3 Carat Old Mine Marquise Blue Color Lab Grown Diamonds

A 3 carat blue old mine marquise has deep blue across a vintage elongated shape. Broader facets create rich, saturated blue flashes. At 3 carats, the blue sweeps dramatically with antique character.

Broader vintage facets create deep blue flashes across the blunted-tip body. At 3 carats, the blue appears with contemplative depth unique to vintage cuts.

Yes, Do Amore offers 3 carat blue old mine marquise lab grown diamonds, all grown, cut, and polished using renewable energy (solar and hydro power). Every lab diamond comes with certification from the GIA, IGI, or GCAL. Every purchase funds clean water access for one person in need. All rings include free lifetime maintenance covering inspections, polishing, cleaning, stone tightening, rhodium plating, and resizing.

A 3 carat blue old mine marquise lab diamond looks best in vintage-inspired east-west settings, ornate prong designs, and antique halo settings. At 3 carats, the stone has significant presence, so a simpler setting lets the diamond take center stage. The blue hue is extremely rare and highly prized, adding collectible appeal. Requires v-prongs to protect the pointed ends while preserving the antique aesthetic. All Do Amore rings include free lifetime maintenance covering inspections, polishing, cleaning, stone tightening, rhodium plating, and resizing.