3 Carat Engagement Rings

A round 3 carat diamond typically measures around 9.1mm across. Antique cuts like old mine or old European may appear slightly different due to their proportions. Elongated shapes such as marquise or emerald cuts often look larger on the hand, while square cuts like Asscher may appear more compact.

Yes. Antique 3 carat diamonds, such as old mine or old European cuts, were hand-cut and often have warmer tones and unique faceting that give them a softer brilliance compared to modern precision cuts. Their rarity and character make them highly desirable for those seeking a distinctive engagement ring.

Prices for 3 carat engagement rings usually begin around $40,000 and can exceed $100,000 depending on cut, clarity, and overall quality. Because diamonds increase in rarity as they grow larger, prices do not rise in a straight line but rather exponentially with each carat. For example, a 3 carat diamond of fine quality can cost several times more than a comparable 1 or 2 carat diamond. Antique 3 carat diamonds are especially scarce, which often places them in the higher range.

Yes. We create custom 3 carat engagement rings through a three-step process. First, share your ideas, budget, and preferred setting — either a modified Erstwhile style or inspired by our vintage archive. Next, we source antique diamonds that match your criteria, sharing curated options virtually or in our NYC showroom. Finally, our master jewelers handcraft your ring, a process that typically takes 4–6 weeks once the stone and design are finalized.

Yes. We offer private appointments at our New York City showroom and virtual consultations worldwide. This allows you to view our 3 carat engagement rings in person or online and receive personalized guidance during your selection. Book an appointment today.