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7ct Diaspore (Oval, 15.27×10.18mm, Light Yellowish Green) vs 19ct Emerald (Emerald, 19.43×14.39mm, Green)


Quick summary: When looked from above (face-up position), 19ct Emerald (19.43×14.39mm, emerald cut) appears 2 times larger than 7ct Diaspore (15.27×10.18mm, oval cut). See below how they compare side-by-side on a ring and finger.

7ct Diaspore (oval cut)
vs
 19ct Emerald (emerald cut)
light yellowish green
 
green
15.27×10.18 mm 19.43×14.39 mm
actual size
Actual size of 7ct Diaspore (oval cut, 15.27×10.18mm, Light Yellowish Green color)   Actual size of 19ct Emerald (emerald cut, 19.43×14.39mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Yellowish Green 7ct Diaspore (oval cut, 15.27×10.18mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 19ct Emerald (emerald cut, 19.43×14.39mm) 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
 61% vs 86%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7ct Diaspore Oval (15.27×10.18mm, Light Yellowish Green) and 19ct Emerald Emerald (19.43×14.39mm, 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, Diaspore will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (3.4 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.


7 Ct Diaspore (Oval) 19 Ct Emerald (Emerald)
15.27×10.18 mm vs 19.43×14.39 mm
127.47 mm²   260.03 mm²
Face-up size outline for 19ct Emerald (19.43×14.39mm, emerald cut)
Face-up size outline for 7ct Diaspore (15.27×10.18mm, oval cut)
7ct Diaspore Oval (15.27×10.18mm)
19ct Emerald Emerald (19.43×14.39mm)
Difference: 104% (132.56 mm²)
19ct Emerald (Emerald, 19.43×14.39mm) has approx. 104% more face-up area than 7ct Diaspore (Oval, 15.27×10.18mm). In other words, it's 2.04x larger.


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