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7.77ct Ruby (Cushion, 11.07×11.07mm, Red) vs 23.29ct Diamond (Cushion, 16.64×16.64mm, White)


Quick summary: When looked from above (face-up position), 23.29ct Diamond (16.64×16.64mm, cushion cut) appears 2.3 times larger than 7.77ct Ruby (11.07×11.07mm, cushion cut). See below how they compare side-by-side on a ring and finger.

7.77ct Ruby (cushion cut)
vs
 23.29ct Diamond (cushion cut)
red
 
white
11.07×11.07 mm 16.64×16.64 mm
actual size
Actual size of 7.77ct Ruby (cushion cut, 11.07×11.07mm, Red color)   Actual size of 23.29ct Diamond (cushion cut, 16.64×16.64mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 7.77ct Ruby (cushion cut, 11.07×11.07mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 23.29ct Diamond (cushion cut, 16.64×16.64mm) 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
 66% vs 99%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7.77ct Ruby Cushion (11.07×11.07mm, Red) and 23.29ct Diamond Cushion (16.64×16.64mm, 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, Ruby will face-up smaller than Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


7.77 Ct Ruby (Cushion) 23.29 Ct Diamond (Cushion)
11.07×11.07 mm vs 16.64×16.64 mm
110.29 mm²   249.2 mm²
Face-up size outline for 23.29ct Diamond (16.64×16.64mm, cushion cut)
Face-up size outline for 7.77ct Ruby (11.07×11.07mm, cushion cut)
7.77ct Ruby Cushion (11.07×11.07mm)
23.29ct Diamond Cushion (16.64×16.64mm)
Difference: 126% (138.91 mm²)
23.29ct Diamond (Cushion, 16.64×16.64mm) has approx. 126% more face-up area than 7.77ct Ruby (Cushion, 11.07×11.07mm). In other words, it's 2.26x larger.


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