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10ct Amethyst (Emerald, 15.78×11.69mm, Violet) vs 1ct Diamond (Emerald, 6.68×4.95mm, White)


Quick summary: When looked from above (face-up position), 10ct Amethyst (15.78×11.69mm, emerald cut) appears 5.6 times larger than 1ct Diamond (6.68×4.95mm, emerald cut). See below how they compare side-by-side on a ring and finger.

10ct Amethyst (emerald cut)
vs
 1ct Diamond (emerald cut)
violet
 
white
15.78×11.69 mm 6.68×4.95 mm
actual size
Actual size of 10ct Amethyst (emerald cut, 15.78×11.69mm, Violet color)   Actual size of 1ct Diamond (emerald cut, 6.68×4.95mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 10ct Amethyst (emerald cut, 15.78×11.69mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1ct Diamond (emerald cut, 6.68×4.95mm) 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
 70% vs 30%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Amethyst Emerald (15.78×11.69mm, Violet) and 1ct Diamond Emerald (6.68×4.95mm, 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.


10 Ct Amethyst (Emerald) 1 Ct Diamond (Emerald)
15.78×11.69 mm vs 6.68×4.95 mm
171.56 mm²   30.75 mm²
Face-up size outline for 10ct Amethyst (15.78×11.69mm, emerald cut)
Face-up size outline for 1ct Diamond (6.68×4.95mm, emerald cut)
10ct Amethyst Emerald (15.78×11.69mm)
1ct Diamond Emerald (6.68×4.95mm)
Difference: 458% (140.81 mm²)
10ct Amethyst (Emerald, 15.78×11.69mm) has approx. 458% more face-up area than 1ct Diamond (Emerald, 6.68×4.95mm). In other words, it's 5.58x larger.


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