×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

5ct Emerald (Cushion, 10.9×10.9mm, Dark Green) vs 1ct Diamond (Round, 6.5×6.5mm, White)


Quick summary: When looked from above (face-up position), 5ct Emerald (10.9×10.9mm, cushion cut) appears 3.2 times larger than 1ct Diamond (6.5×6.5mm, round cut). See below how they compare side-by-side on a ring and finger.

5ct Emerald (cushion cut)
vs
 1ct Diamond (round cut)
dark green
 
white
10.9×10.9 mm 6.5×6.5 mm
actual size
Actual size of 5ct Emerald (cushion cut, 10.9×10.9mm, Dark Green color)   Actual size of 1ct Diamond (round cut, 6.5×6.5mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Green 5ct Emerald (cushion cut, 10.9×10.9mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1ct Diamond (round cut, 6.5×6.5mm) 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
 65% vs 39%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5ct Emerald Cushion (10.9×10.9mm, Dark Green) and 1ct Diamond Round (6.5×6.5mm, White) 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 Emerald for a given carat weight, because it has higher specific gravity (3.52 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.


5 Ct Emerald (Cushion) 1 Ct Diamond (Round)
10.9×10.9 mm vs 6.5×6.5 mm
106.93 mm²   33.18 mm²
Face-up size outline for 5ct Emerald (10.9×10.9mm, cushion cut)
Face-up size outline for 1ct Diamond (6.5×6.5mm, round cut)
5ct Emerald Cushion (10.9×10.9mm)
1ct Diamond Round (6.5×6.5mm)
Difference: 222% (73.75 mm²)
5ct Emerald (Cushion, 10.9×10.9mm) has approx. 222% more face-up area than 1ct Diamond (Round, 6.5×6.5mm). In other words, it's 3.22x larger.


Popular comparisons: