Moissanite is silicon carbide, not diamond and not cubic zirconia. It is harder than any other simulant, has more dispersion (fire) than diamond, and costs a fraction as much. For wholesale buyers the practical questions are which grade to buy and how to specify it.
The 4Cs, applied to moissanite
| Attribute | What to specify | Commercial note |
|---|---|---|
| Cut | Round brilliant or specified fancy shape; "Hearts & Arrows" on request | Cut drives brilliance more than any other factor |
| Colour | D–F (colourless) or G–J (near-colourless) | D–F carries a premium; G–J is fine for most fashion lines |
| Clarity | VVS or VS, eye clean | Moissanite is normally eye clean; inclusions are rare |
| Carat | Specify in millimetres for melee, carat for centre stones | Moissanite is lighter than diamond: 6.5 mm round ≈ 1.0 ct equivalent |
Moissanite compared
| Property | Moissanite | Lab grown diamond | Cubic zirconia |
|---|---|---|---|
| Composition | Silicon carbide | Carbon | Zirconium dioxide |
| Hardness (Mohs) | 9.25 | 10 | 8–8.5 |
| Refractive index | 2.65–2.69 | 2.42 | 2.15–2.18 |
| Dispersion (fire) | 0.104 — highest | 0.044 | 0.058–0.066 |
| Durability for daily wear | Excellent | Excellent | Poor — clouds and scratches |
| Cost at 1 ct equivalent | Low | Higher | Lowest |
Which grades are worth paying for
- Always pay for cut. A well-cut G-colour stone outperforms a poorly cut D-colour stone in the hand, every time.
- Colour: buy to your channel. Bridal and premium retail justify D–F. Marketplace and gift lines sell perfectly well at G–J.
- Clarity: VVS is rarely necessary. VS is eye clean and cheaper; the saving is better spent on cut or setting quality.
- Certification: selective. GRA on volume lines, explicit grading on centre stones above 0.5 ct equivalent.
Common mistakes buyers make
- Specifying carat weight without millimetres — moissanite density differs from diamond, so the two are not interchangeable.
- Comparing quotations without fixing colour and clarity first, which makes the cheaper quote look like a better deal.
- Buying the lightest possible setting to hit a price point; prong and shank weight drives how long the piece survives daily wear.
- Assuming all plating is equal. Rhodium below roughly 0.1 microns wears through on rings within months.
- Mixing moissanite and cubic zirconia in one order without a written specification, then receiving CZ melee by mistake.
A specification template you can reuse
Stone: moissanite, D–F colour, VS clarity, round brilliant cut, 6.5 mm (1.0 ct equivalent), GRA certificate; metal: 925 sterling silver, rhodium plated min. 0.1 micron, nickel-free; setting: four-prong; weight: 2.8 g ±5%; packing: individual poly bag, branded card; MOQ 20 pcs; lead time 7–15 days.
Send that sentence to any supplier and compare the replies. The differences you see will be specification differences, not pricing magic.
Sizing moissanite against diamond equivalents
| Round size (mm) | Diamond carat equivalent | Typical wholesale use |
|---|---|---|
| 4.0 mm | 0.25 ct | Stud earrings, accent stones |
| 5.0 mm | 0.50 ct | Entry bridal, studs |
| 6.5 mm | 1.00 ct | The volume bridal size |
| 8.0 mm | 2.00 ct | Statement bridal, gifting |
| 9.0 mm | 2.75 ct | Statement rings, pendants |
Because moissanite has a lower specific gravity than diamond, the two do not share carat weights at the same measured size. Specify millimetres when the visual size matters, carat equivalent when your customer buys by the familiar number.
Choosing a setting for a moissanite centre stone
Moissanite is durable at 9.25 Mohs, but it is not indestructible and its high dispersion means the cut quality is visible from across a counter. For a centre stone of 6.5 mm or above, specify a four- or six-prong setting with a protective gallery, and avoid tension settings for stones over 7 mm. For melee, pavé and channel settings work well provided the metal is thick enough to hold the stones — under-weight channels lose stones and generate the returns that erase a wholesale margin.
Which channels sell moissanite best
Moissanite covers several price bands, and the grade you buy should follow where the piece will be sold. Bridal and premium retail channels justify D-F colour and a well-cut centre stone, where the fire and clarity are seen up close. Marketplace, gift and fashion lines sell well at G-J colour in 925 silver settings, where price point and fast restocking drive volume. Repair and replacement buyers usually look for a matched size and shape rather than a top colour grade.
Ordering by channel keeps your stock moving: carry a narrow D-F bridal range alongside a broader G-J fashion range, and avoid buying top colour for pieces that will be priced as giftware.
Checking a moissanite shipment on arrival
- Confirm the stone is marked moissanite and not cubic zirconia, using the GRA certificate and the refractive behaviour under light.
- Measure centre stones in millimetres; moissanite density differs from diamond, so carat equivalents are not interchangeable.
- Check cut symmetry and polish under a loupe; a well-cut G-colour stone outperforms a poorly cut D-colour stone.
- Inspect rhodium plating on silver settings and confirm nickel-free metal where your market requires it.
- Separate any stones with visible inclusions or clouding, which are uncommon in moissanite but should be recorded.
Wholesale moissanite ordering questions
What is the MOQ for moissanite jewellery?
MOQ starts at 20 pcs per design for 925 silver lines, with loose stones available by the parcel. Mixed designs can be combined in one production run to reach the MOQ.
What lead time should I plan for?
Standard moissanite jewellery ships in 7-15 days after sample approval; custom settings and private label packaging add a short tooling period. Matched melee for repeat orders is held in stock where possible.
Do you supply certificates with the stones?
Volume lines carry a GRA certificate; centre stones above 0.5 ct equivalent can be supplied with explicit grading on request. The invoice states the stone type and setting metal so the goods can be disclosed accurately at retail.
Can you match a reorder colour and size?
Yes. Retain a reference piece and record the colour, cut and millimetre size on your order; we match that standard for the reorder rather than substituting a new batch.
Moissanite versus diamond for a wholesale line
Moissanite registers lower on the Mohs scale than diamond but remains hard enough for daily wear, and its higher refractive index produces the fire that customers notice first. Its price per carat is a fraction of a comparable diamond, which lets retailers offer larger centre stones at a gift or fashion price point. The trade-off is disclosure: every listing and invoice must state moissanite clearly, and the stone must not be presented as diamond. Buyers who sell into regulated markets keep the certificate and material declaration on file.
Setting options for moissanite inventory
925 sterling silver with rhodium plating is the standard for volume fashion lines; gold vermeil and gold-filled settings sit in the mid price band, and solid gold is reserved for bridal or premium orders. Prong settings suit centre stones above 6.5 mm, while pavé and channel settings hold melee and accent stones. Whichever metal you choose, confirm the plating thickness and nickel status, because thin plating and nickel content are the two most common reasons a silver line returns to the supplier.
When you quote moissanite at retail, lead with fire and larger size per budget rather than comparing the stone to diamond in a way that confuses the buyer. Colour selection should follow the setting: cooler D-F stones pair with white gold and silver, while warmer G-J stones work well in yellow gold and gift lines. Keep a reference moissanite on hand to show the refractive sparkle under store lighting, and keep the GRA certificate and invoice wording ready for any customer who asks about the stone type.
Mixed shapes can be ordered in one run to reach the MOQ, with rounds as the base shape and ovals or pears added for a broader assortment. Reorder matching is easier when the first order records colour, cut, millimetre size and setting metal, and that record travels with the purchase order for the next production run.
Building a moissanite line with our bench
Choose your shapes and sizes from round, oval, marquise, pear and cushion cuts, then send sketches, CAD files or reference photos for a 3D rendering within 48 hours. We supply loose stones and finished jewellery in 925 sterling silver and gold settings, with private label and branded packing available. Review our moissanite supplier range and round cut moissanite designs, or open a wholesale quote with your target shapes and quantities.