A menswear-influenced jewelry brand in Melbourne stocked princess-cut moissanite for its low-set band collection. Six months in, the returns began: chips at the corners, visible as white nicks where the stone had been knocked against a desk or a steering wheel. Princess is the sharpest-cornered cut in the box, and bulk stock that was not inspected for corner integrity became a warranty problem.
Princess is a high-volume bridal shape and a strong seller in men's signet settings, but the four sharp corners are its weak point. Here is the spec that keeps your bulk princess stock out of the return pile.
Where princess stock breaks
A princess cut is a square or rectangular stone with pointed corners — no cropping, no bevel. Those corners are the thinnest part of the pavilion, and they point outward toward the metal of the setting. Two failure modes are common:
- Setting chips: if the setter bends a prong too hard over a sharp corner, the corner can nick. Once nicked, the chip grows under daily wear.
- Wear chips: on a low-set band or a signet ring, the corner sits near the surface and takes knocks. Moissanite is Mohs 9.25, very hard, but a hard sharp edge also has no give.
Industry norm is to ship princess stones and let the setter deal with corners. Our QC inspects every princess stone for pre-existing corner nicks before packing, and we recommend the setting style that protects the corners long-term.
| Failure point | Commodity stock | Our bulk princess spec |
|---|---|---|
| Corner nick on arrival | Occasional, accepted | Rejected under 10x |
| Girdle at corner | Thin, sharp | Slightly thicker at corners |
| Square vs rectangle | Mixed in parcel | Locked to one ratio per order |
| Setting recommendation | Not specified | V-prong or bezel noted on PO |
What we check on every princess parcel
Princess is a high-yield cut, which means it is easy to over-order and under-inspect. We do not:
- Corner inspection: every princess stone is turned under a 10x loupe and examined at all four corners. Any pre-existing nick reaches the reject pile before packing. This is the single most common reason a princess stone comes back from a setter chipped — a tiny incoming nick that the prong closing turns into a visible chip.
- Girdle at corners: we prefer a slightly thicker girdle at the four corners, even if it adds a fraction of depth. That extra girdle thickness is the difference between a corner that chips and one that deflects a knock.
- Square vs rectangle lock: princess stones ship as either true square (1.0:1) or rectangular (1.1:1 to 1.2:1). Do not mix them in one tray — a square and a 1.2 rectangle read as different stones. We lock the ratio per order.
- Setting note: on the packing list we recommend V-prong or bezel protection for the corners. A plain four-prong setting on a sharp-cornered princess is a warranty claim waiting to happen.
Which princess stock to carry
Bridal boutiques — square princess (1.0:1) in 5 mm and 5.5 mm is the volume size. It fits standard solitaire heads and reads as a classic engagement stone. Pair with V-prongs.
Men's and signet lines — rectangular princess (1.15:1) in 6x5 mm or 7x5 mm sits well on a low-set band. Recommend bezel protection; it is the setting style that protects corners best in daily wear.
Private-label programs — lock your corner girdle spec and ratio once. Your CAD model expects a specific stone outline, and we hold that template across reorders so your setting yield stays consistent.
Stock princess cut moissanite, compare with radiant cuts (which have cropped corners), or read setting guides in our blog.
Frequently Asked Questions
Do princess cut moissanite chips easily?
The four sharp corners are the weak point. Moissanite itself is Mohs 9.25 and very hard, but a sharp corner has no bevel to deflect a knock. We ship only stones that pass a corner inspection, and we recommend V-prong or bezel protection on the setting.
Square or rectangular princess — which sells better?
True square (1.0:1) is the bridal volume seller. Rectangular princess (1.1:1 to 1.2:1) reads longer on the finger and suits low-set bands and men's signet designs. Choose one ratio per product line.
What setting protects princess corners best?
A bezel setting fully encloses the corner and is the safest option for daily wear. V-prongs cup each corner without covering it. A plain four-prong setting leaves corners exposed and is not recommended for princess stones.
What size princess moissanite is most popular?
The 5 mm and 5.5 mm square stones are the bridal volume sizes. They fit standard solitaire heads and read as a 1-carat-equivalent center stone.
What is the MOQ for princess moissanite?
Our wholesale MOQ is 20 pieces per size and ratio. Sample parcels ship within 5 business days after corner inspection.
Key takeaways
- Inspect every corner before accepting a princess parcel.
- Specify a slightly thicker corner girdle to cut wear chips.
- Use V-prong or bezel settings — not plain prongs.
- Request a corner-checked sample: MOQ 20 pcs per size, shipped in 5 business days. Open an account.