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Loose Lab Grown Diamond Stones, Calibrated by Shape

Loose Lab Grown Diamond Stones, Calibrated by Shape Valentine Program: AQL, Tray Chec - HOLYCOME

Holycome Trade Desk · November 9, 2026 · 9 min read

Loose Lab Grown Diamond Stones, Calibrated by Shape: tolerances, cost structure and the reject rule for US wholesale buyers.

Loose Lab Grown Diamond Stones, Calibrated by Shape Valentine Program: AQL, Tray Chec - HOLYCOME

Why the Valentine Program Quote Looks Cheap Until It Lands

In September, a US buyer of loose Lab Grown Diamond Stones, Calibrated by Shape ordered 300 loose Lab Grown Diamond Stones, Calibrated by Shape and asked for the same calibrated sizes from 1.5 mm to 12 mm as a competitor's sample. What arrived matched the photo and missed the drawing, and 13 pieces had to be reworked at the buyer's expense, which is USD 3-106 on the Valentine Program schedule.

Nothing in that rejection was exotic. At USD 3-106 per piece and 300 pieces on the order, a sieve drift rate of two percent is a costing error rather than a quality mystery.

Loose Lab Grown Diamond Stones, Calibrated by Shape wholesale piece from the HOLYCOME line in Wuzhou

Cost of the fix was about 6 seconds per piece. On 300 pieces that is a few hours at the bench and the whole claim file disappears, the figure being USD 3-106 for a 300-piece run.

The Measurements Behind a USD 3-106 Quote

Four numbers separate a 300-piece run that clears inspection from one that generates a credit note. None of them appears on the sample photo, which the Valentine Program file records at USD 3-106 in heart gift box.

Spec pointCommon trade outputHOLYCOME standardCost if missed
Hallmark depth and placementStamped where it fitsFixed position, depth measured so it never breaks the shankCustoms query and remaking
Solder flow at the jointNot inspectedJoint inspected under 10x before settingCrack at the seam in transit
Plating thicknessNominal only0.20 micron rhodium logged per lot, 3 microns on vermeilWear-through inside one season
Surface porosity after polishSeen after platingCast porosity checked before plating, rejects pulled at that stagePlating blister six weeks later

None of these are premium features. They cost seconds per piece and they remove the reason a buyer has to inspect twice, the figure being USD 3-106 for a 300-piece run.

What a USD 3-106 Quote Hides

The cost of a loose Lab Grown Diamond Stones, Calibrated by Shape in the USD 3-106 band splits roughly as below. The line buyers challenge most is labor, and it is the line that decides whether the piece survives a season.

Loose Lab Grown Diamond Stones, Calibrated by Shape setting and finish detail on a HOLYCOME factory sample
Cost lineShareWhat moves it
Base metal or alloy for loose Lab Grown Diamond Stones, Calibrated by Shape34%Alloy choice and casting yield
Stone or melee for loose Lab Grown Diamond Stones, Calibrated by Shape25%Sieve range and lot batching
Setting and finishing labor for loose Lab Grown Diamond Stones, Calibrated by Shape22%Jig design and bench minutes
Plating, polish and QC for loose Lab Grown Diamond Stones, Calibrated by Shape15%Per-tray versus per-piece checks
Packaging for loose Lab Grown Diamond Stones, Calibrated by Shape4%heart gift box

If a supplier will not break out the five lines above, the number you are comparing is not a price. It is a total that somebody else assembled from assumptions, and at USD 3-106 for 300 pieces that is the number the buyer signs.

MOQ, Samples and the Balance

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 300-piece Valentine Program 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, with IGI report and heart gift box stated on the same sheet.

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 3-106 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 heart gift box format at 300 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, and at USD 3-106 for 300 pieces that is the number the buyer signs.

Certification is IGI 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, and at USD 3-106 for 300 pieces that is the number the buyer signs.

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, and 300 pieces leaves Wuzhou in heart gift box at USD 3-106.

What Fails First on loose Lab Grown Diamond Stones, Calibrated by Shape

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, on a 300-piece Valentine Program order at USD 3-106.

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, quoted at USD 3-106 per piece in heart gift box.

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, with IGI report and heart gift box stated on the same sheet.

In a 300-piece run this typically shows on 17 of pieces. Catching it means measuring size distribution within the declared sieve at the tray level, not inspecting the finished carton, quoted at USD 3-106 per piece in heart gift box.

girdle damage

Stones packed loose in a bag chip each other in transit. Individually wrapped parcels cost more and arrive usable, the figure being USD 3-106 for a 300-piece run.

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, with IGI report and heart gift box stated on the same sheet.

AQL, Tray Checks and What a QC Report Should Say

Buyers in US e-commerce tend to over-index on unit price for loose Lab Grown Diamond Stones, Calibrated by Shape and under-index on what happens after delivery, which is USD 3-106 on the Valentine Program schedule.

At 300 pieces the arithmetic on loose Lab Grown Diamond Stones, Calibrated by Shape 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, on a 300-piece Valentine Program order at USD 3-106.

We quote both a first-run price and a reorder price for loose Lab Grown Diamond Stones, Calibrated by Shape on the same sheet so the buyer can see where the curve flattens. Most flatten by the third run, shipped as heart gift box and certified IGI report.

Carton Cube, Duty and the Freight Line That Surprises Buyers

This is where loose Lab Grown Diamond Stones, Calibrated by Shape stops being a commodity and starts being a supply relationship, which is USD 3-106 on the Valentine Program schedule.

One practical note on timing for loose Lab Grown Diamond Stones, Calibrated by Shape: the calendar starts when the spec is signed, not when the deposit clears. A buyer who signs in week one and pays in week three gets the goods in week five, and 300 pieces leaves Wuzhou in heart gift box at USD 3-106.

We date the loose Lab Grown Diamond Stones, Calibrated by Shape proforma from signature for that reason, and we state the deposit deadline in the same email that carries the spec sheet, and at USD 3-106 for 300 pieces that is the number the buyer signs.

Valentine Window for loose Lab Grown Diamond Stones, Calibrated by Shape

The Valentine window is short and unforgiving: stock has to be in the warehouse by the last week of January or the season is gone. That puts the production order in the second week of December, ahead of the Lunar New Year slowdown, quoted at USD 3-106 per piece in heart gift box.

Paired designs move better than single pieces here. A matching pair of loose Lab Grown Diamond Stones, Calibrated by Shape, boxed together with two cards, converts at the same retail price as two singles and costs about nine percent more to make, with IGI report and heart gift box stated on the same sheet.

Photography has to be red-and-white neutral. A loose Lab Grown Diamond Stones, Calibrated by Shape shot on a red silk background reads as a gift in a listing thumbnail, and that is the only image most buyers will ever see, shipped as heart gift box and certified IGI report.

From Spec to heart gift box

The calendar below is what we quote on a 300-piece Valentine Program run of loose Lab Grown Diamond Stones, Calibrated by Shape. It starts when the spec is signed, not when the deposit clears, which the Valentine Program file records at USD 3-106 in heart gift box.

  1. Lock the spec: metal, stone size range, plating thickness, sizing band and finish, all written on one sheet.
  2. Pull a stock-component sample in 3-5 days and measure it against that sheet, not against the photo.
  3. Approve the sample in writing, including the reject rule and the retained reference tray.
  4. Run bulk in 15-20 days for orders under 500 pieces, with the gauge check independent of the shift.
  5. Ship from Guangzhou or Shenzhen with the QC sheet in the carton and the batch report by email.

A first order of 50 pieces is a measurement, not a purchase. It tells you what size distribution within the declared sieve looks like from this bench, on a 300-piece Valentine Program order at USD 3-106.

A 300-Piece Test Run

At 300 pieces inside heart gift box, the first order reads sell-through without betting the season on one model, shipped as heart gift box and certified IGI report.

Buyers who run that measurement before committing a season usually keep the supplier. Buyers who skip it usually pay twice for the same lesson, which is how the Valentine Program account reads it at USD 3-106.

The Dock Check on loose Lab Grown Diamond Stones, Calibrated by Shape

We ship from Guangzhou or Shenzhen and pick the port on the carrier rate, not on habit. IGI report travels with the shipping documents, and the Valentine Program quote for it sits at USD 3-106.

DDP removes the duty invoice that arrives after the carton clears, which matters on a first Valentine Program order at USD 3-106.

Three steps at the dock: count against the packing list, weigh a sample tray, measure ten pieces. None needs a lab, and the Valentine Program quote for it sits at USD 3-106.

Frequently Asked Questions

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, which the Valentine Program file records at USD 3-106 in heart gift box.

What is the minimum order for loose Lab Grown Diamond Stones, Calibrated by Shape?

50 pieces per loose Lab Grown Diamond Stones, Calibrated by Shape. 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, on a 300-piece Valentine Program order at USD 3-106.

Do you supply certificates for loose Lab Grown Diamond Stones, Calibrated by Shape?

IGI report on loose Lab Grown Diamond Stones, Calibrated by Shape 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, quoted at USD 3-106 per piece in heart gift box.

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, shipped as heart gift box and certified IGI report.

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, which the Valentine Program file records at USD 3-106 in heart gift box.

Next Step

If you are quoting loose Lab Grown Diamond Stones, Calibrated by Shape against another supplier, send that quote. We will mark the four lines where the numbers diverge and let you decide, which the Valentine Program file records at USD 3-106 in heart gift box.

The factory behind loose Lab Grown Diamond Stones, Calibrated by Shape here is Wuzhou HengliLai Jewelry Co., Ltd., operating since 2009 in Wuzhou, Guangxi, at roughly 60,000 pieces a month. Reach the export desk at service@holycome.com or +86 18078079070 on WhatsApp, and at USD 3-106 for 300 pieces that is the number the buyer signs.

Related reading: Loose Lab Grown Gemstones Made to Order: Carton Cube, Duty and the Freight Line That - HOLYCOME Loose Lab Grown Gemstones Trade Show Sample: MOQ, Mixed Designs and the Real First Or - HOLYCOME

Topics: Loose Lab Grown Diamond Stones, Calibrated by Shape Valentine Program

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Written by the Holycome manufacturing & quality team. Every figure and claim in this article comes from our own production floor in Wuzhou, China — in-house casting, stone setting and a three-pass quality inspection we have run since 2008.

Materials are tested for nickel, lead and cadmium release by SGS and CTT International; moissanite centre stones ship with their GRA warranty card and report. We also hold an independent SMETA / Sedex ethical-trade audit and a Hong Kong Customs AML registration.

Reviewed for accuracy by our quality team before publication. Last updated .

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