carat vs. color  length*  width*

(or examine a single gem)
* size in mm (optional)

1 Ct Aquamarine (Oval)


1 Ct Emerald (Emerald)

light blue
8×6 mm 7.28×5.39 mm
actual size
Actual size of 1ct Aquamarine   Actual size of 1ct Emerald
Actual size is set for screen Change
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 1ct Aquamarine on a ring
64 mm
Right finger image
Ring on a right finger
Green 1ct Emerald on a ring
Your settings
Skin tone
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Ring diameter: 16.9 mm
Actual sizes of 1ct Aquamarine Oval (8×6mm, Light Blue) and 1ct Emerald Emerald (7.28×5.39mm, Green) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

JamesAllen → high-quality Emeralds, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.

Face-up Size

Aquamarine and Emerald have the same specific gravity so their face-up size depends on the weight, shape and proportions of the cut. Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.

1 Ct Aquamarine (Oval) 1 Ct Emerald (Emerald)
8×6 mm vs 7.28×5.39 mm
39.36 mm²   36.49 mm²
Face-up size outline
Face-up size outline
1ct Aquamarine Oval (8×6mm)
1ct Emerald Emerald (7.28×5.39mm)
Difference: 8% (2.87 mm²)
1ct Aquamarine Oval (8×6mm) has approx. 8% more face-up area than 1ct Emerald Emerald (7.28×5.39mm).

Popular comparisons:

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Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.