A New York buyer was two days from wiring a 30% deposit to a silver ring factory that had sent a clean website, a 48-hour quote, and a video call. On the call, the salesperson refused to show the polishing room, kept panning back to the showroom, and could not name the lot number on the sample ring. The buyer paused the wire, asked for an independent third-party audit, and found the company was a trader reselling another factory's work. The deposit stayed home.

Most supplier failures are not fraud. They are over-promising: a small workshop quoting like a factory, a trader quoting like a manufacturer, a QC team that exists only on paper. This checklist covers the points that separate a real partner from a brochure.

1. Factory or Trader? Start Here

The first question is not price. It is whether you are talking to a factory or a trading company. Factories cast, polish, and set in-house. Traders resell. Both have a place, but the price, MOQ, and customization flexibility are different. Ask for the production floor on a live video walk-through. A real factory will walk you past casting molds, polishing barrels, and setting benches. A trader will show you a showroom. See our factory vs trader comparison for the full test.

2. Sample Consistency Is the Hardest Number to Fake

Ask for three samples of the same SKU, produced in different weeks. Weigh them with a gram scale, measure the stone size, and check the stamp. Weight variance over 5% across samples, or a stamp that shifts position, signals hand-finishing inconsistency. A factory that can run the same SKU within 2% weight tolerance is running controlled production. Our visual inspection points guide lists what to look at under a loupe.

3. Certifications and Compliance on Paper

Ask for the papers, not the logos. For silver and gold: assay certificates, 925 stamp compliance, and (for EU buyers) REACH and nickel-release test reports from a lab such as SGS or Intertek. For diamond or moissanite: check whether the supplier provides grading reports consistent with IGI or GIA 4Cs standards. Logos on a website are free; dated lab reports tied to a lot number are not. EU importers should also read REACH and nickel release.

4. Capacity, Lead Time, and Peak Season

A factory that can make 200 pieces a week in March may be at 80% capacity by October. Ask: current weekly output, current order book load, and lead time during Q4. If they quote 15 days in March, ask what it becomes in October. Capacity that sounds unlimited on a video call becomes a real constraint when holiday season hits. Ask for a written capacity forecast for the next quarter before you commit to a Q4 order.

5. QC Records and Rejection Policy

Ask to see the last three QC reports on a similar SKU. Real factories track rejection rates by defect: polishing scratch, stone loose, plating thin, stamp wrong. A rejection rate over 3% on a standard SKU is a warning. Also ask: what is the rejection policy on arrival? Do they remake, credit, or replace? Get it in writing on the proforma invoice. Our quality dispute steps guide shows what to do after a defect arrives.

6. References, Payment, and Red Flags

Ask for two references in your market or region. Call them. Watch for these red flags: pressure to wire fast, refusal to use escrow or LC, a quote that drifts below the market floor, an email address that does not match the company domain, and a salesperson who cannot answer a technical question about their own product. The red flags in factory vetting piece lists the full set.

FAQ

Is a video call enough to verify a factory?

No. A video call can be staged in a borrowed showroom. Ask for a live walk-through of the production floor, with the camera pointed at equipment and lot tags, not just finished jewelry.

How many samples should I test before a bulk order?

Ask for three samples of the same SKU from different production runs. Weight, stone size, and finish should stay within tight tolerance. One sample is a marketing item; three samples show consistency.

What certifications should a silver jewelry factory have?

At minimum, assay or metal-content test reports and, for EU buyers, REACH and nickel-release reports. Certifications should be dated and tied to a production lot, not just a logo on a website.

What is a normal rejection rate for a wholesale order?

Under 2% on a standard SKU is good. 2-3% is normal for a first run. Above 5% suggests process problems. Confirm the rejection policy in writing before the PO.

Should I use a third-party inspection company?

Yes for orders over $3,000-$5,000. A pre-shipment inspection by SGS, Intertek, or Bureau Veritas costs a few hundred dollars and catches defects before the goods leave the factory.

Vetting a new supplier? HOLYCOME welcomes factory audits: live video walk-throughs, sample sets, dated QC reports, and pre-shipment inspection coordination. Ask for the audit pack on your next quote and compare it line by line.