How big is a 2 carat emerald?

By HeyGema™ · Updated

In short

A 2 carat round emerald measures about 8.9 mm across (0.35 inches), 9% wider than a 2 carat diamond (8.1 mm). An oval of the same weight is 11.0 x 7.6 mm and an emerald cut 9.6 x 6.9 mm.

Carat to mm calculator

About 8.9 x 8.9 mm

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

Round
8.9 mm
Oval
11.0 x 7.6 mm
Cushion
7.7 x 7.7 mm
Princess
7.6 x 7.6 mm
Emerald cut
9.6 x 6.9 mm
Asscher
7.6 x 7.6 mm
Radiant
8.9 x 6.9 mm
Pear
11.7 x 7.6 mm
Marquise
14.3 x 7.1 mm
Heart
8.9 x 8.9 mm
Trillion
9.6 x 9.6 mm
Baguette
11.0 x 5.5 mm
= 5 mm in every picture above
A 2 carat emerald in 12 shapes, drawn to one scale.

2 carat emerald size by shape

Face-up measurements of a well-cut 2 carat emerald. Emerald is lighter than diamond (2.72 against 3.52), so the same weight gives a bigger stone, 9% wider across.

Round
Length x width: 8.9 mm
In inches: 0.35 in
Oval
Length x width: 11.0 x 7.6 mm
In inches: 0.43 x 0.30 in
Cushion
Length x width: 7.7 x 7.7 mm
In inches: 0.30 x 0.30 in
Princess
Length x width: 7.6 x 7.6 mm
In inches: 0.30 x 0.30 in
Emerald cut
Length x width: 9.6 x 6.9 mm
In inches: 0.38 x 0.27 in
Asscher
Length x width: 7.6 x 7.6 mm
In inches: 0.30 x 0.30 in
Radiant
Length x width: 8.9 x 6.9 mm
In inches: 0.35 x 0.27 in
Pear
Length x width: 11.7 x 7.6 mm
In inches: 0.46 x 0.30 in
Marquise
Length x width: 14.3 x 7.1 mm
In inches: 0.56 x 0.28 in
Heart
Length x width: 8.9 x 8.9 mm
In inches: 0.35 x 0.35 in
Trillion
Length x width: 9.6 x 9.6 mm
In inches: 0.38 x 0.38 in
Baguette
Length x width: 11.0 x 5.5 mm
In inches: 0.43 x 0.22 in

2 carat emerald against other gems

Diamond
Round, 2 carat: 8.1 mm
Moissanite
Round, 2 carat: 8.4 mm
Sapphire
Round, 2 carat: 7.8 mm
Ruby
Round, 2 carat: 7.8 mm
Aquamarine
Round, 2 carat: 8.9 mm
Morganite
Round, 2 carat: 8.8 mm
Tanzanite
Round, 2 carat: 8.3 mm
Topaz
Round, 2 carat: 8.1 mm
Emerald (this page)
Round, 2 carat: 8.9 mm

2 carat emerald on a finger

8.9 mm
8.9 mm stone on a 16.5 mm finger: it covers 54% of the widthA round 2 carat emerald on a size 6 finger.
4
Finger width: 14.9 mm
Round covers: 60%
Oval covers: 51%
5
Finger width: 15.7 mm
Round covers: 56%
Oval covers: 48%
6
Finger width: 16.5 mm
Round covers: 54%
Oval covers: 46%
7
Finger width: 17.3 mm
Round covers: 51%
Oval covers: 44%
8
Finger width: 18.1 mm
Round covers: 49%
Oval covers: 42%
9
Finger width: 18.9 mm
Round covers: 47%
Oval covers: 40%

Emerald at nearby weights

1.5 carat emerald
Round diameter: 8.0 mm
2 ct (this page)
Round diameter: 8.9 mm
3 carat emerald
Round diameter: 10.1 mm

Questions

A round 2 carat emerald is about 8.9 mm across. Other shapes are longer than they are wide: an oval is 11.0 x 7.6 mm.
Yes. A round 2 carat emerald is 9% wider than a 2 carat diamond (8.1 mm).
0.40 grams. A carat is 200 milligrams for every gem.
A round 2 carat emerald covers 54% of the width of a size 6 finger. Compare it with a ring you have tried on in the finger chart above.

More size charts