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2ct Amethyst (Emerald, 9.23×6.84mm, Violet) vs 0.25ct Diamond (Marquise, 6.54×3.27mm, White)


Quick summary: When looked from above (face-up position), 2ct Amethyst (9.23×6.84mm, emerald cut) appears 3.9 times larger than 0.25ct Diamond (6.54×3.27mm, marquise cut). See below how they compare side-by-side on a ring and finger.

2ct Amethyst (emerald cut)
vs
 0.25ct Diamond (marquise cut)
violet
 
white
9.23×6.84 mm 6.54×3.27 mm
actual size
Actual size of 2ct Amethyst (emerald cut, 9.23×6.84mm, Violet color)   Actual size of 0.25ct Diamond (marquise cut, 6.54×3.27mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 2ct Amethyst (emerald cut, 9.23×6.84mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.25ct Diamond (marquise cut, 6.54×3.27mm) 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
 41% vs 20%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2ct Amethyst Emerald (9.23×6.84mm, Violet) and 0.25ct Diamond Marquise (6.54×3.27mm, 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 Ct Amethyst (Emerald) 0.25 Ct Diamond (Marquise)
9.23×6.84 mm vs 6.54×3.27 mm
58.71 mm²   15.18 mm²
Face-up size outline for 2ct Amethyst (9.23×6.84mm, emerald cut)
Face-up size outline for 0.25ct Diamond (6.54×3.27mm, marquise cut)
2ct Amethyst Emerald (9.23×6.84mm)
0.25ct Diamond Marquise (6.54×3.27mm)
Difference: 287% (43.53 mm²)
2ct Amethyst (Emerald, 9.23×6.84mm) has approx. 287% more face-up area than 0.25ct Diamond (Marquise, 6.54×3.27mm). In other words, it's 3.87x larger.


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