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2.7ct Ruby (Pear, 10×7mm, Red) vs 3ct Diopside (Emerald, 9.81×7.27mm, Green)


Quick summary: When looked from above (face-up position), 3ct Diopside (9.81×7.27mm, emerald cut) appears 30% larger than 2.7ct Ruby (10×7mm, pear cut). See below how they compare side-by-side on a ring and finger.

2.7ct Ruby (pear cut)
vs
 3ct Diopside (emerald cut)
red
 
green
10×7 mm 9.81×7.27 mm
actual size
Actual size of 2.7ct Ruby (pear cut, 10×7mm, Red color)   Actual size of 3ct Diopside (emerald cut, 9.81×7.27mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 2.7ct Ruby (pear cut, 10×7mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 3ct Diopside (emerald cut, 9.81×7.27mm) 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
 42% vs 44%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.7ct Ruby Pear (10×7mm, Red) and 3ct Diopside Emerald (9.81×7.27mm, 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, Ruby will face-up smaller than Diopside for a given carat weight, because it has higher specific gravity (4 vs. 3.3 - this means it's "heavier" compared to Diopside 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.


2.7 Ct Ruby (Pear) 3 Ct Diopside (Emerald)
10×7 mm vs 9.81×7.27 mm
51.1 mm²   66.33 mm²
Face-up size outline for 3ct Diopside (9.81×7.27mm, emerald cut)
Face-up size outline for 2.7ct Ruby (10×7mm, pear cut)
2.7ct Ruby Pear (10×7mm)
3ct Diopside Emerald (9.81×7.27mm)
Difference: 30% (15.23 mm²)
3ct Diopside (Emerald, 9.81×7.27mm) has approx. 30% more face-up area than 2.7ct Ruby (Pear, 10×7mm).


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