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30ct Amethyst (Pear, 29.6×17.83mm, Violet) vs 20ct Emerald (Pear, 25.7×15.48mm, Green)


Quick summary: When looked from above (face-up position), 30ct Amethyst (29.6×17.83mm, pear cut) appears 33% larger than 20ct Emerald (25.7×15.48mm, pear cut). See below how they compare side-by-side on a ring and finger.

30ct Amethyst (pear cut)
vs
 20ct Emerald (pear cut)
violet
 
green
29.6×17.83 mm 25.7×15.48 mm
actual size
Actual size of 30ct Amethyst (pear cut, 29.6×17.83mm, Violet color)   Actual size of 20ct Emerald (pear cut, 25.7×15.48mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 30ct Amethyst (pear cut, 29.6×17.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 20ct Emerald (pear cut, 25.7×15.48mm) 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
 106% vs 92%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Amethyst Pear (29.6×17.83mm, Violet) and 20ct Emerald Pear (25.7×15.48mm, Green) 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, Emerald will face-up slightly smaller than Amethyst for a given carat weight, because it has higher specific gravity (2.72 vs. 2.65 - this means it's "slightly 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.


30 Ct Amethyst (Pear) 20 Ct Emerald (Pear)
29.6×17.83 mm vs 25.7×15.48 mm
385.27 mm²   290.42 mm²
Face-up size outline for 30ct Amethyst (29.6×17.83mm, pear cut)
Face-up size outline for 20ct Emerald (25.7×15.48mm, pear cut)
30ct Amethyst Pear (29.6×17.83mm)
20ct Emerald Pear (25.7×15.48mm)
Difference: 33% (94.85 mm²)
30ct Amethyst (Pear, 29.6×17.83mm) has approx. 33% more face-up area than 20ct Emerald (Pear, 25.7×15.48mm).


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