Company lists · Data refreshed September 2026

Top 25 Gemstone manufacturers based in the United States

Name: Gemstone manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 2,015 companies tracked

RevenueBase identified 2,015 gemstone manufacturers headquartered in the United States as of September 2026 and tracks 21,041 professional contacts across them, including 6,482 with verified work emails. New York is the largest hub.

This list covers gemstone manufacturers 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 16, 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 16, 2026 86% judged on-target in blind review

2,015Companies

21,041Contacts tracked

6,482Verified emails

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

The 25 largest gemstone manufacturers based in the United States

Ranked by team size

Top 25 of 2,015 gemstone manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to gemstone 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	James Avery Artisan Jewelry	Partial evidence	Kerrville, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,655 contacts →
	Partial evidence “James Avery Jewelry offers high quality, artfully crafted jewelry in sterling silver, gold and gemstones.” Source: RevenueBase Database · checked Sep 16, 2026
2	Stuller, INC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,061 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
3	Jewelry Television	Partial evidence	Knoxville, TN, United StatesHQ checked Sep 16, 2026	1,001-5,000	837 contacts →
	Partial evidence “At Jewelry Television® our mission is to open the world of fine jewelry and gemstones to everyone.” Source: RevenueBase Database · checked Sep 16, 2026
4	Marble And Granite	Indirect evidence	Westwood, MA, United StatesHQ checked Sep 16, 2026	n/a	764 contacts →
	Indirect evidence “Welcome to Marble and Granite, Inc, your resource for all your stone needs and questions.” Source: RevenueBase Database · checked Sep 16, 2026
5	Diamonds Direct	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	501-1,000	587 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
6	Arizona Tile	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 16, 2026	501-1,000	499 contacts →
	Indirect evidence “Founded in 1977, Arizona Tile has grown to have locations in 10 Western states.” Source: RevenueBase Database · checked Sep 16, 2026
7	International Gemological Institute - USA	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	501-1,000	394 contacts →
	Indirect evidence “IGI, a Blackstone portfolio company, is the world’s largest independent provider of gemological services.” Source: RevenueBase Database · checked Sep 16, 2026
8	Kama Jewelry	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	275 contacts →
	Indirect 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 16, 2026
9	John Hardy	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	268 contacts →
	Indirect evidence “Artisan Handcrafted Since 1975 Drawing inspiration from Bali’s elemental beauty, we are guided by our heritage of artistry and reverence for nature in everything we do.” Source: RevenueBase Database · checked Sep 16, 2026
10	Architectural Surfaces	Indirect evidence	Austin, TX, United StatesHQ checked Sep 16, 2026	201-500	261 contacts →
	Indirect evidence “A national company with the soul of a family business, Architectural Surfaces is a leading importer and distributor of natural stone, quartz and tile for residential and…” Source: RevenueBase Database · checked Sep 16, 2026
11	RIO Grande	Partial evidence	Albuquerque, NM, United StatesHQ checked Sep 16, 2026	201-500	254 contacts →
	Partial evidence “Rio Grande, a Berkshire Hathaway company, exists to support the bench jeweler, the jewelry designer, the retail jeweler, the jewelry manufacturer and the educator.” Source: RevenueBase Database · checked Sep 16, 2026
12	Park Industries	Indirect evidence	St. Cloud, MN, United StatesHQ checked Sep 16, 2026	201-500	215 contacts →
	Indirect evidence “Founded in 1953, Park Industries has been designing, manufacturing, selling, and supporting solutions for the stone industry for 70 years.” Source: RevenueBase Database · checked Sep 16, 2026
13	Rapaport	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	51-200	204 contacts →
	Indirect evidence “The Rapaport Group is an international network of companies providing first class, added value services that support the development of free, fair, efficient and competitive…” Source: RevenueBase Database · checked Sep 16, 2026
14	Triton Stone Group	Indirect evidence	Harahan, LA, United StatesHQ checked Sep 16, 2026	201-500	192 contacts →
	Indirect evidence “Triton Stone Group is a family owned company, headquartered in New Orleans, Louisiana.” Source: RevenueBase Database · checked Sep 16, 2026
15	Lugano	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 16, 2026	51-200	164 contacts →
	Indirect evidence “As one of the finest jewelers in the world, Lugano was founded with the vision of creating exquisite, one-of-a-kind jewelry.” Source: RevenueBase Database · checked Sep 16, 2026
16	Gemological Science International GSI	Indirect evidence	Manhattan, United StatesHQ checked Sep 16, 2026	51-200	160 contacts →
	Indirect evidence “Gemological Science International (GSI) is one of the largest gemological laboratories with 13 offices in the United States, India, UAE, Hong Kong and Thailand.” Source: RevenueBase Database · checked Sep 16, 2026
17	NA Hoku Jewelers	Indirect evidence	Honolulu, HI, United StatesHQ checked Sep 16, 2026	201-500	132 contacts →
	Indirect evidence “Na Hoku Company Facts National Jeweler Magazine, a prominent jewelry industry periodical, ranks Na Hoku the 10th largest fine jewelry retailer in the United States (ranked by…” Source: RevenueBase Database · checked Sep 16, 2026
18	Material Bespoke Stone Tile	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 16, 2026	51-200	118 contacts →
	Partial evidence “MATERIAL Bespoke Stone + Tile is America’s oldest, largest, and only fully integrated manufacturer of hand-carved architectural and dimensional stone.” Source: RevenueBase Database · checked Sep 16, 2026
19	UMI Stone	Indirect evidence	Naples, FL, United StatesHQ checked Sep 16, 2026	51-200	112 contacts →
	Indirect evidence “For over two decades, UMI’s mission has been to source the finest stone surfaces from around the globe.” Source: RevenueBase Database · checked Sep 16, 2026
20	International Diamond Center	Indirect evidence	Clearwater, FL, United StatesHQ checked Sep 16, 2026	51-200	111 contacts →
	Indirect evidence “Founded by Keith Leclerc in 1981, International Diamond Center began as a jewelry wholesaler.” Source: RevenueBase Database · checked Sep 16, 2026
21	Marble Systems INC	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 16, 2026	501-1,000	102 contacts →
	Indirect evidence “Since 1982, Marble Systems has been committed to delivering sublime collections of natural stone.” Source: RevenueBase Database · checked Sep 16, 2026
22	OHM International, INC	Indirect evidence	Monroe Township, NJ, United StatesHQ checked Sep 16, 2026	51-200	98 contacts →
	Indirect evidence “Established in 1987, OHM International Inc.” Source: RevenueBase Database · checked Sep 16, 2026
23	h.k.designs	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	98 contacts →
	Indirect evidence “H.K.” Source: RevenueBase Database · checked Sep 16, 2026
24	Stone Systems	Indirect evidence	Coral Gables, FL, United StatesHQ checked Sep 16, 2026	201-500	95 contacts →
	Indirect evidence “Stone Systems is the largest network of commonly owned stone fabrication shops in the North America.” Source: RevenueBase Database · checked Sep 16, 2026
25	Marble Of The World	Indirect evidence	Pompano Beach, FL, United StatesHQ checked Sep 16, 2026	51-200	91 contacts →
	Indirect evidence “Marble Of The World is now part of The Stone Collection with additional locations in Arizona, Colorado, Texas, and Utah.” Source: RevenueBase Database · checked Sep 16, 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: gemstone 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 gemstone manufacturers.
Partial evidence: Its own public description names part of gemstone manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name gemstone 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 2,015 gemstone manufacturers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 6,482 reachable decision-makers.

Free signup · no credit card

View the full list →

Gemstone manufacturers based in the United States at a glance

As of Sep 16, 2026

30.8%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

17.5%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

1,027

11-50

733

51-200

184

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,015 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 gemstone 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “gemstone 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 gemstone 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 gemstone manufacturers, 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, 6,482 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 16, 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.

Gemstone manufacturers by metro

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 gemstone 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 gemstone manufacturers are there based in the United States?

RevenueBase identified 2,015 gemstone manufacturers 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?

James Avery Artisan Jewelry, headquartered in Kerrville, tops this list with the largest team on record.

Which city has the most gemstone manufacturers?

New York leads with 353 headquartered companies, followed by Los Angeles (80) and Houston (44).

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 6,482 verified decision-maker contacts tracked across these 2,015 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 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,015 gemstone manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Gemstone manufacturers by geography

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 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.