What to Know

At 1.5 carats, the stone is impossible to miss. A round brilliant at this weight measures about 7.3 to 7.4mm face-up. That's a meaningful step up from 1 carat that most people notice immediately when they see both side by side.

No matter the size of the diamond, quality can vary a great deal between two diamonds with similar specs. While any diamond can appear beautiful on a grading report or HD video qualities issues such as bow ties, light leakage, or poor make are often only obvious in person.

This is why every diamond in Ada's inventory is inspected in person, not just evaluated by a grading report. Two 1.5 carat diamonds with identical specs can look entirely different in real life.

Why Ada Diamonds

Ada hand-selects every diamond in person, which matters more at 1.5 carats than many buyers expect. At this size, small differences in cut quality, light performance, and color consistency show up clearly in real life. Our team reviews each stone up close, in multiple light environments, before it ever becomes part of our inventory. A grading report is a starting point, not the whole story.

From your first conversation to the moment your ring arrives, you'll work directly with a Diamond Concierge who knows your preferences and stays with you through every decision. Every ring is made to order in our NYC flagship, built around the exact stone you choose.