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40ct Amethyst (Pear, 29×19.63mm, Violet) vs 40ct Diamond (Pear, 29×19mm, Black)


Quick summary: When looked from above (face-up position), 40ct Amethyst (29×19.63mm, pear cut) appears 3% larger than 40ct Colored Diamond (29×19mm, pear cut). See below how they compare side-by-side on a ring and finger.

40ct Amethyst (pear cut)
vs
 40ct Diamond (pear cut)
violet
 
black
29×19.63 mm 29×19 mm
actual size
Actual size of 40ct Amethyst (pear cut, 29×19.63mm, Violet color)   Actual size of 40ct Diamond (pear cut, 29×19mm, Black color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 40ct Amethyst (pear cut, 29×19.63mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Black 40ct Diamond (pear cut, 29×19mm) 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
 117% vs 113%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Amethyst Pear (29×19.63mm, Violet) and 40ct Diamond Pear (29×19mm, Black) 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.


40 Ct Amethyst (Pear) 40 Ct Colored Diamond (Pear)
29×19.63 mm vs 29×19 mm
415.57 mm²   402.23 mm²
Face-up size outline for 40ct Amethyst (29×19.63mm, pear cut)
Face-up size outline for 40ct Diamond (29×19mm, pear cut)
40ct Amethyst Pear (29×19.63mm)
40ct Colored Diamond Pear (29×19mm)
Difference: 3% (13.34 mm²)
40ct Amethyst (Pear, 29×19.63mm) has approx. 3% more face-up area than 40ct Colored Diamond (Pear, 29×19mm).


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