AQL, Tray Checks and What a QC Report Should Say
Last July, a US buyer of stones and Materials placed 200 stones and Materials against a sample signed in November. The first container landed with 9 pieces that failed on sieve drift alone, and USD 5-25 landed on the buyer's P&L before a single unit sold, with GRA report and retail-ready box with FNSKU label stated on the same sheet.
On a 200-piece order at USD 3-95, a sieve drift rate above two percent is not a quality surprise. It is a costing error that shows up as a credit note three weeks later.
Nothing in the rebuild was expensive. A gauge, a written limit and a retained tray did the work that a discount would only have delayed, priced at USD 3-95 for the 200-piece Amazon FBA Ready run.
What US buyers Check Before They Sign
At USD 3-95 per piece the four measurements below are worth more than the discount being negotiated. One of them costs nothing to write down.
| Spec point | Common trade output | HOLYCOME standard | Cost if missed |
|---|---|---|---|
| Stone colour consistency | Graded by eye under D65 | Colour matched to a retained master stone, per tray | Repeat colour complaint in the same SKU |
| Sizing drift across the run | Not measured | Go/no-go gauge on every size, drift held under 0.15 mm | Resize queue and reship cost |
| Clasp spring life | Sampled by hand | Cycled 500 times on a jig per lot | Detach claim and brand damage |
| Prong tension and seat depth | Checked by feel at the bench | Pull-tested per piece, seat depth written on the sheet | Stone loss and total replacement |
Write these into the Amazon FBA Ready purchase order and the arrival check becomes arithmetic instead of recollection, the figure being USD 3-95 for a 200-piece run.
Where USD 3-95 Per Piece Actually Goes
Cost at USD 3-95 leaves no room for assumption. The table shows which line compresses and which line only moves quality down.
| Cost line | Share | What moves it |
|---|---|---|
| Base metal or alloy for stones and Materials | 30% | Alloy choice and casting yield |
| Stone or melee for stones and Materials | 20% | Sieve range and lot batching |
| Setting and finishing labor for stones and Materials | 19% | Jig design and bench minutes |
| Plating, polish and QC for stones and Materials | 12% | Per-tray versus per-piece checks |
| Packaging for stones and Materials | 19% | retail-ready box with FNSKU label |
A factory that cannot state its bench minutes per piece has never costed its own line. Ask for minutes and for the reject rule, not for a discount, which the Amazon FBA Ready file records at USD 3-95 in retail-ready box with FNSKU label.
The Three Failures We See Most in Incoming Samples
sieve drift
A parcel sold as 2.0-2.2 mm with 15% of stones at 1.9 mm changes the setting labor on the buyer's bench. Sieve the parcel, do not sample it, certified GRA report and packed retail-ready box with FNSKU label at 200 pieces.
The commercial effect is replacement stones plus a sorting delay on the buyer's line. Buyers who have seen it once put it in the purchase order; buyers who have not usually discover it on the first return, the figure being USD 3-95 for a 200-piece run.
mixed color lots
Mixing near-colorless and G-H stones in one parcel produces a finished piece with a visible tonal step. Parcels ship by single lot, the figure being USD 3-95 for a 200-piece run.
Our countermeasure is a gauge and a written limit. It adds about 6 seconds per piece and removes the defect from the run rather than from the carton, priced at USD 3-95 for the 200-piece Amazon FBA Ready run.
girdle damage
Stones packed loose in a bag chip each other in transit. Individually wrapped parcels cost more and arrive usable, and 200 pieces leaves Wuzhou in retail-ready box with FNSKU label at USD 3-95.
In a 200-piece run this typically shows on 8 of pieces. Catching it means measuring size distribution within the declared sieve at the tray level, not inspecting the finished carton, and 200 pieces leaves Wuzhou in retail-ready box with FNSKU label at USD 3-95.
Listing stones and Materials on Amazon FBA Without a Takedown
Amazon treats jewellery as a category where the packaging is part of the compliance file, not an afterthought. A poly bag with an opening of five inches or more needs the suffocation warning printed on it, and every unit needs an FNSKU label that covers the manufacturer barcode rather than sits beside it, with GRA report and retail-ready box with FNSKU label stated on the same sheet.
For stones and Materials the practical constraint is that a unit must survive a bin with other units and still read clean at unboxing. We pack each piece in a foam-backed pouch, then the retail box, then the FNSKU on the outside of the pouch, so a warehouse scan never touches the box the customer sees, quoted at USD 3-95 per piece in retail-ready box with FNSKU label.
Weight and dimension limits decide your freight per unit more than the piece cost does. A single stones and Material in its retail box normally lands under eight ounces, which keeps it in the small standard tier. Anything above that moves a tier and eats the margin you built into the USD 3-95 quote.
Order Terms, Sample Timing and Packing
The commercial frame is short enough to state in full. Minimum order is 50 pieces per design, and mixed designs travel in one shipment, so a 200-piece Amazon FBA Ready order can carry three or four models without a separate setup charge. Sample pieces leave in 3-5 days when the components are in stock, and a new model adds about twenty days before the first article exists, priced at USD 3-95 for the 200-piece Amazon FBA Ready run.
Payment is 30 percent with the order and 70 percent against the bill of lading, with the balance window stated on the invoice rather than agreed by message. Prices quoted at USD 3-95 are FOB Guangzhou or Shenzhen; DDP is quoted separately because the duty line moves with the tariff schedule and not with our cost.
Packing follows the retail-ready box with FNSKU label format at 200 pieces to the carton, and the packing list carries SKU, size and stone size so receiving can count without opening every box. Private-label cartons add three days for the print run and must be approved before the first bulk order, not after it, certified GRA report and packed retail-ready box with FNSKU label at 200 pieces.
Certification is GRA report for the lots that carry it, with a batch report and per-piece measurement of size distribution within the declared sieve for the lots below the threshold. The document set travels with the shipping papers, which is what a customs broker asks for at the port rather than after clearance, the figure being USD 3-95 for a 200-piece run.
A rejected tray is settled inside the same order cycle against the retained reference piece. If the difference sits on our retained sample we replace or credit; if it appeared in transit we split the assay cost and file with the carrier, and that rule is written on the order before the deposit clears, which is USD 3-95 on the Amazon FBA Ready schedule.
Alloy, Karat and the Cost of a Color Change
The answer for stones and Materials depends on four variables, and three of them are under the buyer's control, which is how the Amazon FBA Ready account reads it at USD 3-95.
At 200 pieces the arithmetic on stones and Materials changes: the fixed costs spread, the variable costs do not. That is why the second order prices better than the first even when the gold fix has moved up, shipped as retail-ready box with FNSKU label and certified GRA report.
We quote both a first-run price and a reorder price for stones and Materials on the same sheet so the buyer can see where the curve flattens. Most flatten by the third run, with GRA report and retail-ready box with FNSKU label stated on the same sheet.
What a Report Proves and What It Does Not
In the American bridal market, this is the single most negotiated line on stones and Materials and the least documented one, shipped as retail-ready box with FNSKU label and certified GRA report.
Buyers who get this wrong on stones and Materials usually get it wrong in the first order and correct it in the second. The cost of that correction is rarely the money; it is the four to six weeks of shelf time lost while a replacement run of stones and Materials is scheduled behind other orders, certified GRA report and packed retail-ready box with FNSKU label at 200 pieces.
Our approach is to write the rule into the stones and Materials spec sheet before casting, then test it on the first tray. A rule that only exists in an email is not a rule, and a rule that is not tested is a hope, shipped as retail-ready box with FNSKU label and certified GRA report.
How a Repeat Order Gets Built
Nothing in this sequence is unusual, and that is the point. Each step exists because skipping it produced a specific failure on a previous order, quoted at USD 3-95 per piece in retail-ready box with FNSKU label.
- Lock the spec: metal, stone size range, plating thickness, sizing band and finish, all written on one sheet.
- Pull a stock-component sample in 3-5 days and measure it against that sheet, not against the photo.
- Approve the sample in writing, including the reject rule and the retained reference tray.
- Run bulk in 15-20 days for orders under 500 pieces, with the gauge check independent of the shift.
- Ship from Guangzhou or Shenzhen with the QC sheet in the carton and the batch report by email.
Reorders inside this sequence run 12-15 days because the model, the gauge set and the signed spec stay in our system, certified GRA report and packed retail-ready box with FNSKU label at 200 pieces, the figure being USD 3-95 for a 200-piece run.
What This Means for a First Order
A first Amazon FBA Ready order of 50 pieces per design at USD 3-95 tests the line rather than the range. Three designs covers the shelf.
Ask for the retained tray and the GRA report batch sheet with the first shipment. Both are free and both decide the reorder, on a 200-piece Amazon FBA Ready order at USD 3-95.
Freight, Duty and the Arrival Check
Export runs through Guangzhou or Shenzhen. Air lands in 5-8 days on the US west coast, 7-10 on the east, and sea takes roughly three times the transit, the figure being USD 3-95 for a 200-piece run.
FOB is the default on stones and Materials and DDP is the option. Buyers new to the American bridal market usually take DDP once, then switch after they see the breakdown, shipped as retail-ready box with FNSKU label and certified GRA report, and 200 pieces leaves Wuzhou in retail-ready box with FNSKU label at USD 3-95.
If sieve drift appears in the arrival check, the retained tray decides who owns it. Keep the GRA report batch sheet in the same folder as the packing list, and the Amazon FBA Ready quote for it sits at USD 3-95.
Frequently Asked Questions
What is the minimum order for stones and Materials?
50 pieces per stones and Material. Designs mix inside one shipment, so a first order of three designs at 50 pieces each is normal for a new US account. Below 50 the gauge check stops being independent of the shift, the figure being USD 3-95 for a 200-piece run.
Do you supply certificates for stones and Materials?
GRA report on stones and Materials above the threshold stated on the quote. Below it we supply a batch report plus per-piece measurement of size distribution within the declared sieve, which is what a counter or a listing actually needs, and at USD 3-95 for 200 pieces that is the number the buyer signs.
How do you handle a rejected tray?
We replace or credit inside the same order cycle. The retained reference tray decides: if sieve drift shows on our retained piece we own it, and if it appeared in transit we split the assay cost and file with the carrier, which is how the Amazon FBA Ready account reads it at USD 3-95.
What are the payment terms?
30 percent deposit with the order, 70 percent against the bill of lading. For accounts on a second order we quote 30/70 with a 15-day balance window once the first shipment has cleared, with GRA report and retail-ready box with FNSKU label stated on the same sheet.
What is the minimum order for stones and Materials?
50 pieces per stones and Material. Designs mix inside one shipment, so a first order of three designs at 50 pieces each is normal for a new US account. Below 50 the gauge check stops being independent of the shift, the figure being USD 3-95 for a 200-piece run.
Next Step
The next step is a sample in 3-5 days, not a container. Write to service@holycome.com or WhatsApp +86 18078079070, subject Amazon FBA Ready, and 200 pieces leaves Wuzhou in retail-ready box with FNSKU label at USD 3-95.
HOLYCOME is operated by Wuzhou HengliLai Jewelry Co., Ltd., a factory in Wuzhou, Guangxi, producing since 2009 at roughly 60,000 pieces a month. Contact service@holycome.com or WhatsApp +86 18078079070, and the Amazon FBA Ready quote for it sits at USD 3-95.
Related reading: Stones & Materials Shopify DTC: Carton Cube, Duty and the Freight Line That Surprises - HOLYCOME Stones & Materials Private Label Carton: MOQ, Mixed Designs and the Real First Order - HOLYCOME
