3 Carat Old Mine Marquise D Color Lab Grown Diamonds

D is completely colorless. At 3 carats, D pairs modern colorless purity with antique cutting. The vintage faceting displays D as wide, clean white flashes across the elongated body. Premium choice for maximum brightness in this antique shape.

The vintage aesthetic embraces warmth, so G-H grades complement naturally. D provides maximum colorless assurance at this substantial size. The broader facets make color slightly more visible than in round brilliants.

Yes, Do Amore offers 3 carat D color old mine marquise lab made 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.

While lab grown diamonds cost significantly less than natural diamonds, a 3 carat D old mine marquise lab diamond still represents a meaningful investment worth protecting. Jewelry insurance typically costs 1% to 2% of the appraised value annually and covers loss, theft, and damage. Do Amore provides certification from GIA, IGI, or GCAL with every lab diamond, which simplifies the appraisal and insurance process.