What to Know

A 5 carat lab grown diamond that looks genuinely beautiful is rare by any standard. At this weight, the gap between a great stone and a mediocre one is wider than at any other size. A round brilliant at this weight measures about 11 to 11.2mm face-up.

No matter what size diamond you're considering, curation matters. You should never choose a diamond based on a grading report alone. While two diamonds may share identical 4Cs, they can look very different in person. Every diamond at Ada is hand-selected in person by our expert team. We curate only the rare few lab grown diamonds that meet our standards for cut precision, light performance, and beauty in real life.

Why Ada Diamonds

At larger sizes, exceptionally beautiful diamonds are harder to come by, and the curated nature of our inventory reflects this. No matter the size, diamond quality varies greatly even across those diamonds with similar grades, which is why we always examine each diamond in person, in multiple light environments, before it ever becomes part of our inventory. A grading report is a starting point, not the whole story.

We know that a purchase this important deserves an exceptional experience. Whether you purchase online or enjoy complimentary design support with a Diamond Concierge, each piece is made to order and crafted in-house from start to finish. Our master jewelers create each setting one at a time, built specifically for its stone. Nothing is mass-produced. Every detail is considered, refined, and made to last for a lifetime.