3 Carat Old Mine Marquise Lab Grown Diamonds

The old mine marquise is a vintage elongated cut with soft faceting and rounded proportions characteristic of antique diamonds. At 3 carats, the old mine marquise creates a substantial, historically rich statement with broader, warmer flashes than a modern marquise. The slightly blunted tips add durability. Look between 2.9 to 3.3 carats.

Both are vintage marquise variations, but the old mine marquise has a slightly narrower body with the characteristic old mine deep pavilion and small table. The Dutch marquise is wider with softer contours. At 3 carats, the old mine marquise reads as slightly more antique and traditional.

Yes, Do Amore offers 3 carat 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 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. 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.