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8.5ct Diopside (Marquise, 21.16×10.58mm, Green) vs 8.5ct Emerald (Marquise, 22.56×11.28mm, Green)


Quick summary: When looked from above (face-up position), 8.5ct Emerald (22.56×11.28mm, marquise cut) appears 14% larger than 8.5ct Diopside (21.16×10.58mm, marquise cut). See below how they compare side-by-side on a ring and finger.

8.5ct Diopside (marquise cut)
vs
 8.5ct Emerald (marquise cut)
green
 
green
21.16×10.58 mm 22.56×11.28 mm
actual size
Actual size of 8.5ct Diopside (marquise cut, 21.16×10.58mm, Green color)   Actual size of 8.5ct Emerald (marquise cut, 22.56×11.28mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 8.5ct Diopside (marquise cut, 21.16×10.58mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 8.5ct Emerald (marquise cut, 22.56×11.28mm) 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
 63% vs 67%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8.5ct Diopside Marquise (21.16×10.58mm, Green) and 8.5ct Emerald Marquise (22.56×11.28mm, 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, Diopside will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.3 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


8.5 Ct Diopside (Marquise) 8.5 Ct Emerald (Marquise)
21.16×10.58 mm vs 22.56×11.28 mm
158.95 mm²   180.68 mm²
Face-up size outline for 8.5ct Emerald (22.56×11.28mm, marquise cut)
Face-up size outline for 8.5ct Diopside (21.16×10.58mm, marquise cut)
8.5ct Diopside Marquise (21.16×10.58mm)
8.5ct Emerald Marquise (22.56×11.28mm)
Difference: 14% (21.73 mm²)
8.5ct Emerald (Marquise, 22.56×11.28mm) has approx. 14% more face-up area than 8.5ct Diopside (Marquise, 21.16×10.58mm).


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