Jewelry and Silverware Manufacturing in the United States (NAICS 339910)

A Histometrics industry primer for public-market and private investors.

1. Overview

This is the business of physically making jewelry and precious-metal tableware in the United States: engagement rings and wedding bands, gold chains and earrings, sterling flatware, gemstone cutting, and the findings and mountings that supply the trade. It is a small, old, craft-heavy manufacturing industry — roughly 1,800 establishments, about 19,000 payroll workers, and about $7.9 billion in annual shipments [1][2].

Why an investor cares: the retail market these factories feed is far larger — around $63 billion a year in U.S. jewelry and watch sales [6] — but most of that product is now imported or made overseas by U.S.-headquartered marketers. Domestic manufacturing has been hollowed out by low-cost imports and survives mainly in high-touch niches: custom and bridal work, repair, gemstone cutting, and high-volume supply to the trade. So the industry is best understood as a shrunken, specialized production base sitting underneath a large, fragmented consumer market.

Ways in differ sharply by investor type. There is no clean, publicly traded U.S. jewelry manufacturer to buy — the listed names are retailers and brand marketers (covered in Section 4). The actual factories are mostly private: a Berkshire Hathaway subsidiary, family-owned trade suppliers, and a handful of small Made-in-USA specialists. Private investors can own the production layer directly; public investors mostly get exposure to the demand side through jewelry retailers and global luxury houses.

2. What it is and how it's structured

Scope. NAICS (North American Industry Classification System) code 339910 covers establishments that manufacture, engrave, or etch fine and costume jewelry; make metal personal goods; make precious-metal flatware and hollowware (sterling and pewter tableware); cut, polish, and set precious and semiprecious stones; process pearls; stamp coins; and make unassembled jewelry parts [4]. In the 2012 NAICS revision the four older six-digit codes — 339911 (Jewelry except Costume), 339912 (Silverware and Hollowware), 339913 (Jewelers' Material and Lapidary Work), and 339914 (Costume Jewelry and Novelty) — were merged into the single code 339910, which has carried through to the 2022 edition [4]. So costume jewelry is inside this code, a common point of confusion.

What it excludes (adjacent codes). The classification draws hard lines that matter for sizing the industry:

• Watches and clocks are not here — they fall under watch/clock manufacturing (NAICS 334519). This is why a company like Movado is really a watch-and-accessories marketer, not a 339910 manufacturer.
• Non-precious and plated flatware and cutlery (ordinary stainless steel table knives, forks, spoons) sit in NAICS 332215, and other non-precious plated ware in 332999 [4]. Only precious-metal flatware/hollowware counts here — a crucial nuance, because most "silverware" Americans actually own is stainless steel and is classified elsewhere.
• Jewelry plating and engraving of non-precious metal are services under 332812/332813, synthetic/industrial stones under 327999, and non-metal personal goods (leather handbags, etc.) under 316998 [4].
• Jewelry retailing and repair are classified elsewhere; this is a domestic-production classification, not a measure of U.S. jewelry retail spending [4][5].

How production works. Production usually begins with a design or CAD model. The manufacturer sources precious or base-metal alloys, findings, natural or laboratory-grown stones and pearls; creates a wax or resin model; casts, stamps, forms or machines the metal; solders and assembles components; cuts or sets stones; and then polishes, engraves, plates, inspects and packages the item. CAD/CAM and 3-D printing reduce model-making time and enable economical customization, but setting, grading, finishing and quality control remain skilled, labor-intensive operations [3].

Ownership mix. The base is overwhelmingly small and private: about 1,653 firms operating roughly 1,844 establishments [1][2]. The largest real domestic manufacturers are privately held — Richline Group (owned by Berkshire Hathaway) and Stuller (family-owned, Lafayette, Louisiana) supply mountings, chains, findings, and loose stones to the trade at scale [11][12]. Precious-metal flatware brands (Reed & Barton, Oneida) are owned by Lenox, itself private-equity-held, and now source most product abroad; the last company making stainless flatware entirely in the U.S. is tiny, privately owned Sherrill Manufacturing / Liberty Tabletop [13].

The brand/manufacturer boundary is porous. Many brands design products and control sourcing and quality while outsourcing substantially all physical manufacture, often to India, China, Thailand or other jewelry centers. Brilliant Earth, for example, states that it uses third-party suppliers for substantially all jewelry manufacturing [8]. Conversely, vertically integrated businesses may own casting or diamond-processing capacity while earning most of their profit at wholesale or retail. Tiffany, before its acquisition by LVMH, reported that internal facilities in New York, Rhode Island and Kentucky, plus polishing and assembly operations in the Dominican Republic, produced approximately 60% of the jewelry it sold [14]. LVMH now reports Tiffany within its combined Watches and Jewelry business rather than as a separately disclosed U.S. manufacturer [15].

3. How big it is

Federal statistics, the ground truth here:

A private research estimate puts industry revenue a bit higher, around $8.8 billion, but the federal shipments figure of ~$7.9 billion is the anchor [19][2].

Occupational breakdown. BLS's industry-specific occupational data for May 2022 reports 22,270 wage-and-salary jobs, with production occupations accounting for 12,120 jobs (54%) — including 6,340 jewelers and precious-stone-and-metal workers. These figures exclude self-employed proprietors [16].

The undercount caveat — it cuts two ways. First, the maker count is understated. County Business Patterns counts employer establishments only; jewelry-making has an unusually large fringe of sole proprietors, bench jewelers, and artisan/online (Etsy-style) sellers who are non-employer businesses and fall outside the ~19,000 payroll headcount. BLS's broader jeweler occupation illustrates this: of approximately 35,100 occupational jobs in 2024, 34% were classified as self-employed and only 17% were in jewelry and silverware manufacturing [17]. Second, and pointing the other way, this manufacturing code drastically understates the industry's consumer footprint: with ~$7.9 billion in domestic shipments against a ~$63 billion U.S. jewelry-and-watch retail market [2][6], the great majority of what Americans buy is imported or produced abroad. Domestic 339910 output is the small, surviving production slice of a much larger consumption economy.

4. The investable universe

The honest headline: there is no pure-play, publicly traded U.S. jewelry or silverware manufacturer. Public exposure is to the demand side — retailers and brand marketers who design and sell but outsource most production, often overseas. The genuine domestic factories are private.

Publicly traded (demand-side proxies):

Global luxury high-jewelry brands are only reachable through foreign-listed parents: Tiffany & Co. and Bulgari via LVMH; Cartier and Van Cleef & Arpels via Richemont; Harry Winston via Swatch Group. These are diversified luxury conglomerates, not U.S. jewelry-manufacturing plays.

Private and other owners (the actual manufacturing base):

• Richline Group — Berkshire Hathaway subsidiary; includes Richline Jewelry, LeachGarner, Rio Grande and Inverness; manufactures or distributes precious and nonprecious metal, diamond and gemstone products to chains, department stores, mass merchants, e-commerce companies and artisans. Berkshire does not separately report Richline revenue, margin or assets [11][22].
• Stuller — family-owned (Lafayette, Louisiana); vertically integrated manufacturer and distributor serving independent jewelers with findings, settings, finished jewelry, tools and rapid fulfillment; describes itself as one of the largest U.S. wholesale jewelry manufacturers [12].
• Lenox Corporation (private-equity-owned) — owns the Oneida and Reed & Barton tableware brands; largely imports.
• Sherrill Manufacturing / Liberty Tabletop — privately owned; the only maker of stainless flatware entirely in the U.S. [13].
• Numerous private bridal-band, findings, and refining specialists (e.g., Frederick Goldman).

5. How the money works

This is a materials-pass-through, value-added manufacturing business, and the single most important idea is that owners do not make money on the metal. Gold, silver, platinum, and diamonds are pass-through inputs — the maker buys them, fabricates, and prices the finished piece to recover the metal cost plus a fabrication margin. Speculating on the gold price is a way to lose money; the craft is converting commodity into product.

The metrics that actually govern owner returns:

• Value-added (fabrication) margin over input cost. Profit is the spread between the finished-piece price and the pass-through cost of metal and stones. Design, branding, precision, and finish are what command that spread; commodity findings barely earn one.
• Capacity utilization and skilled-labor productivity. These are labor-intensive shops built on scarce bench-jeweler and gemstone-cutting skill. Output per skilled worker and how fully the shop is loaded drive unit economics — the same cyclicality logic as any discretionary-goods manufacturer.
• Inventory turns and working-capital financing. Inventory is extraordinarily expensive (it is gold and diamonds), so capital tied up in stock, the cost to finance it, and turnover rates are decisive. High interest rates make carrying precious-metal inventory painful. The trade widely uses consignment ("memo") and metal leasing to limit this.
• Metal-price pass-through and hedging. Makers pass rising metal costs to buyers, hedge exposure, or shift product mix to lighter/lower-metal designs. Getting pass-through right protects margin when gold spikes. Pass-through is rarely instantaneous: inventory bought at different costs moves through production and wholesale channels over time, while customers may resist higher price points.
• Scrap and refining. Recycled gold is a major, cheaper input; metal recovery and refining relationships matter.
• Production yield and rework. Charles & Colvard identifies saleable yield from silicon-carbide crystal as one of its largest cost variables and notes that gemstone inspection and grading require skills not readily available in the general workforce [23].

Lab-grown diamond economics. Laboratory-grown diamonds have different economics from natural stones: expanding production has driven stone costs and retail prices downward. That can widen unit margins temporarily for a well-positioned buyer, but persistent price deflation reduces inventory value, revenue per piece and consumers' perception of retained value. Signet reported that merchandise containing laboratory-grown diamonds represented approximately 27% of its fiscal-2026 merchandise sales, while warning that continuing cost and retail-price declines could hurt revenue, margins and customer satisfaction [7].

For the volume/trade-supply model (Richline, Stuller), it is a high-throughput, thin-margin business won on scale, breadth, and service. For the domestic flatware holdout, the whole thesis is charging a Made-in-USA premium thick enough to beat cheap imports — a structurally narrow margin.

Seasonality. Wholesale production normally leads retail demand as manufacturers build inventory ahead of holidays. Signet says its fourth quarter historically generates approximately 35–40% of annual sales and a substantial share of annual operating income and cash flow; bridal represented 49% of fiscal-2026 merchandise sales [7]. These are downstream indicators, but they show why manufacturers' order books and working capital are seasonal.

6. What drives demand

• Weddings and engagements. Bridal — engagement rings and wedding bands — is the demand anchor. Marriage counts and engagement timing move the volume base.
• Consumer discretionary income and confidence. Fine jewelry is a discretionary luxury; spending tracks disposable income, consumer confidence, and wealth effects from housing and equity markets.
• Gifting occasions and self-purchase. Holidays, Valentine's Day, and Mother's Day concentrate sales; women self-purchasing has become a large, growing share of demand.
• Precious-metal prices — a double-edged driver. Gold climbed past $3,000/oz in early 2025, peaked near $5,600/oz in January 2026, and traded around $4,000/oz in mid-2026 [24]. High metal prices raise ticket prices (good for dollar sales) but can dampen unit volume and push buyers toward lighter designs and lower-metal alternatives.
• Lab-grown diamonds — the structural swing factor. Lab-grown stones now account for roughly 48% of engagement rings and about 42% of all diamond jewelry sold in the U.S. [25], and the U.S. is the world's dominant lab-grown jewelry market [26]. They expand affordability and volume but compress the value of the stone content per piece, reshaping the mix and the math.
• Silverware demand is in structural decline. Formal dining and bridal-registry silver have fallen out of fashion for decades; the precious-flatware segment now leans on collectors, replacement, and gifting rather than growth.
• CAD/CAM and e-commerce shift power. Digital models can be modified, reused and sent to outside service bureaus, allowing small designers to operate without owning casting capacity [27]. E-commerce and virtual inventory shift power toward manufacturers capable of producing or customizing rapidly after an order. The corresponding downside is smaller initial orders, greater SKU complexity, faster trend turnover and more return exposure.

Employment outlook. BLS projects employment of jewelers and precious-stone-and-metal workers to decline 5% from 2024 through 2034, citing automation and increasing imports as factors, even while expecting replacement openings [17].

7. Regulation

Jewelry manufacturing is lightly regulated on entry but carries specific labeling, sourcing, and financial-crime rules:

• FTC Jewelry Guides. The Federal Trade Commission's Guides for the Jewelry, Precious Metals, and Pewter Industries govern disclosures — karat/fineness claims, and mandatory disclosure of lab-grown versus mined stones and treatments. (The FTC's 2018 revisions notably loosened the definition of "diamond" to encompass lab-grown, accelerating that segment.) Mislabeling can create enforcement, returns and reputational damage [28].
• National Stamping Act. Quality marks (e.g., "14K," "sterling") stamped on an item must be accompanied by the maker's registered trademark, and fineness must meet stated tolerances.
• "Made in USA" claims. FTC standards police country-of-origin marketing — directly relevant to the domestic flatware premium.
• Anti-money-laundering. Under the Bank Secrecy Act, "dealers in precious metals, stones, and jewels" above thresholds must maintain AML programs (31 CFR) — precious goods are a known money-laundering vector. FinCEN's dealer test generally uses prior-year purchases and sales of covered goods exceeding $50,000 each, subject to material-content and retailer exceptions [29].
• Conflict-minerals and responsible sourcing. Gold is a "3TG" conflict mineral under Dodd-Frank Section 1502; public issuers that manufacture or contract-manufacture products containing gold may have SEC conflict-minerals inquiry and disclosure obligations [30]. The Kimberley Process governs rough diamonds [31]; OECD and Responsible Jewellery Council frameworks shape supply-chain due diligence.
• Russian diamond sanctions. OFAC prohibits third-country-processed Russian nonindustrial diamonds weighing at least 1.0 carat from March 1, 2024, and at least 0.5 carat from September 1, 2024, subject to licenses and exceptions [32].
• Product safety. The Consumer Product Safety Commission limits lead and cadmium, especially in costume and children's jewelry.
• Trade and customs. Tariffs, Harmonized Tariff Schedule classification, and country-of-origin rules (Section 8) are effectively a live regulatory variable for this import-exposed industry. Plating and finishing operations also carry EPA/OSHA obligations.

8. Competitive dynamics and consolidation

The structure is fragmented at the bottom, concentrated at the top of the value chain. Federal concentration data show the top 4 firms holding 37.4% of receipts, the top 8 holding 48.4%, and the top 50 holding 74.8% — yet the Herfindahl-Hirschman Index (a standard concentration gauge) is only 484.5, well below the 1,500 threshold antitrust regulators treat as "unconcentrated" [2]. Translation: a handful of large trade suppliers and volume houses take a meaningful slice, but no firm dominates, and a long tail of ~1,600 small shops shares the rest.

The defining competitive force has been import substitution. Cheaper production in India, China, Thailand, and Italy hollowed out U.S. volume manufacturing over two decades (Oneida moved flatware offshore in 2004; most branded silver followed) [13][33]. What survived domestically is what imports handle poorly: custom and bridal work, repair, gemstone cutting, rapid trade supply, and Made-in-USA niches.

Two structural shifts are reshaping the whole chain now. First, retail consolidation — Signet's acquisitions of Blue Nile, James Allen, and Diamonds Direct concentrate buying power downstream and squeeze suppliers [6]. Second, the lab-grown disruption is re-routing the diamond value chain toward India and China (which dominate lab-grown production) and compressing margins on the stone content everyone sells [25][26].

9. Risks

• Cyclicality. Discretionary luxury; volumes fall with recessions, weak confidence, and soft wealth effects.
• Precious-metal volatility. Gold's near-doubling into 2026 [24] swings both input costs and the carrying value of inventory; mispriced pass-through or unhedged stock erodes margin fast. Commodity deflation creates the opposite inventory problem, particularly for generic laboratory-grown diamonds.
• Import competition and tariff whiplash. The industry is highly import-exposed, and 2025–2026 tariff policy has been volatile (see Section 10) — protective for domestic makers but punishing for anyone importing stones or findings.
• Lab-grown deflation. Rising lab-grown share lowers the value locked in each piece's stones, pressuring ticket prices and mix even as it lifts volume [25].
• Structural decline of precious-metal flatware. Changing dining and gifting habits shrink the silverware segment.
• Skilled-labor scarcity. Bench jewelers, casters, and stone-cutters are aging out faster than they are replaced. Casting, stone setting, engraving, polishing, grading and repair require dexterity and accumulated knowledge; training may take at least a year [17].
• Preference shifts. Experiences-over-goods spending, minimalism, and secondhand/vintage demand can erode new-piece volume.
• Regulatory and reputational. Conflict-minerals, AML, sanctions, and disclosure failures carry legal and brand risk.
• Other material risks. Theft and security, supplier fraud, undisclosed treatments or synthetics, foreign exchange, customer concentration, fashion obsolescence, product returns, and environmental/workplace exposure from chemicals and fumes.

10. How to invest and the outlook

Public routes. There is no listed U.S. manufacturer to buy, so public exposure is indirect and demand-side:

• Jewelry retail/brand equities — Signet (SIG), Brilliant Earth (BRLT); watch-and-accessory marketers Movado (MOV) and Fossil (FOSL) as adjacent plays [6][8][9]. These are retail and brand bets, not factory bets.
• Global luxury parents — LVMH, Richemont, Swatch (foreign-listed / ADRs) for high-jewelry brand exposure.
• A distinct commodity bet — gold ETFs and miners give exposure to the metal, which is the opposite trade to owning a fabricator (a manufacturer wants stable, hedgeable metal prices, not a bull market in its input cost).
• Distressed special situations — Charles & Colvard (OTC: CTHR), now in Chapter 11, is distressed special-situation exposure, not a conventional listed comparable [10][21].

Private routes are where the actual industry is owned: acquiring or backing a trade supplier or contract manufacturer (the Richline/Stuller model), a branded direct-to-consumer maker, a refining/findings specialist, or the narrow Made-in-USA premium niche (e.g., domestic flatware). Expect thin fabrication margins, heavy and expensive working capital, real cyclicality, and value that lives in brand, design, and service rather than in the metal. The best diligence separates factory contribution from brand and retail markup and examines metal-price pass-through, scrap recovery, inventory aging, consigned inventory, customer concentration, supplier contracts, bench-skill retention, provenance systems, return and rework rates, capacity utilization and owner dependence.

Near-term drivers (forward-looking judgment). Record and elevated gold prices are pushing product mix toward lighter designs and lab-grown stones, supporting dollar sales while pressuring unit metal content [24]. Tariff normalization matters: after 2025's sharp increases on Indian goods — where much of the world's diamonds are cut — the two countries moved toward an ~18% rate in a February 2026 framework, easing (but not removing) input-cost pressure on U.S. makers who rely on imported stones [33]. Lab-grown share is likely to keep climbing, expanding affordability and volume while compressing ticket values [25][26]. A normalization in marriage counts would help the bridal base, and tariff-driven "reshoring" interest is real but, on current evidence, marginal against entrenched offshore cost advantages. Net: expect a stable-to-slowly-consolidating specialized manufacturing base under a larger, import-fed consumer market — a niche, cyclical, craft-and-scale industry rather than a growth sector.

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Sources

1. U.S. Census Bureau. County Business Patterns, 2023 (NAICS 339910: establishments, employment, annual payroll). 2025. https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau. 2022 Economic Census — receipts, firm counts, and concentration ratios (CR4/CR8/CR20/CR50, HHI), NAICS 339910. 2024. https://www.census.gov/programs-surveys/economic-census.html
3. Gemological Institute of America. Shenzhen, China's gem and jewelry industry (factory workflow documentation). https://www.gia.edu/gia-news-research/shenzhen-china-gem-jewelry-industry
4. NAICS Association / U.S. Census Bureau. NAICS 2022 Code 339910 — Jewelry and Silverware Manufacturing: definition, inclusions, cross-references. 2022. https://www.naics.com/naics-code-description/?code=339910
5. U.S. Census Bureau. 339910 — Jewelry and silverware manufacturing profile. https://data.census.gov/profile/339910_-_Jewelry_and_silverware_manufacturing?codeset=naics~339910
6. Signet Jewelers Ltd. Annual Report (Form 10-K), Fiscal Year 2025 (U.S. jewelry-and-watch market ~$63B; Signet share and brand mix). 2025. https://s26.q4cdn.com/755441662/files/doc_financials/annual/signet-annual-report-FY2025.pdf
7. Signet Jewelers Ltd. Form 10-K, Fiscal Year 2026 (lab-grown share, bridal share, seasonality, margin data). 2026. https://www.sec.gov/Archives/edgar/data/832988/000083298826000055/sig-20260131.htm
8. Brilliant Earth Group, Inc. Form 10-K, Fiscal Year 2024 (third-party manufacturing). 2025. https://www.sec.gov/Archives/edgar/data/1866757/000186675725000038/brlt-20241231.htm
9. Movado Group, Inc. Fourth Quarter and Fiscal Year 2025 Results. 2025. https://investors.movadogroup.com/news/news-details/2025/Movado-Group-Inc--Announces-Fourth-Quarter-and-Fiscal-Year-2025-Results/default.aspx
10. Charles & Colvard, Ltd. "Charles & Colvard, Ltd. Announces Delisting from Nasdaq." PR Newswire. 2025. https://www.prnewswire.com/news-releases/charles--colvard-ltd-announces-delisting-from-nasdaq-302434844.html
11. Richline Group (a Berkshire Hathaway company). About Richline Group. 2025. https://www.richlinegroup.com/about-us
12. Stuller, Inc. Corporate profile. https://www.stuller.com/About
13. Liberty Tabletop / Sherrill Manufacturing. Company site and Wikipedia (only U.S. maker of stainless flatware; Oneida offshoring, 2004). 2025. https://libertytabletop.com/sherrill-manufacturing/
14. Tiffany & Co. Form 10-K, Fiscal Year 2019 (internal manufacturing ~60% of jewelry sold). 2020. https://www.sec.gov/Archives/edgar/data/98246/000009824620000042/tif-2020131x10k.htm
15. LVMH. 2025 Universal Registration Document (Tiffany now reported within combined Watches and Jewelry). 2026. https://urd.lvmh.com/en/2025
16. U.S. Bureau of Labor Statistics. Occupational Employment and Wage Statistics, May 2022, NAICS 339910. https://www.bls.gov/oes/2022/May/naics5_339910.htm
17. U.S. Bureau of Labor Statistics. Occupational Outlook Handbook: Jewelers and Precious Stone and Metal Workers (self-employment share, employment projections, median wages). https://www.bls.gov/ooh/production/jewelers-and-precious-stone-and-metal-workers.htm
18. U.S. Small Business Administration. Table of Small Business Size Standards (NAICS 339910: 700 employees). 2023. https://www.sba.gov/document/support-table-size-standards
19. IBISWorld. Jewelry & Silverware Manufacturing in the US (NAICS 339910). 2025. https://www.ibisworld.com/classifications/naics/339910/jewelry-and-silverware-manufacturing/
20. Movado Group, Inc. Form 10-K, Fiscal Year 2025 (Asian contractor reliance). 2025. https://www.sec.gov/Archives/edgar/data/72573/000095017025054522/mov-20250131.htm
21. Nasdaq. Delisting notice for Charles & Colvard. 2025. https://www.nasdaq.com/press-release/charles-colvard-ltd-announces-delisting-nasdaq-2025-04-22; Charles & Colvard. Restructuring announcement. 2026. https://ir.charlesandcolvard.com/news-releases/news-release-details/charles-colvard-commences-voluntary-restructuring-process
22. Berkshire Hathaway Inc. 2025 Annual Report (Richline Group ownership). 2026. https://berkshirehathaway.com/2025ar/2025ar.pdf
23. Charles & Colvard, Ltd. Form 10-K, Fiscal Year 2024 (yield, cost structure, skills). 2025. https://www.sec.gov/Archives/edgar/data/1015155/000114036125012058/ef20029694_10k.htm
24. Forbes Advisor / Fortune. Gold Price data — record high $5,597/oz (Jan 29, 2026); ~$4,000/oz mid-2026; >$3,000/oz early 2025. 2026. https://www.forbes.com/advisor/investing/gold-price/
25. Rapaport / industry reporting. Lab-grown diamond share of U.S. engagement rings (~48%) and diamond jewelry (~42%). 2025–2026. https://rapaport.com/magazine-article/uncertainty-is-the-new-diamond-world-order/
26. Coherent Market Insights / CNBC Africa. Lab-grown diamond value chain — U.S. ~70% of global lab-grown jewelry sales; India/China production dominance. 2026. https://www.cnbcafrica.com/2026/the-lab-grown-monopoly-how-the-united-states-india-and-china-built-a-hermetic-value-chain
27. Gemological Institute of America. Bench tip: Discover the benefits of CAD-CAM. https://www.gia.edu/articles/bench-tip-discover-benefits-cad-cam
28. Federal Trade Commission. FTC Approves Final Revisions to Jewelry Guides. 2018. https://www.ftc.gov/news-events/news/press-releases/2018/07/ftc-approves-final-revisions-jewelry-guides
29. Financial Crimes Enforcement Network. Frequently Asked Questions: Dealers in Precious Metals, Stones, or Jewels. https://www.fincen.gov/resources/statutes-regulations/guidance/frequently-asked-questions
30. U.S. Securities and Exchange Commission. Conflict Minerals Small Entity Compliance Guide. https://www.sec.gov/resources-small-businesses/small-business-compliance-guides/conflict-minerals-disclosure
31. U.S. Department of State. Clean Diamond Trade Act and Kimberley Process. https://2001-2009.state.gov/e/eeb/diamonds/109349.htm
32. U.S. Department of the Treasury, OFAC. FAQ 1165: Russian diamond sanctions. https://ofac.treasury.gov/faqs/1165
33. 25HOURS. "US Jewelry Imports by Country Data: A 2026 In-Depth Analysis" (imports ~$11.5B; suppliers India/China/Thailand/Italy; 2025–2026 tariffs). 2026. https://25hours.net/blogs/insights/us-jewelry-imports-trade-data