Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (U.S.)

NAICS 2022 code 42394. NAICS is the North American Industry Classification System, the U.S. federal government's standard for grouping businesses. This is a five-digit NAICS industry — one level up from the six-digit detail industries beneath it.

Short page — read this alongside the full child primer. This NAICS industry contains exactly one child, 423940, and is economically identical to it. The page below gives this level's own ground-truth federal stats and a compact orientation; for the full treatment — segment economics, company profiles, regulation, and outlook — see the 423940 primer.

1. Overview

NAICS 42394 is the wholesale middle of the jewelry and precious-metals supply chain: the merchants who buy gold, silver, and platinum bullion, loose diamonds and gemstones, finished jewelry, and watches, and resell them to jewelry stores, manufacturers, other dealers, and increasingly the public. "Merchant wholesaler" means the firm takes ownership of the goods; commission agents and brokers who never take title sit in a different code (425120) [4]. They stand between the mines, mints, and cutters upstream and the retailers downstream, making money by moving high-value goods and absorbing the inventory, financing, and price risk that neither the miner nor the corner jeweler wants to hold [4].

For an investor, the appeal and the danger are the same thing: this is a thin-margin, high-turnover, working-capital-heavy business layered on top of two of the world's most volatile commodities — precious metals and diamonds. The bullion side earns from activity — ounces transacted and price volatility — more than from the price level itself, while the diamond side is precisely where value evaporated in the 2023–2025 lab-grown price collapse. Winners are built on scale, financing, and trust, not on picking which way gold moves.

2. What's inside — and why this level equals its one child

A five-digit NAICS industry is a rollup of the six-digit detail industries below it. NAICS 42394 has only one:

Because the federal classification did not split this trade any finer, 42394 and 423940 are the same industry with the same code stem, the same definition, and the same statistics. Everything true of the child is true here. The real segmentation is commercial rather than statistical — the trade divides into four quite different businesses, all inside the single child code:

• Bullion and precious-metal dealers — razor-thin margins on enormous volume, trading with mints, refiners, banks, other dealers, and the public.
• Diamond and gemstone dealers — relationship- and credit-driven, much of it moved on memo/consignment; the New York Diamond District on 47th Street alone houses an estimated 2,600-plus jewelers, wholesalers, cutters, and dealers [17].
• Finished-jewelry and watch distributors — brand-and-design margin, sold wholesale to chains and independents alongside a growing direct-to-consumer channel.
• Findings and components distributors — clasps, settings, posts, and equipment sold on assortment, availability, and speed; Stuller, for example, describes a catalog exceeding 200,000 products with next-day delivery [14].

Manufacturing the jewelry (339910), retailing it to the wearer (448310), and refining the metal (331410) all sit outside this code [4]. See the 423940 primer for how each segment works.

3. How big it is (this level's rollup figures)

These are 42394's own ground-truth figures from our ingested federal statistics — and, because the child is the whole level, they equal 423940's:

SBA is the U.S. Small Business Administration; a firm at or below the threshold counts as "small" for federal programs. Almost the entire industry clears that bar: a FinCEN analysis of the Census Bureau's 2022 Statistics of U.S. Businesses found only 59 of roughly 6,700 firms had more than 100 employees — the closest published band to the 125-employee standard [5]. Two features stand out. First, it is a small-headcount, very high-dollar industry — roughly 38,000 employees moving $76 billion of goods, about $11 million of sales per establishment and $2 million per employee. That reflects both the product (a single briefcase can hold millions of dollars of diamonds) and the fact that bullion dealers book the full value of the metal as revenue while keeping only a sliver as margin. Second, it is strikingly unconcentrated: the Herfindahl-Hirschman Index (HHI, a 0–10,000 concentration measure; regulators treat anything under 1,500 as unconcentrated) is just 254.9, and the four largest firms make only 28.2% of receipts (top 8: 38.5%; top 20: 48.8%; top 50: 57.8%) [2].

Undercount caveat. These figures understate the true footprint. County Business Patterns counts only employer establishments with payroll, missing the large population of one-person diamond and coin dealers who define the district trade; much of the diamond business runs on informal, credit-based memo/consignment relationships that surveys capture poorly; and the $76.2 billion receipts figure mixes incompatible things — bullion houses reporting the gross value of every ounce passing through, alongside brokers who may report only commission — so the headline sales number overstates economic value-added while the small firm count understates the participant base. For scale context, the downstream U.S. retail jewelry market — a different measure, what consumers pay — was roughly $77–78 billion in 2024 [26].

4. Investable universe (where value concentrates)

With only one child, there is no "which sub-industry" question — value concentration is entirely within 423940. It is overwhelmingly private and family-owned: thousands of small dealers, brokers, and importers, many clustered in a few square blocks of New York's 47th Street diamond district and in Los Angeles [17]. The handful of listed near-pure plays:

• Gold.com (NYSE: GOLD), formerly A-Mark Precious Metals — the largest independent U.S. precious-metals wholesaler/trader (~$11.0B FY2025 revenue); the closest thing to a pure listed bet on this industry, though it is not purely 423940 — it also owns direct-to-consumer dealers, minting, logistics, storage, and a secured-lending book [9][10][7].
• Movado Group (NYSE: MOV) and Fossil Group (Nasdaq: FOSL) — watch distributors whose fortunes ride fashion and brand cycles more than commodities [11].
• Envela Corp. (NYSE American: ELA) — a small jewelry/bullion recommerce story (~$241M FY2025 revenue) [12].
• Charles & Colvard (was Nasdaq: CTHR) — a moissanite/lab-grown distributor with roughly $16M of FY2025 revenue that filed for Chapter 11 bankruptcy in early 2026, a cautionary tale on lab-grown deflation [13].

The larger private tier matters more than the listed one: Stuller in jewelry, findings, gemstones, and equipment [14]; Auramet in physical precious-metals merchanting and financing [15]; and Richline Group (Richline Jewelry, LeachGarner, Rio Grande), owned by Berkshire Hathaway, which does not disclose standalone Richline financials [16] — alongside family-run bullion firms, coin dealers, and independent stone importers. Downstream jewelry retailers (NAICS 448310 — Signet, Brilliant Earth, Tiffany inside LVMH) are the customers of this industry, not part of it. Full company detail is in the 423940 primer.

5. How the money works

The economics are the child's economics, and they differ sharply by segment. Bullion wholesalers earn a tiny spread per ounce multiplied by enormous volume and fast inventory turnover; because they book the full metal value as revenue, gross margins are typically 1–3% — A-Mark/Gold.com ran 1.79% in fiscal 2024 against 3.17% the year before, and 1.92% in fiscal 2025 ($10.979 billion of revenue on $210.9 million of gross profit) [6][8]. Disciplined firms stay hedged with futures so they earn the spread rather than bet on price direction, while a secured-lending book (loans collateralized by bullion) adds steadier financing income [7].

Fiscal 2025 is a useful warning that reported sales are a poor proxy for activity in this industry: A-Mark's wholesale revenue rose 5.4% to $8.7 billion, but the company attributed nearly all of that to $446.7 million of additional forward sales and higher metal prices, while gold ounces sold fell 17.3% to 1.145 million ounces [8]. The same dynamic drives working capital — higher prices mean more dollars tied up in the same physical stock; A-Mark carried $558.0 million of inventory for sale at June 30, 2025, financed with credit facilities, borrowed metal, and product-financing arrangements [8].

Diamond and gemstone dealers live on working capital and credit judgment, financing expensive stones in the safe and moving much of it on memo — which pushes sell-through risk back up the chain to the wholesaler. Watch and finished-jewelry distributors enjoy much healthier margins (Movado runs above 50% gross) because value comes from brand and design, not commodity spread [11]. The metrics that matter — ounces sold, gross profit per ounce, inventory turns, loan-book size, wholesale sell-in versus retail sell-through — are detailed in the child primer.

6. Demand drivers

• Bridal and gifting occasions — engagements and weddings anchor diamond and gold-ring demand; rings are roughly 43% of product demand [26].
• The gold price and safe-haven demand — gold rose ~65% in 2025 to record highs; higher prices and volatility pull buyers into bullion and lift wholesale trading volumes, and gold is ~60% of U.S. jewelry revenue [25][26].
• Discretionary income and confidence — fine jewelry and watches are cyclical luxuries.
• Cultural and seasonal demand — Indian and other South Asian wedding and festival buying is a major, gold-intensive source of physical demand [25].
• The lab-grown-vs-natural diamond mix — now the dominant structural question on the stone side. In a sample covering 2,500 U.S. jewelers, lab-grown stones were 45.3% of engagement rings sold in 2024 and appeared in 14.3% of all diamond jewelry sold [23].
• Digitization and virtual inventory — retailers increasingly sell from a wholesaler's stock rather than their own. Signet reported virtual inventory at roughly 57% of North American e-commerce sales and 13% of total segment sales in fiscal 2025 [24], which rewards wholesalers with deep digital catalogs and reliable drop shipping and squeezes undifferentiated intermediaries.
• Watch and fashion cycles — smartwatch competition and luxury-watch trends move the watch segment independently of metals.

7. Regulation

This industry carries a heavier compliance load than most wholesale trades because it moves high-value, portable, easily monetized goods. In brief: anti-money-laundering (AML) rules under FinCEN (the Treasury's Financial Crimes Enforcement Network) make dealers who buy and sell $50,000+ a year in covered precious metals, stones, or jewels "financial institutions" required to run a written AML program — finished goods generally count when covered materials are at least 50% of selling value, and the retailer and pawnbroker exclusions are conditional — plus IRS/FinCEN Form 8300 filing for cash payments over $10,000 [18]. The FTC Jewelry Guides (Federal Trade Commission, 16 CFR Part 23) govern truthful karat, fineness, and lab-grown-diamond disclosure [19]. Conflict-diamond controls (Kimberley Process / Clean Diamond Trade Act) require certificates on rough-diamond trade [18], and Dodd-Frank Section 1502 pushes 3TG conflict-minerals due diligence — gold included — onto SEC-reporting firms. G7/EU Russian-diamond sanctions (Group of Seven plus European Union) phased in through 2024 [20]; U.S. restrictions bar Russian nonindustrial diamonds of at least 1.0 carat from March 1, 2024 and at least 0.5 carat from September 1, 2024, including stones processed in a third country [21]. Full mechanics are in the 423940 primer.

8. Consolidation

The industry is fragmented at the base and consolidating at the top — reflected in the very low HHI of 254.9 and 28.2% top-four share [2]. The largest bullion wholesaler (A-Mark/Gold.com) has grown by acquiring direct-to-consumer platforms (JM Bullion), retail brands, and loan portfolios, building scale-based purchasing power with mints and refiners and a financing arm few rivals can match — scale is the moat in a 2%-margin business [9][7]. Meanwhile, disintermediation and the collapse of lab-grown diamond values are squeezing the midstream traders whose business was to hold and finance polished inventory, while the shift to virtual inventory concentrates volume on wholesalers with catalog depth and data integration [24]. Recommerce (resale of pre-owned jewelry, watches, and bullion) is a growth pocket [12].

9. Risks

• Commodity price volatility — unhedged or mis-hedged metal and diamond exposure turns a thin-margin business into a loss-maker fast, and margins visibly compress when volumes and volatility fall [6].
• Working-capital and credit risk — the trade runs on financed inventory and memo/consignment; a counterparty default or a spike in financing costs hits directly, and rising metal prices raise the capital needed to carry the same physical stock [8].
• Lab-grown diamond deflation — wholesale lab-grown prices have fallen ~90%+ since 2018, dragging natural prices down ~40% over two years and forcing multibillion-dollar write-downs at De Beers, which reported both wholesale and retail lab-grown prices still falling through 2024; Charles & Colvard's 2026 bankruptcy is the clearest casualty [22][13].
• Disintermediation, compliance/sanctions risk, cyclicality, theft, and supplier concentration — covered in full in the 423940 primer.

10. How to invest and the outlook

Because 42394 is 423940, the routes are the child's routes. Public-market exposure to this specific industry is thin: Gold.com (NYSE: GOLD) — the former A-Mark, whose name and ticker change took effect December 2, 2025 — is the cleanest listed bet, a leveraged play on precious-metals trading activity and volatility and financing income rather than on the gold price, with ~2% gross margins that swing profits hard on an inventory- and financing-heavy balance sheet [9][10][8]. Watch names (MOV, FOSL) ride fashion cycles; Envela (ELA) is a small recommerce story; and the Charles & Colvard bankruptcy is a reminder that single-category micro-caps carry real solvency risk [13]. Investors wanting metal-price exposure alone are better served by bullion or miner ETFs (exchange-traded funds) — a different bet than owning the wholesaler. Private-market ownership — buying, building, or financing a bullion dealership, diamond importer, watch distributorship, or recommerce operation — is how most real participation happens, gated on relationships and the core skill of inventory financing and counterparty judgment; underwriting should center on gross profit and inventory turns by product rather than reported sales, plus aged inventory, memo receivables, hedge reconciliation, borrowing-base terms, and AML controls. Near term, record gold and silver prices favor scaled bullion wholesalers, while the diamond outlook hinges on whether natural-diamond prices stabilize as lab-grown floods the low end, with G7 sanctions and traceability adding compliance cost through the mid-2020s [22][25][20]. For the full outlook, see the 423940 primer.

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Sources

1. U.S. Census Bureau, County Business Patterns 2023, NAICS 423940 (establishments, employment, annual and first-quarter payroll). https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Comparative Statistics / Concentration by Largest Firms, NAICS 423940 (firms, receipts, CR4/CR8/CR20/CR50 shares, HHI). https://www.census.gov/programs-surveys/economic-census.html
3. U.S. Small Business Administration, Table of Small Business Size Standards, 2023 (NAICS 423940 = 125 employees). https://www.sba.gov/document/support-table-size-standards
4. NAICS Association / U.S. Census Bureau, "NAICS Code 423940 — Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers" (definition, examples, cross-references), 2022. https://www.naics.com/naics-code-description/?code=423940
5. FinCEN, "Regulatory Analysis — Dealers in Precious Metals, Precious Stones, or Jewels," 2026 (6,742 firms; 59 with more than 100 employees; small-business structure), pp. 82–83. https://public-inspection.federalregister.gov/2026-06271.pdf
6. A-Mark Precious Metals, "Fiscal 2024 Results" (gross profit 1.79% of revenue vs 3.17% prior year), 2024. https://ir.gold.com/news-events/press-releases/detail/189/a-mark-precious-metals-reports-preliminary-fiscal-fourth
7. A-Mark Precious Metals, Form 10-K / investor materials (spreads-and-flows model, ~2–3% gross margins, hedging policy, Collateral Finance Corporation secured lending, consignment), 2020–2025. https://www.sec.gov/Archives/edgar/data/1591588/000156459020043316/amrk-10k_20200630.htm
8. A-Mark Precious Metals, Form 10-K FY2025 (year ended June 30, 2025: $10.979B revenue, $210.9M gross profit, 1.92% gross margin; wholesale segment +5.4% to $8.7B driven by $446.7M of forward sales and higher prices; gold ounces sold −17.3% to 1.145M oz; $558.0M inventory for sale). https://www.sec.gov/Archives/edgar/data/1591588/000119312525200462/amrk-20250630.htm
9. GlobeNewswire, "A-Mark Precious Metals to Become Gold.com and Transfer to the New York Stock Exchange" (rebrand to Gold.com, ticker GOLD, effective Dec 2, 2025), Nov 6, 2025. https://www.globenewswire.com/news-release/2025/11/06/3183157/0/en/a-mark-precious-metals-to-become-gold-com-and-transfer-to-the-new-york-stock-exchange.html
10. MacroTrends, "A-Mark (Gold.com) revenue" (FY2025 revenue $10.98B; Wholesale, Direct-to-Consumer, Secured Lending segments), 2025. https://www.macrotrends.net/stocks/charts/AMRK/a-mark-precious-metals/revenue
11. Movado Group, Inc., "Fourth Quarter and Fiscal Year 2025 Results" (~$650M revenue; wholesale watch distribution; brand portfolio; >50% gross margin), 2025. https://investors.movadogroup.com/news/news-details/2025/Movado-Group-Inc--Announces-Fourth-Quarter-and-Fiscal-Year-2025-Results/default.aspx
12. Envela Corporation (formerly DGSE), FY2025 results and company profile (~$241M revenue; wholesale/retail jewelry, diamonds, watches, bullion, recommerce), 2025. https://stockanalysis.com/stocks/ela/
13. National Jeweler, "Charles & Colvard Files for Bankruptcy, Citing Price Pressures" (revenue ~$16M FY2025; Chapter 11 in early 2026), 2026. https://nationaljeweler.com/articles/14761-charles-colvard-files-for-bankruptcy-citing-price-pressures
14. Stuller, "About" (200,000+ product catalog, next-day delivery, manufacturing/distribution operations in North America, Europe, Asia), 2025. https://www.stuller.com/About
15. Auramet, "Services" (physical precious-metals merchanting — moving metal from mines and recyclers through refiners to end users), 2025. https://www.auramet.com/services?ced55340_page=5
16. Berkshire Hathaway, 2022 Annual Report (Richline Group description — manufacturing and distribution; no standalone financials disclosed). https://www.sec.gov/Archives/edgar/data/1067983/000119312523073977/d395805dars.pdf
17. With Clarity / NYC Diamond District guides, "NY Diamond District" (2,600+ jewelers, wholesalers, cutters, and dealers on 47th Street), 2025. https://www.withclarity.com/blogs/diamond/ny-diamond-district
18. FinCEN, "31 CFR Part 1027 — Dealers in Precious Metals, Precious Stones, or Jewels" and related FAQs ($50,000 AML threshold; 50% covered-material rule; retailer/pawnbroker exclusions); U.S. Customs and Border Protection / U.S. Department of State, "Kimberley Process Certification Scheme and the Clean Diamond Trade Act of 2003" (mandatory KP certificates on rough-diamond trade). https://www.ecfr.gov/current/title-31/subtitle-B/chapter-X/part-1027; https://www.fincen.gov/resources/statutes-regulations/guidance/frequently-asked-questions; https://www.cbp.gov/trade/programs-administration/natural-resources-protection/conflict-diamonds
19. U.S. Federal Trade Commission, "FTC Approves Final Revisions to Jewelry Guides" (16 CFR Part 23; 2018 lab-grown diamond disclosure changes), 2018–2019. https://www.ftc.gov/news-events/news/press-releases/2018/07/ftc-approves-final-revisions-jewelry-guides
20. IPIS / Antwerp World Diamond Centre, "G7 and EU Russian-diamond sanctions" (phased ban January–September 2024; traceability requirements from 0.5 carats), 2023–2024. https://ipisresearch.be/g7-targets-russian-diamonds-qa/; https://www.awdc.be/g7eu-sanctions-faq
21. U.S. Treasury OFAC, FAQ 1165 (Russian nonindustrial diamonds: ≥1.0 carat banned from March 1, 2024; ≥0.5 carat from September 1, 2024; third-country processing included). https://ofac.treasury.gov/faqs/1165
22. National Jeweler / De Beers Group / Anglo American, "Lab-grown diamond price collapse and natural-diamond decline" (lab-grown wholesale prices down ~90%+ since 2018; natural down ~40% in two years; De Beers write-downs and continued 2024 price declines), 2024–2025. https://nationaljeweler.com/articles/13914-state-of-diamonds-what-s-next-for-lab-grown-diamonds; https://www.debeersgroup.com/news-insights/latest-group-news/2025/preliminary-financial-results-for-2024
23. The New York Times, citing Tenoris, "Lab-Grown Diamonds, Watches: Breitling, Oris" (lab-grown stones = 45.3% of engagement rings sold in 2024, 14.3% of all diamond jewelry; sample of 2,500 U.S. jewelers), March 5, 2025. https://vi.web-platforms-vi.nyti.nyt.net/2025/03/05/fashion/lab-grown-diamonds-watches-breitling-oris.html
24. Signet Jewelers, Form 10-K FY2025 (virtual inventory ≈57% of North American e-commerce sales, ≈13% of total segment sales). https://www.sec.gov/Archives/edgar/data/832988/000083298825000018/sig-20250201.htm
25. BullionVault / World Bank, "Record Gold Price Ends 2025 Up 65%, Silver Jumps 144%" and precious-metals demand notes (India festival/wedding gold demand), 2025. https://www.bullionvault.com/gold-news/gold-price-news/gold-silver-2025-record-price-123120251
26. Grand View Research / Arizton, "U.S. Jewelry Market" (retail market ~$77–78 billion in 2024; rings ~43% of product demand; gold ~60% of revenue), 2024–2025. https://www.grandviewresearch.com/industry-analysis/us-jewelry-market-report; https://www.arizton.com/market-reports/us-jewelry-market/market-size