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

NAICS 2022 code 423940. NAICS is the North American Industry Classification System, the federal government's standard for grouping businesses.

1. Overview

This is the 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) directly to the public. They sit between the mines, mints, and cutters upstream and the retailers downstream. They rarely make the product and rarely sell to the person who wears it; they make money moving high-value goods and taking on the inventory, financing, and price risk that neither the miner nor the corner jeweler wants to hold.

Why an investor should care: this is a spread-and-flow business layered on top of two of the world's most volatile commodities (precious metals and diamonds). When gold hits records and volatility spikes, the bullion wholesalers trade more ounces and earn more spread — they benefit from activity, not just from the price going up. On the diamond side, the same middle-of-the-chain position that generates steady fees in good times is exactly where value evaporated during the 2023–2025 lab-grown diamond price collapse. It is a low-margin, high-turnover, working-capital-heavy industry where the winners are built on scale, financing, and trust.

Ways in. For public-market investors there are a handful of listed pure-ish plays — the largest is the precious-metals wholesaler A-Mark, now rebranded Gold.com (NYSE: GOLD) [8][9] — plus watch distributors and a jewelry recommerce name. But the industry is overwhelmingly private and family-owned: thousands of small dealers, brokers, and importers, many clustered in a few square blocks of Manhattan. Private-market entry is by owning or financing one of those firms, not by buying a stock.

2. What it is and how it's structured

Scope. The Census Bureau defines 423940 as merchant wholesale distribution of jewelry, precious and semiprecious stones, precious metals and metal flatware, costume jewelry, watches, clocks, silverware, jewelers' findings (the small functional parts — clasps, settings, posts), and numismatic goods (collectible coins) and pearls [4]. "Merchant wholesaler" means the firm takes ownership of the goods and resells them — as opposed to an agent or broker who never holds title. Commission agents and brokers that do not take title are generally classified in NAICS 425120 rather than 423940 [4].

Practically, the industry splits into three quite different businesses:

• Bullion and precious-metal dealers — buy and sell gold, silver, platinum, and palladium (coins, bars, rounds) with mints, refiners, banks, other dealers, and the public. Enormous dollar volumes, razor-thin margins. Auramet, for example, describes physical merchanting — moving metal from mines and recyclers through refiners to end users — as its principal activity [18].
• Diamond and gemstone dealers — import rough or polished stones, grade and sort them, and sell to manufacturers and retailers, heavily on memo (consignment). Relationship- and credit-driven; the New York Diamond District on 47th Street alone houses an estimated 2,600-plus jewelers, wholesalers, cutters, and dealers on a single block [12].
• Finished-jewelry and watch distributors — source or design product and sell it wholesale to retail chains and independents, often alongside their own direct-to-consumer channel.
• Findings and components distributors — compete on assortment, availability, customization, and fast delivery. Stuller, for example, describes a catalog exceeding 200,000 products with next-day delivery and manufacturing/distribution operations in North America, Europe, and Asia [19].

Ownership mix. Extremely fragmented and mostly closely held — family firms, sole proprietors, and tight ethnic and religious trading networks (the diamond trade in particular runs on reputation and handshake credit). A small number of large, professionally managed, publicly traded or private-equity-backed bullion and distribution companies sit on top.

What it excludes (adjacent NAICS codes):

• Making the jewelry → 339910 Jewelry and Silverware Manufacturing.
• Selling to the wearer at retail → 448310 Jewelry Retailers (this is where Signet's Kay/Zales/Jared, Tiffany, and Brilliant Earth live — they are the customers of this industry, not part of it).
• Refining/smelting metal → 331410 Nonferrous Metal (except Aluminum) Smelting and Refining.
• Precious-metal ore and concentrate → 423520 Coal and Other Mineral and Ore Merchant Wholesalers [4].
• Non-precious (base-metal) flatware → 423220 Home Furnishing Merchant Wholesalers [4].

3. How big it is

From the federal statistics (ground truth):

SBA is the U.S. Small Business Administration; a firm at or below the threshold counts as "small" for federal programs. A FinCEN analysis of the Census Bureau's 2022 Statistics of U.S. Businesses found only 59 of the roughly 6,700 firms had more than 100 employees — the closest published band to the SBA's 125-employee threshold [20]. The industry is numerically dominated by small firms.

Two things stand out. First, this is a very small-headcount, very high-dollar industry: about 38,000 employees moving $76 billion of goods — roughly $11 million of sales per establishment and $2 million per employee. That ratio reflects the nature of 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 earning only a sliver as margin.

Second, it is strikingly unconcentrated. The Herfindahl-Hirschman Index — HHI, a standard 0–10,000 concentration measure where regulators treat anything under 1,500 as unconcentrated — is just 254.9 [2]. The four largest firms make only 28.2% of receipts, the top eight 38.5%, the top 20 48.8%, and the top 50 57.8% [2]. In plain terms: no one dominates; even the biggest players are a modest share of a long tail of small dealers.

Undercount caveat. The federal figures materially understate the true footprint of this trade for three reasons. (1) County Business Patterns counts only employer establishments with payroll — it misses the large population of nonemployer sole proprietors and one-person diamond and coin dealers who are a defining feature of the district trade. (2) Much of the diamond business runs on memo/consignment and referral-based, cash-and-credit relationships that are informal by design and poorly captured by surveys. (3) The $76.2 billion "receipts" figure mixes two incompatible things — bullion houses reporting the gross value of every ounce that passes through, and diamond brokers who may report only commission — so the headline sales number overstates the industry's actual economic value-added while the small firm count understates its 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, gold-heavy and driven by rings [17].

4. The investable universe

Most of this industry is private. The listed pure plays are few, and several straddle wholesale, retail, and direct-to-consumer. Note the retail giants below the table are not in this industry — they are its customers.

Downstream retailers (NAICS 448310, not this industry, shown only for orientation): Signet Jewelers (NYSE: SIG), Brilliant Earth (Nasdaq: BRLT), and the jewelry houses inside LVMH (Tiffany) and Richemont (Cartier, Van Cleef). They buy from — and compete for margin with — the wholesalers above.

Major private / other owners. The bulk of the trade: independent diamond and gemstone dealers and importers (concentrated in New York's 47th Street district and in Los Angeles), family-run bullion firms and coin dealers, and large private jewelry distributors. Key names include Stuller, a major private jewelry, findings, gemstone, and equipment supplier serving independent jewelers [19]; Auramet, a private physical-metals merchant and financier [18]; and Richline Group (including Richline Jewelry, LeachGarner, and Rio Grande), owned by Berkshire Hathaway, though Berkshire does not disclose standalone Richline financials [21]. Other important private or foreign-controlled participants include Quality Gold, Heraeus's U.S. precious-metals businesses, and Rolex's U.S. distribution operation. Upstream, De Beers — the historic rough-diamond gatekeeper, ~85% owned by Anglo American and being divested amid heavy write-downs — shapes the diamond supply this industry resells [15].

If you want a listed company whose fortunes track this specific industry, Gold.com/A-Mark is the closest thing to a pure wholesale bet; the others are watch-brand or recommerce stories. Note that Gold.com is not purely NAICS 423940 — it also owns direct-to-consumer dealers, auction and collectible businesses, minting, logistics, storage, and secured lending [11].

5. How the money works

The economics differ sharply by segment, so it pays to look at each.

Bullion wholesalers — spread and flow. These firms earn a tiny premium (spread) between what they pay and what they charge for each ounce, multiplied by enormous volume and fast inventory turnover. Because they book the full metal value as revenue, sales figures are huge but gross margins are razor-thin — typically 1–3% [5][11]. At A-Mark/Gold.com, gross profit was 1.79% of revenue in fiscal 2024, down from 3.17% the prior year as trading conditions cooled [5]. In fiscal 2025 (year ended June 2025), the company reported $10.98 billion of consolidated revenue and $210.9 million of gross profit, a derived gross margin of approximately 1.92% [22]. Revenue growth alone was a poor indicator of operating momentum: wholesale-segment revenue rose 5.4% to $8.7 billion, but the company attributed almost all of that increase to $446.7 million of additional forward sales and higher metal prices; gold ounces sold actually fell 17.3% to 1.145 million ounces [22]. Three levers drive the model:

• Hedging, not betting. A dealer holding millions of ounces stays substantially hedged with futures and forward contracts so it earns the spread rather than gambling on gold's direction [11]. Blowups happen when hedges fail or a firm is caught long into a price drop.
• Volume and volatility. Profit scales with ounces transacted and how often prices move, not the metal price alone. Record gold and silver in 2024–2025 lifted trading activity, new customer accounts, and spreads.
• Financing income. Big dealers run a secured-lending book — loans collateralized by bullion, plus metal leases and consignment to smaller dealers — that earns interest and effectively rents out inventory [11]. This is often the steadier profit stream.
• Metrics that matter: ounces sold (gold and silver), gross profit per ounce, inventory turns, new-customer accounts, loan-book size, and book value per share — not same-store sales or occupancy.

Working capital intensity. Metal, diamonds, and finished jewelry absorb substantial capital. Higher commodity prices increase the dollars required to finance the same physical quantity. A-Mark held $558.0 million of inventory for sale at June 30, 2025 and used credit facilities, borrowed metal, product-financing agreements, and customer repurchase arrangements to support that inventory [22]. Net interest expense and lender availability can matter as much as warehouse labor.

Diamond and gemstone dealers — inventory and credit. The whole game is working capital. Dealers finance expensive stones sitting in the safe and move much of it on memo — goods shipped to a retailer who pays only when the piece sells and returns the rest. That transfers sell-through risk back up the chain to the wholesaler, so credit judgment and relationships are the core competency, and margins are thin and negotiated deal-by-deal. Exposure to the diamond price cycle is direct: a dealer holding polished inventory when wholesale prices fall takes the loss.

Watch and finished-jewelry distributors — brand margin. Here margins are much healthier because value comes from brand and design, not commodity spread — Movado runs gross margins above 50% [7]. The model is classic wholesale sell-in to retailers plus a growing own direct-to-consumer channel; the risk is fashion cycles, brand relevance, and channel inventory (too much unsold product at retail forces discounting). Key metrics: wholesale sell-in versus retail sell-through, owned-vs-licensed brand mix, and operating margin.

6. What drives demand

• Bridal and gifting occasions. Engagements and weddings anchor diamond and gold-ring demand; rings are the single largest jewelry category (~43% of product demand) [17]. Anniversaries, holidays, and self-purchase fill in the rest.
• The gold price and safe-haven investment demand. Gold rose ~65% in 2025 to record highs, with silver up even more [16]. Higher prices and volatility pull retail and institutional buyers into bullion, driving wholesale trading volumes — and lift the metal value embedded in gold jewelry, ~60% of U.S. jewelry revenue [17].
• Discretionary income and confidence. Fine jewelry and watches are cyclical luxuries; demand tracks consumer wealth, equity markets, and sentiment.
• Cultural and seasonal demand. Indian and other South Asian wedding and festival buying is a major, gold-intensive source of physical demand [16].
• The lab-grown-vs-natural mix. A structural shift (see Risks) that is reshaping which stones dealers can profitably carry. In a sample covering 2,500 U.S. jewelers, lab-grown stones represented 45.3% of engagement rings sold in 2024 and appeared in 14.3% of all diamond jewelry sold [23].
• Watch and fashion cycles. Smartwatch competition and luxury-watch trends drive the watch-distribution segment independently of metals.
• Digitization and virtual inventory. Retailers increasingly use virtual inventory rather than stocking goods themselves. Signet reported that virtual inventory accounted for approximately 57% of its North American e-commerce sales and 13% of total segment sales in fiscal 2025 [24]. This model favors wholesalers with deep digital catalogs, real-time availability, imaging, data integration, and reliable drop shipping, while weakening undifferentiated intermediaries.

7. Regulation

This industry carries a heavier compliance load than most wholesale trades because it moves high-value, portable, easily monetized goods.

• Anti-money-laundering (AML) rules — FinCEN, 31 CFR Part 1027. FinCEN is the Treasury's Financial Crimes Enforcement Network; the Bank Secrecy Act (BSA) is the core U.S. AML law. Under a rule implementing USA PATRIOT Act Section 352, dealers who buy and sell $50,000+ of covered precious metals, stones, or jewels a year are "financial institutions" and must run a written AML program — a compliance officer, risk-based controls, training, and independent testing [rule effective since 2006] [25][26]. Finished goods generally count when covered materials comprise at least 50% of selling value; retailer and pawnbroker exclusions are conditional [25]. Dealers must also file IRS/FinCEN Form 8300 for cash payments over $10,000.
• FTC Jewelry Guides — 16 CFR Part 23. The Federal Trade Commission's Guides for the Jewelry, Precious Metals, and Pewter Industries govern truthful description and marketing — karat and fineness claims, gemstone treatments, and, since a 2018 revision, how lab-grown diamonds must be disclosed (e.g., "laboratory-grown," "laboratory-created"); the FTC even removed "natural" from the basic definition of "diamond" [14]. The agency has sent warning letters to sellers using misleading diamond terms [14].
• Conflict-diamond controls — Kimberley Process / Clean Diamond Trade Act (CDTA). The U.S. implements the Kimberley Process Certification Scheme through the 2003 CDTA: every rough diamond imported or exported must carry a Kimberley Process certificate, administered by the State Department, Customs and Border Protection, and the U.S. Kimberley Process Authority [13].
• Conflict-minerals disclosure — Dodd-Frank Section 1502. SEC-reporting companies (SEC = Securities and Exchange Commission) must trace and disclose use of "3TG" minerals — tin, tantalum, tungsten, and gold — from the Democratic Republic of Congo region, pushing supply-chain due diligence onto gold-handling firms.
• Russian-diamond sanctions — G7/EU and OFAC. The Group of Seven advanced economies (G7) and the European Union (EU) banned Russian-origin diamonds in phases through 2024, paired with new traceability and certification requirements — the market's biggest supply-chain shake-up in years [27]. U.S. restrictions prohibit imports of Russian nonindustrial diamonds of at least 1.0 carat from March 1, 2024, expanding to diamonds of at least 0.5 carats from September 1, 2024, even when processed in a third country, subject to specified licenses and grandfathering [28].

8. Competitive dynamics and consolidation

The industry is fragmented at the base and consolidating at the top. Thousands of small, credit- and reputation-gated dealers compete on relationships, sourcing, and financing terms rather than price lists — reflected in the very low HHI of 254.9 and the 28.2% top-four share [2].

Two forces are reshaping it:

• Consolidation and vertical integration in bullion. The largest 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 [8][11]. Scale is the moat in a 2%-margin business.
• Disintermediation and margin pressure in diamonds. Online B2B (business-to-business) trading platforms, retailers buying more directly from cutters, and the collapse of lab-grown diamond values are squeezing the midstream traders whose business was to hold and finance polished inventory. The value that used to accrue to the middle of the diamond chain is thinning.
• Recommerce and resale. Secondary-market luxury goods, watches, and bullion are a growth pocket — the model behind Envela and a driver of new entrants authenticating and reselling pre-owned jewelry and watches [6].

9. Risks

• Commodity price volatility. Unhedged or mis-hedged metal and diamond exposure turns a thin-margin business into a loss-making one fast; gross margins visibly compress when volatility and volumes fall [5].
• Working-capital and credit risk. The industry runs on financed inventory and memo/consignment. A counterparty default, a memo partner that can't pay, or a spike in financing costs hits directly — and rising gold prices raise the capital needed to carry the same physical stock.
• Lab-grown diamond deflation. Wholesale lab-grown prices have fallen as much as ~90%+ since 2018, dragging natural-diamond prices down ~40% over two years and forcing multibillion-dollar write-downs at De Beers [15]. De Beers reported that wholesale and retail lab-grown prices continued falling during 2024 and expected retail pricing to decline further as it caught up with wholesale deflation [15]. Dealers holding the wrong inventory have been badly hurt — Charles & Colvard's 2026 bankruptcy is the clearest example [10].
• Disintermediation. Direct mine-to-retail and online channels threaten the wholesaler's reason to exist in some categories.
• Compliance and sanctions risk. AML failures, Form 8300 lapses, or a Russian-diamond sanctions breach carry fines and reputational damage; the compliance bar keeps rising [13][14][27][28].
• Cyclicality and discretionary demand. Jewelry and watches are among the first purchases consumers defer in a downturn.
• Security, theft, and insurance. Portable, high-value, easily fenced goods make loss prevention and insurance a permanent cost.
• Supplier concentration. Diamond supply still funnels through a few large miners; bullion product through a limited set of mints and refiners.

10. How to invest and the outlook

Public-market routes. The cleanest listed exposure to this industry is Gold.com (NYSE: GOLD), the former A-Mark — the name and ticker change became effective on December 2, 2025 [29]. It is a leveraged bet on precious-metals trading activity and volatility, financing income, and consolidation, not simply on the gold price [8][9]. Understand the trade-offs: ~2% gross margins mean profits swing hard with volumes and spreads, and the balance sheet is inventory- and financing-heavy [5][11][22]. Movado (NYSE: MOV) and Fossil (Nasdaq: FOSL) are watch-distribution plays whose fortunes ride fashion and brand cycles more than commodities. Envela (NYSE American: ELA) is a small jewelry/bullion recommerce story. Investors wanting metal-price exposure alone are better served by bullion or miner ETFs (exchange-traded funds) — a different bet than owning the wholesaler. The Charles & Colvard bankruptcy is a reminder that the small, single-category names in this space carry real solvency risk [10].

Private-market routes. Because the industry is overwhelmingly private, most real ownership happens by buying, building, or financing a wholesale/distribution firm — a bullion dealership, a diamond or gemstone importer, a watch distributorship, or a recommerce operation. Entry is relationship- and credit-gated (the diamond district in particular), and the core skill being underwritten is inventory financing and counterparty judgment. Supplying working capital — the secured-lending model — is itself a way to participate in the economics without carrying fashion risk. Underwriting should focus on gross profit and inventory turns by product — not reported sales alone — along with metal-price pass-through, aged inventory, memo receivables, customer and supplier concentration, hedge reconciliation, borrowing-base terms, insurance limits, provenance documentation, AML controls, and owner dependence.

Near-term drivers (forward-looking). Several currents look supportive for the metals side and mixed for stones. Record gold and silver prices and elevated volatility should keep bullion trading volumes and financing demand high, favoring scaled wholesalers [16]. On diamonds, the outlook hinges on whether natural-diamond prices stabilize as lab-grown supply floods the low end — a bifurcation that could restore some pricing power to dealers who reposition toward natural and higher-value stones, while continuing to punish those exposed to lab-grown [15]. G7 sanctions and traceability requirements will keep reshaping diamond sourcing and add compliance cost through the mid-2020s [27][28]. And consolidation on the bullion side is likely to continue, rewarding scale, financing muscle, and direct-to-consumer reach. These are judgments about direction, not guarantees; the industry's defining feature — thin margins on volatile, financed inventory — cuts both ways.

---

Sources

1. U.S. Census Bureau, County Business Patterns 2023, NAICS 423940 (establishments, employment, annual 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, illustrative examples, cross-references), 2022. https://www.naics.com/naics-code-description/?code=423940
5. A-Mark Precious Metals, "Fiscal 2024 Results" (revenue ~$9.7B; gross profit $173.3M, 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
6. Envela Corporation (formerly DGSE), FY2025 results and company profile (revenue ~$241M; wholesale/retail jewelry, diamonds, watches, bullion, recommerce), 2025. https://stockanalysis.com/stocks/ela/; https://en.wikipedia.org/wiki/Envela
7. Movado Group, Inc., "Fourth Quarter and Fiscal Year 2025 Results" (revenue ~$650M; wholesale watch distribution; brand portfolio), 2025. https://investors.movadogroup.com/news/news-details/2025/Movado-Group-Inc--Announces-Fourth-Quarter-and-Fiscal-Year-2025-Results/default.aspx
8. GuruFocus / 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
9. Yahoo Finance / MacroTrends, "A-Mark (Gold.com) revenue" (FY2025 revenue $10.98B, +13.19%; segments: Wholesale, Direct-to-Consumer, Secured Lending), 2025. https://www.macrotrends.net/stocks/charts/AMRK/a-mark-precious-metals/revenue
10. National Jeweler, "Charles & Colvard Files for Bankruptcy, Citing Price Pressures" (revenue ~$16M FY2025, down from ~$30M FY2023; Chapter 11 in early 2026), 2026. https://nationaljeweler.com/articles/14761-charles-colvard-files-for-bankruptcy-citing-price-pressures
11. A-Mark Precious Metals, Form 10-K / investor materials (spreads-and-flows wholesale 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
12. With Clarity / NYC Diamond District guides, "NY Diamond District" (2,600+ jewelers/wholesalers/dealers on 47th Street; wholesale resale-permit practice), 2025. https://www.withclarity.com/blogs/diamond/ny-diamond-district
13. U.S. Customs and Border Protection / U.S. Department of State / Wikipedia, "Kimberley Process Certification Scheme and the Clean Diamond Trade Act of 2003" (mandatory KP certificates on rough-diamond import/export), 2003–present. https://www.cbp.gov/trade/programs-administration/natural-resources-protection/conflict-diamonds; https://en.wikipedia.org/wiki/Clean_Diamond_Trade_Act
14. U.S. Federal Trade Commission, "FTC Approves Final Revisions to Jewelry Guides" (16 CFR Part 23; 2018 lab-grown diamond disclosure changes; removal of "natural" from diamond definition; diamond-ad warning letters), 2018–2019. https://www.ftc.gov/news-events/news/press-releases/2018/07/ftc-approves-final-revisions-jewelry-guides
15. National Jeweler / TheStreet / De Beers Group / Anglo American, "Lab-grown diamond price collapse and natural-diamond decline" (lab-grown wholesale prices down ~74% 2020–2024 and ~90%+ since 2018; natural prices down ~40% in two years; De Beers write-downs), 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
16. BullionVault / World Bank, "Record Gold Price Ends 2025 Up 65%, Silver Jumps 144%" and precious-metals demand notes (gold record highs, 2025 average ~$3,435/oz; India festival/wedding gold demand), 2025. https://www.bullionvault.com/gold-news/gold-price-news/gold-silver-2025-record-price-123120251
17. 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
18. 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
19. Stuller, "About" (200,000+ product catalog, next-day delivery, manufacturing/distribution operations in North America, Europe, Asia), 2025. https://www.stuller.com/About
20. FinCEN, "Regulatory Analysis — Dealers in Precious Metals, Precious Stones, or Jewels," 2026 (6,742 firms; 59 with >100 employees; small-business structure), pp. 82–83. https://public-inspection.federalregister.gov/2026-06271.pdf
21. 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
22. 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 forward sales and higher prices; gold ounces sold –17.3% to 1.145M oz; $558.0M inventory). https://www.sec.gov/Archives/edgar/data/1591588/000119312525200462/amrk-20250630.htm
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. FinCEN, "Frequently Asked Questions — Dealers in Precious Metals, Precious Stones, or Jewels" ($50,000 threshold; 50% covered-material rule; retailer/pawnbroker exclusions). https://www.fincen.gov/resources/statutes-regulations/guidance/frequently-asked-questions
26. FinCEN / eCFR, "31 CFR Part 1027 — Rules for Dealers in Precious Metals, Precious Stones, or Jewels" and interim final rule under USA PATRIOT Act §352 (AML program requirements), 2005–present. https://www.ecfr.gov/current/title-31/subtitle-B/chapter-X/part-1027
27. IPIS / Antwerp World Diamond Centre / TIME, "G7 and EU Russian-diamond sanctions" (phased ban January–September 2024; blockchain traceability from 0.5 carats; G7+EU ≈70% of global diamond consumption), 2023–2024. https://ipisresearch.be/g7-targets-russian-diamonds-qa/; https://www.awdc.be/g7eu-sanctions-faq
28. 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
29. A-Mark Precious Metals / Gold.com, SEC Form 8-K (name and ticker change to Gold.com / NYSE: GOLD effective December 2, 2025). https://www.sec.gov/Archives/edgar/data/1591588/000119312525307852/gold-20251202.htm