mm to Carat Stone Size Chart
Heart-cut

A heart-shaped diamond is unique and produces a lot of sparkle like a round-cut diamond. It can be difficult to cut, but when done well, its french-tip pointed end augments the brilliance and shine created by its 58 facets. It is a popular cut for engagement rings and even pendants. Our stone sizing chart below shows the standard sizes and matching carat weights for heart-cut diamonds to help you find your perfect fit.

Shop Kobelli Hearts

Printable Size Chart



Heart Diamond Average Carat by Millimeter Conversions

The perfect piece for your sweetheart. Show your love with a classic heart shape. | Shop Kobelli's Heart Shaped Diamonds.


Approx. Millimeter
Approx. Carat Weight
5.5 x 5
0.5
7 x 6
1
7.6 x 6.5
1.25
8 x 7
1.5
9 x 8
2
9.5 x 8.5
2.5
10 x 9
3
10.5 x 9.5
3.5
11 x 10
4
11.5 x 7.5
4.5
12 x 10.5
5

Round

Cushion

Oval

Marquise

Pear

Emerald

Radiant

Asscher

FAQ

How much does a listed carat weight vary by?

All diamond weights may vary by 5% unless stated otherwise. One-of-a-kind products will showcase the exact weight of all stones.

Do moissanites weigh the same as diamonds?

Not quite - while the moissanite gemstone is technically slightly lighter in weight due to a lower density, the stones are most commonly marketed by their Diamond Equivalent Weight (DEW) in accordance to the millimeter size of the stone rather than the weight of the stone itself.

All of Kobelli's moissanite products will be listed with the Diamond Equivalent Weights (DEW). This allows for an identical dimensional look if you are to upgrade your existing moissanite center stone for a diamond.

What about other gemstones?

Gemstones, aside from moissanites, will be listed in accordance to either their millimeter size or their carat weight. Every stone type carries its own unique traits for density and depth.