1.0 Carat Marquisevs1.25 Carat Heart

When comparing a 1 carat Marquise to a 1.25 carat Heart, the visual size difference is minimal. Both diamonds occupy nearly the same surface area (within 0%), making them appear almost identical when viewed face-up.

Detailed Measurements:

The 1 carat marquise diamond measures 10mm × 5mm, while the 1.25 carat heart measures 6.8mm × 6.8mm. The 1 carat marquise covers approximately 59% of the width of an average finger (size 6.5), creating a substantial, eye-catching presence.

Shopping Considerations:

Beyond size, consider that marquise diamonds tend to have different brilliance patterns compared to heart cuts. Use the interactive visual tool above to see these diamonds side-by-side with a US dime for real-world scale reference. The measurements shown are based on well-cut diamonds with standard proportions.

Ready to shop? Browse certified diamonds to compare prices and find your perfect diamond.