Karat selection is one of the most consequential specification decisions in gold jewelry manufacturing. It changes cost, wear behaviour, color and legal compliance.

Karat compared

Karat	Gold content	Character	Typical markets
10K	41.7%	Hardest wearing, palest yellow, lowest cost	United States value lines
14K	58.3%	Balanced durability and color, most common	US, UK, Australia mainstream
18K	75.0%	Rich color, softer, premium feel	Europe, Middle East, Asia premium
22K	91.7%	Very rich color, soft, scratch-prone	India, Middle East traditional
24K	99.9%	Pure, very soft — not suitable for setting stones	Investment, traditional bullion jewellery

How karat changes your unit cost

Alloy cost scales roughly linearly with gold content, but labour and stone costs do not. That means the price gap between 10K and 18K narrows on stone-heavy designs and widens on plain bands. When your target retail price is tight, switching a plain band from 18K to 14K is often the cleanest way to hit it.

Durability and wear

Lower karat means more alloy, which means higher hardness and better resistance to scratching and deformation. For pieces worn daily — wedding bands, engagement rings with thin shanks, children’s jewellery — 10K and 14K usually outperform 18K in service life.

Color reality

18K yellow gold reads noticeably warmer and deeper than 14K or 10K. Rose gold color depends more on the copper content of the alloy than on karat: a well-formulated 14K rose can look deeper than a poorly formulated 18K rose. Specify the color against a physical master sample, never from a name.

Hallmarking and legal requirements

United States: quality mark required (10K, 14K, 18K) plus a maker’s mark.
United Kingdom: independent assay office hallmark is legally required.
European Union: member-state rules on fineness marks and hallmarking apply.
Most markets: the tolerance on declared fineness is enforced, so confirm the alloy with your refiner.

Nickel and allergen policy

White gold is usually alloyed with palladium or nickel, and nickel release is regulated in the EU. If you sell into Europe, specify nickel-free white gold alloy or palladium-based white gold, and require a written alloy declaration.

What to specify in your purchase order

Item	Specification to write
Karat	Exact karat, no substitution without written approval
Color	Matched to approved physical master sample
Alloy	Nickel-free if EU-bound; palladium white gold for premium
Plating	Rhodium on white gold; state thickness in microns
Hallmark	Your mark or ours; assay documentation on request
Tolerance	Weight tolerance per piece, typically ±5%

What to put in your purchase specification

Before you place a wholesale order, write the specification down and make the factory confirm it in writing. Every dispute we see between a buyer and a supplier traces back to a vague or missing specification sheet. The following items are the ones that actually cause problems when they are left open:

Item	What to state
Stone grade	Colour and clarity range, plus the tolerance you will accept against the approved master sample (±1 grade is standard)
Metal and purity	Exact karat or silver fineness, alloy type, and whether white gold is nickel-free
Plating	Type (rhodium, 18K gold) and thickness in microns — a thin flash plating wears through in months
Dimensions	Band width, stone measurement, chain length, and the weight tolerance per piece
Setting method	Prong, bezel, channel or pavé — this single choice can double labour cost
Packing	Poly bag, box, pouch, tag, barcode label, and how many pieces per carton
Documents	Which certificates, and whether you need a material declaration or assay report

MOQ, lead time and payment terms

Our standard terms across the catalogue are straightforward, and they are the same terms we quote in writing rather than adjusting per enquiry:

MOQ — 10 pieces per design for stock specifications, 50 pieces for mixed-design lots. Custom development starts from 30 pieces per style in 925 silver and 10 pieces in gold.
Tiered pricing — list price to 49 pieces, about 8% off from 50 pieces, about 14% off from 200 pieces, and negotiated pricing above 500 pieces with reserved production capacity.
Lead time — 7–15 days for stock designs, 10–20 days for custom or certified production runs. Add 3–7 days for express transit to Europe and North America.
Payment — 30% deposit with the balance before shipment, by T/T, PayPal, Western Union or Alibaba Trade Assurance.
Samples — single samples ship at list price and the cost is credited against your first order above 200 pieces.
Quality guarantee — 30-day return window on stock items, and a written remanufacture-or-credit commitment if a parcel falls outside the approved tolerances.

Quality control: what happens before your parcel leaves

Buyers who have been burned before usually want to know exactly what inspection was performed. This is our standard sequence on every wholesale order, whether it is 20 pieces or 2,000:

Incoming stone grading. Every parcel is checked for colour, clarity and measurement against the order sheet before it enters the setting line. Rejected stones are pulled, not downgraded and used anyway.
In-process inspection. Setters check prong security, stone alignment and surface finish at each station rather than at the end of the line.
Final QC under 10× magnification. Polish, plating thickness, clasp and hinge function, and hallmark accuracy are verified piece by piece.
Cleaning, photographing, packing. Pieces are cleaned, photographed against your PO number, and packed in individual poly bags inside export cartons.
Document preparation. Commercial invoice, packing list, certificate copies and — where required — a material declaration stating that the stones are laboratory-grown.

You receive the photographs and the packing list before the parcel ships, so you can flag anything before it leaves rather than after it arrives.

Frequently asked questions

Can I mix metals and stone grades in one order?

Yes. You can combine 925 sterling silver, 10K, 14K and 18K gold in the same production run, and specify different colour and clarity grades per line. Every combination is confirmed on a single approval sheet before production starts, so there is no ambiguity about which line is which.

How consistent is grading across repeat orders?

Repeat orders are graded against the master sample kept on file under your account, which is why buyers who reorder regularly see far less variation than buyers who switch suppliers each season. Tolerances are written into the approval sheet, so a reorder cannot drift without your written agreement.

Do you provide photography for my online store?

Every catalogued design has front, three-quarter and macro imagery in sRGB at print resolution, named to match the SKU so the assets map straight into your product database. For orders above 200 pieces we photograph your private-label version at no additional cost.

What happens if the goods do not match the sample?

Send photographs and the SKU list within 14 days of delivery. If the deviation exceeds the tolerances on your approval sheet, we remake the affected pieces or issue a credit — this is covered by our written quality guarantee and applies to every order, not only the first one.

Related wholesale collections

10K/14K/18K Gold Jewelry Manufacturer — 10 ready designs, MOQ from 10 pcs.
18K Gold Jewelry — 29 ready designs, MOQ from 10 pcs.
14K Gold Jewelry — 1 ready designs, MOQ from 10 pcs.
Rings — 273 ready designs, MOQ from 10 pcs.

Authoritative References

For buyers who need to verify the technical and regulatory basis of this guide, the following independent institutions publish authoritative reference data:

ISO 9001 Quality Management - the international standard for consistent production quality.
Wikipedia: Jewellery - manufacturing processes, materials and global trade background.