanan köklü geçmişe sahip bir marka- Türkiye’nin en çok tercih edilen pırlanta markası- Avrupa ve Ortadoğu’nun en büyük…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCraighall Park, South AfricaHQ recorded Nov 6, 2026201-500382 contacts →

Exact match

“Three generations of excellent craftsmanship; since 1934 our family has been crafting the finest diamond jewellery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500380 contacts →

Exact match

“PMJ Gems & Jewellers Pvt Ltd is a diamond-studded jewellery manufacturer and retailer providing hand-crafted jewels of par excellence quality since 1964.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchValenza (al), ItalyHQ recorded Nov 6, 2026501-1,000379 contacts →

Exact match

“Damiani Group was founded in 1924 in Valenza, homeland of the best Italian jewelry tradition, thanks to Enrico Grassi, who began designing and creating jewels with diamonds: small…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 6,778 diamond manufacturers worldwide

See the full list, filter by size, metro and specialty, and access 14,770 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Diamond manufacturers worldwide at a glance

As of Nov 6, 2026
17.3%Verified-email coverage
12.6Average contacts per company
11-50Median size (employees)
6.0%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,252
11-50
2,001
51-200
768
201-500
332
501-1,000
142
1,001-5,000
129
5,001-10,000
28
10001+
18

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 diamond manufacturers are linked below.
What qualifies
Company records worldwide whose business descriptions match “diamond manufacturers” 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 14,770 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 November 6, 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.

Diamond manufacturers by location

42 lists · largest first

Every Diamond manufacturers 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 “diamond manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many diamond manufacturers are there worldwide?

RevenueBase identified 6,778 company matches for diamond manufacturers worldwide as of November 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?

Debswana Diamond Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most diamond manufacturers?

The United States leads with 1,600 companies, followed by India (1,591) and the United Kingdom (313). Every diamond manufacturers list by country and city is linked on this page.

Which city has the most diamond manufacturers?

New York leads with 409 company records, followed by Mumbai (380) and Surat (375).

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 14,770 professional contacts with verified work emails tracked across these 6,778 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 November 6, 2026.

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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.