×
carat vs. color  length*  width*
  ×

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

2.5ct Amethyst (Emerald, 9.94×7.36mm, Violet) vs 2.5ct Diamond (Emerald, 9.07×6.72mm, White)


Quick summary: When looked from above (face-up position), 2.5ct Amethyst (9.94×7.36mm, emerald cut) appears 20% larger than 2.5ct Diamond (9.07×6.72mm, emerald cut). See below how they compare side-by-side on a ring and finger.

2.5ct Amethyst (emerald cut)
vs
 2.5ct Diamond (emerald cut)
violet
 
white
9.94×7.36 mm 9.07×6.72 mm
actual size
Actual size of 2.5ct Amethyst (emerald cut, 9.94×7.36mm, Violet color)   Actual size of 2.5ct Diamond (emerald cut, 9.07×6.72mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 2.5ct Amethyst (emerald cut, 9.94×7.36mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.5ct Diamond (emerald cut, 9.07×6.72mm) 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
 44% vs 40%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.5ct Amethyst Emerald (9.94×7.36mm, Violet) and 2.5ct Diamond Emerald (9.07×6.72mm, 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.


2.5 Ct Amethyst (Emerald) 2.5 Ct Diamond (Emerald)
9.94×7.36 mm vs 9.07×6.72 mm
68.04 mm²   56.68 mm²
Face-up size outline for 2.5ct Amethyst (9.94×7.36mm, emerald cut)
Face-up size outline for 2.5ct Diamond (9.07×6.72mm, emerald cut)
2.5ct Amethyst Emerald (9.94×7.36mm)
2.5ct Diamond Emerald (9.07×6.72mm)
Difference: 20% (11.36 mm²)
2.5ct Amethyst (Emerald, 9.94×7.36mm) has approx. 20% more face-up area than 2.5ct Diamond (Emerald, 9.07×6.72mm).


Popular comparisons: