Buying moissanite at wholesale is not the same as buying diamond wholesale. GIA does not grade moissanite, price grids move weekly, and MOQ terms differ by factory. Buyers who show up with a clear paperwork and audit checklist avoid the two most common problems: receiving cloudy "D color" stock, and receiving unpapered stones that cannot be sold into regulated markets. Here is the checklist B2B buyers use.
MOQ and lot structure
Typical factory terms: MOQ 10-50 pieces per size/grade for calibrated round brilliant, or 50-100 carats mixed fancy shapes. Sample orders run 1-3 pieces at retail-ish price to confirm color and fire before committing. Lead time is usually 7-21 days for stocked sizes and 30-45 days for custom cuts. Payment terms are commonly 30% deposit, 70% before shipment by T/T, with PayPal or trade-assurance available for first orders.
GRA papers and inscriptions
Because GIA declines to grade moissanite, the trade relies on GRA (Gemological Research Association) reports, plus in-house lab sheets. A legitimate GRA report lists carat, color (DEF / GHI / JKL), clarity (VVS / VS / SI), cut grade, and measurements, with a matching laser inscription on the girdle. Verify the report number in the GRA online checker before accepting. Ask for Charles & Colvard origin documentation if marketing the original branded material; unbranded Chinese-grown moissanite is fine for value lines but must not be sold under a legacy brand name.
Factory audit checklist
Before committing over $10k, request: ISO 9001 certificate, BSCI or Sedex social-audit report, REACH nickel-release test for plated settings, and an in-house lab certification sample. Walk the floor (or receive video walkthrough) of the cutting room, the laser-inscription station, and the packing area. Sample 5% of the lot under 10x loupe for doubling, girdle etching matching report, and edge chips. Reject any parcel where more than 1 of 20 sampled stones mismatches the paper.
Pricing and margin floors
2026 reference: DE VVS round moissanite loose runs $25-$80 per carat factory depending on size (1 ct vs 3 ct), with DEF VS at the lower end. Retail markup for solitaire-set moissanite is typically 3-5x loose price. Build your pricing sheet around loose cost plus setting, then add the margin. Sourcing context is in our moissanite guide, paperwork rules in certification overview, and market context in lab-grown versus natural. Regulatory reference: EU REACH annex and ECHA compliance database.
Sample inspection protocol
Before placing a repeat order, inspect the sample lot against four benchmarks. First, color: compare the sample side-by-side with a known DEF diamond or moissanite master stone under daylight; any visible yellow tint outside the declared grade is a reject. Second, fire: tilt the stone under a 6,500K ring light and confirm rainbow flashes appear evenly, not concentrated under the table. Third, edge chips: scan every facet edge under 10x; chips on the pavilion girdle indicate rough handling in transport. Fourth, girdle inscription: confirm the GRA number is legible, not half-erased. Document each sample with three photos and keep the file against future shipments.
FAQ
Does GIA grade moissanite?
No. GIA grades natural and lab-grown diamond. Moissanite is papered by GRA and other independent labs.
What MOQ should a new buyer start with?
Start with a 10-piece sample lot in 1 ct DEF VVS round. Once color and fire match expectations, scale to 50-100 piece lots per size.
How do I know a GRA report is real?
Enter the report number in GRA's online checker and verify the girdle inscription under 10x matches the number on the paper.
Is Chinese-grown moissanite lower quality?
No. Most 2026 moissanite is grown in China to consistent DEF VVS standard. Branded origin matters only if you market the legacy name.
Start with a sample lot, scale with data
Order a 10-piece sample, photograph it under your store lighting, compare to the GRA sheet, and only then commit. The factories that pass the 5% loupe check consistently are the ones worth recurring. This same diligence applies to our broader sourcing playbook.
Wholesale note: gemmanufacturer.com ships GRA-papered moissanite from 10-piece sample lots, with factory audit documents, REACH test reports, and report-number verification provided on request for retail private-label programs.
Final reminder: price grids on moissanite move monthly. Lock the quote for seven days in writing, confirm grade and size before the deposit leaves, and never pay 100% upfront to a new factory. Those three rules eliminate the majority of B2B disputes in this category.
One last paperwork point: many retail jurisdictions require lab-grown and simulated stones to be disclosed at point of sale. GRA papers on every shipped stone make that disclosure trivial; unpapered lots invite complaints from downstream retailers who cannot prove what they sold.
Start with one shape and one grade (1 ct round DEF VVS) before branching into ovals, pears, or color tiers. Fancy shapes and lower clarity tiers move half as fast and tie up cash.
