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6ct Amethyst (Emerald, 13.31×9.86mm, Violet) vs 2.7ct Diamond (Round, 9.05×9.05mm, White)


Quick summary: When looked from above (face-up position), 6ct Amethyst (13.31×9.86mm, emerald cut) appears 90% larger than 2.7ct Diamond (9.05×9.05mm, round cut). See below how they compare side-by-side on a ring and finger.

6ct Amethyst (emerald cut)
vs
 2.7ct Diamond (round cut)
violet
 
white
13.31×9.86 mm 9.05×9.05 mm
actual size
Actual size of 6ct Amethyst (emerald cut, 13.31×9.86mm, Violet color)   Actual size of 2.7ct Diamond (round cut, 9.05×9.05mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 6ct Amethyst (emerald cut, 13.31×9.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.7ct Diamond (round cut, 9.05×9.05mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 59% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Amethyst Emerald (13.31×9.86mm, Violet) and 2.7ct Diamond Round (9.05×9.05mm, White) 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?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Diamond will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.52 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.


6 Ct Amethyst (Emerald) 2.7 Ct Diamond (Round)
13.31×9.86 mm vs 9.05×9.05 mm
122.05 mm²   64.33 mm²
Face-up size outline for 6ct Amethyst (13.31×9.86mm, emerald cut)
Face-up size outline for 2.7ct Diamond (9.05×9.05mm, round cut)
6ct Amethyst Emerald (13.31×9.86mm)
2.7ct Diamond Round (9.05×9.05mm)
Difference: 90% (57.72 mm²)
6ct Amethyst (Emerald, 13.31×9.86mm) has approx. 90% more face-up area than 2.7ct Diamond (Round, 9.05×9.05mm).


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