Pear vs Marquise diamond size

By HeyGema™ · Updated November 5, 2026

In short

A 1 carat pear measures 8.5 x 5.5 mm and a 1 carat marquise 10.4 x 5.2 mm. At the same weight a marquise faces up about 19% larger than a pear. In face-up terms, 1 carat of pear looks like a 0.96 carat round and 1 carat of marquise like a 1.25 carat round.

8.5 x 5.5 mm1 ct pear
10.4 x 5.2 mm1 ct marquise
+19%marquise face-up vs pear

Carat to mm calculator

ShapeGemCaratLength to width

About 10.4 x 5.2 mm

An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.

1 ct pear

8.5 x 5.5 mm

1 ct marquise

10.4 x 5.2 mm

Side by side

1 ct pear inside 1 ct marquise

A 1 carat pear and a 1 carat marquise diamond, to the same scale.

Pear vs Marquise diamond size at the same weight

At the same weight a marquise faces up about 19% larger than a pear. A 1 carat pear measures 8.5 x 5.5 mm and a 1 carat marquise 10.4 x 5.2 mm. A 1 carat pear faces up like a 0.96 carat round, and a 1 carat marquise like a 1.25 carat round.

0.5 carat: Pear length x width: 6.7 x 4.4 mm; Marquise length x width: 8.3 x 4.1 mm; Marquise face-up vs pear: +19%

0.75 carat: Pear length x width: 7.7 x 5.0 mm; Marquise length x width: 9.4 x 4.7 mm; Marquise face-up vs pear: +19%

1 carat: Pear length x width: 8.5 x 5.5 mm; Marquise length x width: 10.4 x 5.2 mm; Marquise face-up vs pear: +19%

1.5 carat: Pear length x width: 9.7 x 6.3 mm; Marquise length x width: 11.9 x 6.0 mm; Marquise face-up vs pear: +19%

2 carat: Pear length x width: 10.7 x 6.9 mm; Marquise length x width: 13.1 x 6.6 mm; Marquise face-up vs pear: +19%

3 carat: Pear length x width: 12.3 x 7.9 mm; Marquise length x width: 15.0 x 7.5 mm; Marquise face-up vs pear: +19%

Carat	Pear length x width	Marquise length x width	Marquise face-up vs pear
0.5 carat	6.7 x 4.4 mm	8.3 x 4.1 mm	+19%
0.75 carat	7.7 x 5.0 mm	9.4 x 4.7 mm	+19%
1 carat	8.5 x 5.5 mm	10.4 x 5.2 mm	+19%
1.5 carat	9.7 x 6.3 mm	11.9 x 6.0 mm	+19%
2 carat	10.7 x 6.9 mm	13.1 x 6.6 mm	+19%
3 carat	12.3 x 7.9 mm	15.0 x 7.5 mm	+19%

Pear vs Marquise on a finger

A 1 carat pear covers 33% of the width of a size 6 finger and a 1 carat marquise covers 32%. Long cuts sit along the finger, so their width is what shows across it.

6.0 mm stone on a 16.5 mm finger: it covers 36% of the widthA 1.5 carat marquise on a size 6 finger.

4: Finger width: 14.9 mm; 1.5 ct pear covers: 42%; 1.5 ct marquise covers: 40%

5: Finger width: 15.7 mm; 1.5 ct pear covers: 40%; 1.5 ct marquise covers: 38%

6: Finger width: 16.5 mm; 1.5 ct pear covers: 38%; 1.5 ct marquise covers: 36%

7: Finger width: 17.3 mm; 1.5 ct pear covers: 36%; 1.5 ct marquise covers: 34%

8: Finger width: 18.1 mm; 1.5 ct pear covers: 35%; 1.5 ct marquise covers: 33%

US ring size	Finger width	1.5 ct pear covers	1.5 ct marquise covers
4	14.9 mm	42%	40%
5	15.7 mm	40%	38%
6	16.5 mm	38%	36%
7	17.3 mm	36%	34%
8	18.1 mm	35%	33%

Match the look, not only the carat

Because a marquise of about 0.77 carat faces up like 1 carat of pear, comparing by weight alone hides the difference. Compare millimeters, or put both stones side by side in the size comparison tool.

Pear and Marquise size charts

Full charts from 0.25 to 5 carat: Pear diamond size chart and Marquise diamond size chart.

Questions

At the same weight a marquise faces up about 19% larger than a pear. Face-up area is what you see from above; the marquise has more of it at equal weight.

A 1 carat pear is about 8.5 x 5.5 mm and a 1 carat marquise about 10.4 x 5.2 mm, for a well-cut stone at the usual ratio.

A 2 carat pear is 10.7 x 6.9 mm and a 2 carat marquise is 13.1 x 6.6 mm. Face-up, the marquise is +19% against the pear.

A 1 carat pear covers 33% of the width of a size 6 finger and a 1 carat marquise 32%. The numbers change with ring size and with the stone's length-to-width ratio.