Wholesale Marquise Lab-Grown Diamonds
Frequently Asked Questions (FAQs)
The two most consequential marquise selection criteria, symmetry across both axes and bow-tie severity, are not captured by IGI grading. Trade buyers perform face-up visual evaluation on certified marquise anyway. Non-certified marquise lab-grown diamonds from LabGems remove the IGI cost without removing any needed evaluation step, delivering approximately 20% savings from the same Antwerp supply chain.
The evaluation method is identical for non-certified and certified marquise inventory. Request face-up imagery under diffuse lighting from LabGems and check for a dark central band across the stone. Severely visible bow-tie should be rejected; subtle bow-tie is commercially acceptable. Bow-tie does not appear on IGI certificates, so visual checking is unavoidable either way.
Non-certified marquise lab-grown diamonds at LabGems run approximately 20% lower per stone than certified equivalents at equal specifications. Cuts come from the same Antwerp partners as the certified marquise inventory and are graded in-house against the same 4Cs framework. The differential reflects removed IGI documentation cost rather than any compromise in stone quality.
LabGems holds non-certified marquise lab-grown diamonds in active Antwerp inventory from approximately 0.30ct through 3.00ct, with larger statement sizes on request. A €500 minimum applies across all purchases. Standard sizes ship within 1 business day; custom specifications ship within 7-10 business days. Full timelines are covered on the Shipping & Delivery page.
Yes. LabGems coordinates matched marquise lab-grown diamonds across length-to-width ratio, dual-axis symmetry, bow-tie character, colour, and clarity for earrings and multi-stone designs. Matching is handled from active Antwerp inventory. Contact LabGems with your pair or set specifications to confirm current availability and wholesale pricing.
Non-certified marquise cut lab-grown diamonds offer a cost-effective choice for high-volume manufacturing, vintage-inspired settings, and multi-stone design applications where individual lab grading reports are not required. Characterised by an elongated boat-shaped silhouette and brilliant-style faceting, these marquise cuts deliver substantial finger coverage and high-intensity sparkle at wholesale pricing. LabGems stocks these non-certified assortments in active Antwerp inventory for immediate trade allocation.
Sourcing and Specifications
Active Antwerp inventory spans non-certified marquise cuts from 0.30ct to 3.00ct, with larger statement sizes available on request. These stones are screened for structural integrity and visual consistency to ensure high manufacturing reliability. Standard in-stock orders dispatch within 1 business day following payment verification; logistics for custom requirements are managed by our trade team. A €500 minimum applies across all purchases. Browse available non-certified assortments through our wholesale supply channels.
Manufacturing Considerations for Non-Certified Stones
Non-certified marquise cuts are optimized for production efficiency. Because these stones are supplied without individual IGI reports, they provide significant capital savings for manufacturers creating vintage jewelry, statement pieces, or multi-stone layouts where the cost-to-visual-impact ratio is paramount. For high-end bridal pieces requiring provenance documentation, please review our certified marquise shape collection.
Wholesale Economics and Margin Opportunities
Procuring non-certified marquise cuts allows trade partners to maximize gross retail margins on vintage-inspired jewelry lines. Their unique silhouette integrates seamlessly into heritage-style settings and statement designs. Explore our full non-certified fancy shapes collection for additional volume-production options.
Selection Notes for Non-Certified Marquise Cuts
- Target high-volume manufacturing needs where individual certification is not required
- Prioritise non-certified options for vintage-inspired and fashion-forward jewelry lines
- Incorporate into heritage-style mountings and statement necklace designs
- Combine with other shapes to satisfy the €500 minimum purchase requirement
- Leverage volume pricing to maximize margins on fashion-forward assortments