Both stones are synthetic, both are durable, and both are certified — but they occupy different positions in a wholesale catalogue and attract different buyers. Choosing wrongly means either dead stock or a missed margin opportunity.

Head-to-head specification

Property	Moissanite	Lab grown diamond
Hardness (Mohs)	9.25	10
Refractive index	2.65–2.69 (higher)	2.42
Dispersion (fire)	Very high, rainbow flashes	High, white brilliance
Typical wholesale cost	Low	Mid to high
Certification	GRA (common), in-house sheet	IGI / GIA with inscription
Color range	Colorless to fancy (champagne, blue, green)	D–H typical, fancy available
Best retail price band	Accessible bridal, fashion, gifts	Premium bridal, milestone purchases
Resale expectation	None	Limited

The stocking ratio that works for most importers

Across our trade accounts, the pattern that performs is roughly 70/30 by unit volume in favour of moissanite, with moissanite carrying the volume and lab grown diamond carrying the ticket size. Moissanite converts new customers who were not planning to buy a diamond; lab grown diamond converts customers who were already shopping for one.

Moissanite: engagement rings, eternity bands, tennis bracelets, stud earrings, fashion pendants.
Lab grown diamond: solitaire engagement rings, bridal sets, high-carat pendants, milestone gifts.
Mixed: halo designs and three-stone rings, where you can offer the same silhouette at two price points.

Detecting moissanite and diamond in the trade

A standard diamond tester will read moissanite as diamond because of overlapping thermal conductivity. Use a multi-tester that measures electrical conductivity as well, and always verify a stone against its certificate inscription under magnification. This matters when you resell or when a customer returns an item.

Marketing angle for each

Moissanite sells on brilliance, ethics and price: "the same look, a fraction of the price". Lab grown diamond sells on authenticity and certification: "a real diamond, grown not mined, with an IGI certificate". Keep the two scripts separate — combining them confuses the customer and weakens both.

Ordering both from one factory

Sourcing both materials from a single supplier simplifies your quality control: one master sample file, one packing standard, one shipping schedule. We produce both lines in the same facility, so you can split a shipment between moissanite and lab grown diamond without two sets of freight and customs paperwork.

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

Moissanite Supplier & Manufacturer — 210 ready designs, MOQ from 10 pcs.
Moissanite Rings — 222 ready designs, MOQ from 10 pcs.
Loose Moissanite Stones — 10 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.