13.06 Carat Cushion Shape Lab Grown Diamond

This 13.06 carat cushion-cut diamond is laboratory-cultivated, with the same crystal structure, optical properties, and Mohs-10 hardness as a mined stone. The cushion shape — a square silhouette with softened corners — is the classic heirloom cut, prized for the way it gathers light into a pillowed glow rather than a sharp flash.

The stone arrives with full IGI certification documenting carat, measurements, depth and table percentages, polish, and symmetry. Lab-grown diamonds offer measurably more size for the same investment, are conflict-free by origin, and are physically and chemically indistinguishable from natural diamonds — a refined choice for a center stone of this scale. Every Gallo loose diamond is accompanied by a professional written appraisal at retail replacement value and is eligible for our lifetime warranty when set into a Gallo mounting.

Designed for the client building a once-in-a-lifetime piece — a milestone engagement ring, an anniversary upgrade, an heirloom pendant — this stone can be set into a custom mounting hand-finished in the New York diamond district within three weeks of design approval.

• Carat: 13.06ct
• Shape: Cushion
• Origin: Lab-grown / cultivated
• Certification: IGI
• Custom mounting turnaround: ~3 weeks
• Includes: appraisal, lifetime warranty on Gallo mountings