U-Prong Engagement Ring With 12.31 Carat Round Shape Lab Grown Diamond

The U-prong setting is engineered to disappear behind the diamond. Each prong is shaped into a clean U that cradles the stone at four points while leaving the pavilion almost entirely open to incoming light, allowing this 12.31 carat round brilliant to deliver scintillation from every angle. The stone is laboratory-cultivated — same hardness, same fire, same optical properties as a mined diamond — and arrives with full IGI certification.

The mounting is hand-finished in 14k gold, available in yellow, white, or rose, with 18k offered on request. The shank measures approximately 2.0mm for everyday wearability, with twin diamond rails leading cleanly into the U-prong head. Every Gallo engagement ring is delivered with its IGI certificate, an insurance-grade professional appraisal at retail replacement value, our lifetime warranty on craftsmanship, free shipping, and a 30-day return window.

For the engagement that calls for a center stone of true scale — and a setting refined enough not to compete with it.

• Center stone: 12.31ct round brilliant lab-grown
• Setting: U-prong solitaire
• Metal: 14k yellow / white / rose gold (18k available)
• Certification: IGI
• Includes: appraisal, lifetime warranty
• 30-day returns, free shipping