Carat vs. Color  Length*  Width*

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

1 Ct Emerald (Round)

versus image

2 Ct Kunzite (Round)

Light Purple
6.82×6.82 mm 8.13×8.13 mm
Actual size of 1ct Emerald
Actual size of 2ct Kunzite

x Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 1ct Emerald on a ring
64 mm
Right finger image
Ring on a right finger
Light Purple 2ct Kunzite 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 Emerald Round (6.82×6.82mm, Green) and 2ct Kunzite Round (8.13×8.13mm, Light Purple) 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.

Face-up Size

All things being equal, Kunzite will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.18 vs. 2.7 - this means it's "heavier" compared to Emerald of the same size). Face-up size also depends heavily on the 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 Emerald (Round) 2 Ct Kunzite (Round)
6.82×6.82 mm → 36.53 mm² vs. 51.91 mm² ← 8.13×8.13 mm
Face-up size outline
Face-up size outline
1ct Emerald Round (6.82×6.82mm)
2ct Kunzite Round (8.13×8.13mm)
Difference: 42% (15.38 mm²)
2ct Kunzite Round (8.13×8.13mm) has approx. 42% more face-up area than 1ct Emerald Round (6.82×6.82mm).

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