Company lists · Data refreshed September 2026

Top 25 Diamond exploration companies based in the United States

Name: Diamond exploration companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 352 companies tracked

RevenueBase identified 352 diamond exploration companies headquartered in the United States as of September 2026 and tracks 3,324 professional contacts across them, including 917 with verified work emails. New York is the largest hub.

This list covers diamond exploration companies headquartered in the United States, 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 19, 2026.

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 19, 2026 86% judged on-target in blind review

352Companies

3,324Contacts tracked

917Verified emails

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The 25 largest diamond exploration companies based in the United States

Ranked by team size

Top 25 of 352 diamond exploration companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to diamond exploration companies: 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	Kama Jewelry	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 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 19, 2026
2	Rare Carat	Partial evidence	New York City, NY, United StatesHQ checked Sep 19, 2026	51-200	168 contacts →
	Partial evidence “Founded in 2016 by a former BCG consultant frustrated with his own engagement ring buying experience, Rare Carat began with a mission to make diamond buying more transparent for…” Source: RevenueBase Database · checked Sep 19, 2026
3	International Diamond Center	Partial evidence	Clearwater, FL, United StatesHQ checked Sep 19, 2026	51-200	111 contacts →
	Partial evidence “Founded by Keith Leclerc in 1981, International Diamond Center began as a jewelry wholesaler.” Source: RevenueBase Database · checked Sep 19, 2026
4	VRAI	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	105 contacts →
	Indirect evidence “VRAI crafts fine jewelry by thoughtfully entwining groundbreaking science and sophisticated design.” Source: RevenueBase Database · checked Sep 19, 2026
5	h.k.designs	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	98 contacts →
	Indirect evidence “H.K.” Source: RevenueBase Database · checked Sep 19, 2026
6	Rangefront Mining Services	Partial evidence	Elko, NV, United StatesHQ checked Sep 19, 2026	51-200	79 contacts →
	Partial evidence “Rangefront exists to serve your mining or exploration project in the most efficient, advanced, and forward-thinking way.” Source: RevenueBase Database · checked Sep 19, 2026
7	KWIAT	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Partial evidence “Kwiat is a 115 year-old, family owned and operated diamond jewelry house based in New York City.” Source: RevenueBase Database · checked Sep 19, 2026
8	Call & Nicholas	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 19, 2026	51-200	52 contacts →
	Indirect evidence “CALL & NICHOLAS (CNI) is an international mining consulting firm that specializes in geological engineering, geotechnical engineering, and hydrogeology.” Source: RevenueBase Database · checked Sep 19, 2026
9	Grown Diamond Corporation	Partial evidence	NY, United StatesHQ checked Sep 19, 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 19, 2026
10	Aneri Jewels	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	501-1,000	42 contacts →
	Partial evidence “We are a vertically-integrated diamond jewelry manufacturer that sells to the top jewelry retailers and independents in jewelry industry.” Source: RevenueBase Database · checked Sep 19, 2026
11	V&a Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	501-1,000	42 contacts →
	Partial evidence “V&A Group of Companies - AV Diamonds, V&A Luxury, Ethos Creations, ZK Diamonds, AV Elegance, Web4Jewelers & more.” Source: RevenueBase Database · checked Sep 19, 2026
12	Kiran Gems USA INC	Partial evidence	New York, United StatesHQ checked Sep 19, 2026	11-50	39 contacts →
	Partial evidence “Kiran Gems is the world's largest manufacturer and supplier of polished natural diamonds, establishing benchmarks not just for sheer scale of operations, but also for product…” Source: RevenueBase Database · checked Sep 19, 2026
13	The Diamond Port	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	38 contacts →
	Partial evidence “Join Fastest Growing B2B diamond Marketplace The Diamond Port streamlines your diamond sourcing.” Source: RevenueBase Database · checked Sep 19, 2026
14	BIG Rock Exploration	Partial evidence	Stillwater, MN, United StatesHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Big Rock Exploration, LLC (BRE) specializes in mineral and mining exploration offering clients experience in project management, resource targeting, asset development and geologic…” Source: RevenueBase Database · checked Sep 19, 2026
15	Great Lakes Crystal Technologies	Partial evidence	East Lansing, MI, United StatesHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “GLCT's mission is to become the leading provider of high-performance crystalline diamond materials for high-technology applications” Source: RevenueBase Database · checked Sep 19, 2026
16	Mervis Diamond Importers	Partial evidence	Tysons Corner, VA, United StatesHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “Mervis Diamond specializes in diamond engagement rings, wedding rings, diamond studs, and so much more!” Source: RevenueBase Database · checked Sep 19, 2026
17	Shah Luxury	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “One of the constant and consistent underlying consequences of the evolution of our company has been our re-focused attention to the ever-changing fashion influences dictated by…” Source: RevenueBase Database · checked Sep 19, 2026
18	Gunderson's Jewelers	Indirect evidence	Sioux City, IA, United StatesHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Gunderson's believes in honesty, quality and reliability.” Source: RevenueBase Database · checked Sep 19, 2026
19	Burgex Mining Consultants	Partial evidence	Midvale, UT, United StatesHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Burgex Mining Consultants is a full-service mineral exploration and consulting firm dedicated to solving the challenges of mining and adding value at every stage of the project…” Source: RevenueBase Database · checked Sep 19, 2026
20	Sanghavi Diamonds INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	31 contacts →
	Indirect evidence “he 'Sanghavi Exports Group' was founded by the four Sanghavi brothers, Vasant, Kirti, Ramesh and Chandrakant in the late 70s, with a great vision of achieving major success &…” Source: RevenueBase Database · checked Sep 19, 2026
21	Ascot Diamonds	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Ascot Diamonds is a jewelry store with locations in Atlanta, Washington DC, Dallas, New York, Charlotte, Charleston SC, and Philadelphia.” Source: RevenueBase Database · checked Sep 19, 2026
22	Behre Dolbear	Indirect evidence	Co. 80155, CO, United StatesHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “Behre Dolbear is one of the oldest mineral industry advisory firms in the world continuously operating since 1911.” Source: RevenueBase Database · checked Sep 19, 2026
23	Marshall Miller & Associates	Indirect evidence	Bluefield, VA, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Headquartered in Bluefield, Virginia, Marshall Miller & Associates (MM & A) represents a unique assembly of engineering and science-related professionals, whose goals are to…” Source: RevenueBase Database · checked Sep 19, 2026
24	Cygni LAB Diamonds	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	501-1,000	29 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Leviev Diamonds	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Leviev Diamonds has been a trusted source of exceptional natural diamonds for polishers, cutters, and jewelers for over three decades.” Source: RevenueBase Database · checked Sep 19, 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: diamond exploration companies. 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 diamond exploration companies.
Partial evidence: Its own public description names part of diamond exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name diamond exploration companies. 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 352 diamond exploration companies based in the United States

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Diamond exploration companies based in the United States at a glance

As of Sep 19, 2026

27.6%Verified-email coverage

9.4Average contacts per company

1-10Median size (employees)

40.6%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

183

11-50

124

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 352 companies.

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 diamond exploration companies, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “diamond exploration companies”. 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 diamond exploration companies), 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 diamond exploration companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 917 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 19, 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.

Diamond exploration companies by metro

Diamond exploration companies in New York143

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 diamond exploration companies, 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 diamond exploration companies are there based in the United States?

RevenueBase identified 352 diamond exploration companies headquartered in the United States 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?

Kama Jewelry, headquartered in New York, tops this list with the largest team on record.

Which city has the most diamond exploration companies?

New York leads with 143 headquartered companies, followed by Los Angeles (16) and Houston (6).

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 917 verified decision-maker contacts tracked across these 352 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 19, 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.