Company lists · Data refreshed September 2026

Top 25 Monocrystalline diamond manufacturers worldwide

Name: Monocrystalline diamond manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 545 companies tracked

RevenueBase identified 545 monocrystalline diamond manufacturers worldwide as of September 2026 and tracks 8,530 professional contacts across them, including 1,032 with verified work emails and 0 with mobile numbers. India is the largest market and Surat the largest hub.

This list covers monocrystalline diamond manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for monocrystalline diamond manufacturers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

545Companies

8,530Contacts tracked

1,032Verified emails

0Mobile numbers

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The 25 largest monocrystalline diamond manufacturers worldwide

Ranked by team size

Top 25 of 545 monocrystalline diamond manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to monocrystalline diamond manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kiran Gems Private Limited	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	10001+	1,052 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
2	Dharmanandan Diamonds Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	5,001-10,000	415 contacts →
	Partial evidence “Dharmanandan Diamonds, widely known as DDPL is a prominent natural diamond manufacturing company.” Source: RevenueBase Database · checked Sep 17, 2026
3	Kama Jewelry	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	275 contacts →
	Partial evidence “Founded in 1996 with a mission to delight customers with exceptional products and superior service, Kama Jewelry has firmly established itself among the top ten diamond jewelry…” Source: RevenueBase Database · checked Sep 17, 2026
4	Sarine Technologies	Partial evidence	Hod Hasharon, IsraelHQ checked Sep 17, 2026	501-1,000	251 contacts →
	Partial evidence “Since 1988, Sarine Technologies has been the leading technology company in the worldwide diamond domain, providing multi-disciplinary products based on cutting-edge technology to…” Source: RevenueBase Database · checked Sep 17, 2026
5	Asian Star Company Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	249 contacts →
	Partial evidence “OUR HERITAGE: The Asian Star group represents a rich heritage of values, skills and experience, amassed over five decades in the diamond industry.” Source: RevenueBase Database · checked Sep 17, 2026
6	Goldstar Jewellery	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	225 contacts →
	Partial evidence “Established in 1962, Goldstar is a trusted name in the diamond and jewellery industry.” Source: RevenueBase Database · checked Sep 17, 2026
7	Dimexon Diamonds	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	199 contacts →
	Strong evidence “Dimexon Diamonds Ltd, with sales offices in all 4 corners of the globe, is one of the world’s leading diamond manufacturers.” Source: RevenueBase Database · checked Sep 17, 2026
8	Muller	Indirect evidence	Zoutleeuw, BelgiumHQ checked Sep 17, 2026	501-1,000	195 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
9	Shivam Jewels	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	127 contacts →
	Strong evidence “Shivam Jewels is a natural diamond manufacturer built on 30 years of precision and consistency.” Source: RevenueBase Database · checked Sep 17, 2026
10	Kapu Gems	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	501-1,000	122 contacts →
	Partial evidence “For over six decades, Kapu Gems has been more than a manufacturer.” Source: RevenueBase Database · checked Sep 17, 2026
11	Star Rays	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	501-1,000	88 contacts →
	Strong evidence “Star Rays is a diamond manufacturer who are passionate about their products and solely focused on the diamond industry.” Source: RevenueBase Database · checked Sep 17, 2026
12	Shairu Gems Diamonds Private Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	85 contacts →
	Partial evidence “The Shairu Gems Diamonds Group is one of India’s leading polished diamond suppliers.” Source: RevenueBase Database · checked Sep 17, 2026
13	Blue Star Diamonds Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	70 contacts →
	Partial evidence “The Blue Star Diamonds group was established in Mumbai by Vasantlal Mehta in 1966.” Source: RevenueBase Database · checked Sep 17, 2026
14	Bhanderi LAB Grown Diamonds	Partial evidence	Surat, IndiaHQ checked Sep 17, 2026	501-1,000	66 contacts →
	Partial evidence “Bhanderi Lab Grown Diamonds is an emerging name in the CVD diamond industry.” Source: RevenueBase Database · checked Sep 17, 2026
15	ADI SRL	Strong evidence	Thiene, ItalyHQ checked Sep 17, 2026	201-500	63 contacts →
	Strong evidence “Diamond tools manufacturer” Source: RevenueBase Database · checked Sep 17, 2026
16	Dr. Kaiser Diamantwerkzeuge Gmbh & Co. KG	Partial evidence	Celle, GermanyHQ checked Sep 17, 2026	201-500	55 contacts →
	Partial evidence “Precision engineering and diamonds form a significant contribution in a modern production environment.” Source: RevenueBase Database · checked Sep 17, 2026
17	YDI LTD	Indirect evidence	Ramat Gan, IsraelHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “YDI is a DTC Sightholder and is a longstanding key purchaser from all the major rough producers.” Source: RevenueBase Database · checked Sep 17, 2026
18	Grown Diamond Corporation	Partial evidence	NY, United StatesHQ checked Sep 17, 2026	11-50	50 contacts →
	Partial evidence “Grown Diamond Corporation was established in 2012, where along with our partners we have invested strongly over the years in advanced/disruptive technologies to successfully grow…” Source: RevenueBase Database · checked Sep 17, 2026
19	LUSIX	Partial evidence	Rehovot, IsraelHQ checked Sep 17, 2026	51-200	49 contacts →
	Partial evidence “A Landa group creation, Lusix is a prime grower of lab grown diamonds committed to supplying affordable luxury to environmental and socially aware consumers.” Source: RevenueBase Database · checked Sep 17, 2026
20	Diyora Diamond	Partial evidence	Surat, IndiaHQ checked Sep 17, 2026	501-1,000	49 contacts →
	Partial evidence “At Diyora Diamonds, we don't carve just carve gems.” Source: RevenueBase Database · checked Sep 17, 2026
21	Paladiya Brothers	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	46 contacts →
	Partial evidence “Welcome to Paladiya Brothers & Co, we pride ourselves on being a trusted name in the diamond industry, offering exceptional quality and unparalleled service.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ratnakala Exports Private Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	44 contacts →
	Partial evidence “Ratnakala is a natural diamond manufacturing company with more than forty-five years of experience serving both Indian and international markets.” Source: RevenueBase Database · checked Sep 17, 2026
23	R.Rajesh Exports	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	501-1,000	44 contacts →
	Partial evidence “R.Rajesh Exports, which was founded in the early 1970’s, has emerged as a front row leader in the manufacturing of Finest Quality Diamonds and continues to expand its wings…” Source: RevenueBase Database · checked Sep 17, 2026
24	Snjdiam	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	501-1,000	41 contacts →
	Partial evidence “Established in 21st Century,"SNJ DIAM" is a fast-growing Diamond Processing Company.” Source: RevenueBase Database · checked Sep 17, 2026
25	Vinayak Diamond Tools PVT LTD	Strong evidence	Jaipur, IndiaHQ checked Sep 17, 2026	201-500	41 contacts →
	Strong evidence “Vinayak Diamond Tools is an ISO 9001 certified conglomerate entitled as the largest manufacturer of stone cutting and processing tools in India.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: monocrystalline diamond manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names monocrystalline diamond manufacturers.
Partial evidence: Its own public description names part of monocrystalline diamond manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name monocrystalline diamond manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 545 monocrystalline diamond manufacturers worldwide

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Monocrystalline diamond manufacturers worldwide at a glance

As of Sep 17, 2026

12.1%Verified-email coverage

15.7Average contacts per company

11-50Median size (employees)

22.6%Largest-city concentration · Surat

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

161

11-50

157

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among monocrystalline diamond manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 6 countries, largest first: India, the United States, Germany, Italy, Belgium, Israel. Country and city lists for monocrystalline diamond manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “monocrystalline diamond manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names monocrystalline diamond manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among monocrystalline diamond manufacturers, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,032 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Monocrystalline diamond manufacturers by location

6 lists · largest first

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

Countries

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names monocrystalline diamond manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many monocrystalline diamond manufacturers are there worldwide?

RevenueBase identified 545 monocrystalline diamond manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Kiran Gems Private Limited, headquartered in Bandra East Mumbai, tops this list with the largest team on record.

Which country has the most monocrystalline diamond manufacturers?

India leads with 305 companies, followed by the United States (122) and Germany (32). Every monocrystalline diamond manufacturers list by country and city is linked on this page.

Which city has the most monocrystalline diamond manufacturers?

Surat leads with 123 headquartered companies, followed by Mumbai (97) and New York (54).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,032 verified decision-maker contacts tracked across these 545 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.