A bridal buyer in Sydney split a test PO in 2024: half lab-grown diamonds at 1.2 ct D-VVS, half moissanite at the same face-up size. The lab-grown diamonds sold to the top 20% of shoppers; the moissanite sold to the middle 60%; the bottom 20% bought neither and walked. That split has held across three repeat orders. Moissanite and lab-grown diamond are not substitutes in the same price bracket—they occupy different tiers of the bridal market, and stocking the wrong one for your store costs you margin. This article lays out the tier comparison.
The price-per-carat gap that defines the tiers
In 2026 wholesale supply, a 1.2 ct D-VVS round lab-grown diamond typically trades at a multiple of what a 1.2 ct equivalent D-VVS moissanite round costs. The exact gap moves weekly with rough supply and CVD/HPHT capacity, but structurally moissanite sits in the low triple-digits per carat at retail-equivalent size, while lab-grown diamonds sit in the low-to-mid four figures. That gap is the whole reason both categories exist: moissanite serves the customer who wants a white, brilliant, conflict-free stone at a mass-market price; lab-grown diamond serves the customer who wants the diamond name and the diamond accreditation.
The material facts are on Wikipedia's moissanite entry and the lab-grown diamond entry. GIA's 4Cs framework applies to both, but moissanite is typically graded by GRA rather than GIA; see GRA verification.
Which color and clarity bands to stock in each
For moissanite, D-F VVS is the volume tier. G-H VVS works in yellow-gold settings. Because moissanite has higher fire than diamond, customers do not usually ask for higher clarity than VVS—SI stones look just as brilliant face-up, but the certificate matters at resale-adjacent price points. For lab-grown diamond, the volume tier is D-E VS1-VS2 in 1.0–2.0 ct; the I-J and SI brackets sell but require more explanation. We cover color choice in D-F vs G-H bulk stock.
Certification and disclosure
Lab-grown diamonds sold above 1 ct usually carry an IGI or GIA report with a laser inscription. Moissanite sold above 0.5 ct usually carries a GRA report. The FTC Jewelry Guides require that you not market either as a natural diamond. Use the word moissanite for moissanite, and the phrase lab-grown diamond (or lab-created) for lab diamond. Do not use the word diamond alone for moissanite. Read the wording in simulant positioning.
Which tier to stock for your store
If your average ticket is under $1,000, lean moissanite. If it is $1,500–$4,000, split the order 60/40 moissanite to lab-grown. If it is above $4,000, lean lab-grown. Mixing the two in the same case is fine, but keep them visually separated: customers comparing a $400 moissanite with a $2,500 lab diamond in the same tray will question the moissanite. For the size brackets that move, see 1ct to 5ct stocking and carat pricing tiers.
Can I market moissanite as lab diamond?
No. The FTC requires clear disclosure. See Jewelry Guides and our positioning piece.
Which has better fire?
Moissanite. Its refractive index is higher, so spectral flashes are more visible. See fire vs diamond.
Do lab-grown diamonds hold value better?
Lab-grown prices have fallen roughly 50–70% since 2020 and continue to fall. Neither category is a resale asset; both are consumption purchases.
Can a jeweler tell moissanite from diamond?
Yes, with a standard thermal tester in seconds. Do not try to pass one as the other.
Where the two categories actually overlap
The overlap zone is the 0.7 to 1.0 ct bracket. Below 0.7 ct, lab-grown diamonds are too expensive for the market that buys small moissanite studs; above 1.5 ct, the lab-grown price climbs out of reach for most moissanite buyers. In the 0.7 to 1.0 ct bracket, both stones are priced close enough that customers compare them directly. This is where your in-store education matters most: customers who understand the fire difference will choose moissanite; customers who need the diamond certificate will choose lab-grown. See our comparison language in moissanite fire vs diamond.
Certification trade-offs
A GRA report on moissanite costs less than an IGI or GIA report on lab-grown diamond, and turnaround is shorter. But GRA is not recognized by every appraisal house, and some insurance companies will not write a moissanite rider above a certain value without an independent appraisal. Plan for that: keep a local appraiser on call for moissanite jewelry sold over $1,000. The FTC Jewelry Guides govern disclosure, and the GIA 4Cs remain the reference language customers already understand. For certificate handling, see GRA verification.
For most independent retailers, a starting mix of 70% moissanite and 30% lab-grown diamond, adjusted by region, outperforms either category alone.
Wholesale supply. HOLYCOME supplies moissanite across every cut and size, D-F VVS, GRA certified. We do not supply lab-grown diamond, so our pricing on moissanite is unconflicted. Apply for a wholesale account and request the current stock list.
