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4.93ct Ruby (Princess, 9.4×9.4mm, Red) vs 4.9ct Diamond (Princess, 9.36×9.36mm, White)


Quick summary: When looked from above (face-up position), 4.93ct Ruby (9.4×9.4mm, princess cut) appears 0.9% larger than 4.9ct Diamond (9.36×9.36mm, princess cut). See below how they compare side-by-side on a ring and finger.

4.93ct Ruby (princess cut)
vs
4.9ct Diamond (princess cut)
red
 
white
9.4×9.4 mm 9.36×9.36 mm
actual size
Actual size of 4.93ct Ruby (princess cut, 9.4×9.4mm, Red color)   Actual size of 4.9ct Diamond (princess cut, 9.36×9.36mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 4.93ct Ruby (princess cut, 9.4×9.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4.9ct Diamond (princess cut, 9.36×9.36mm) 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
56% vs 56%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4.93ct Ruby Princess (9.4×9.4mm, Red) and 4.9ct Diamond Princess (9.36×9.36mm, 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.


4.93 Ct Ruby (Princess) 4.9 Ct Diamond (Princess)
9.4×9.4 mm vs 9.36×9.36 mm
88.36 mm²   87.61 mm²
Face-up size outline for 4.93ct Ruby (9.4×9.4mm, princess cut)
Face-up size outline for 4.9ct Diamond (9.36×9.36mm, princess cut)
4.93ct Ruby Princess (9.4×9.4mm)
4.9ct Diamond Princess (9.36×9.36mm)
Difference: 0.9% (0.75 mm²)
4.93ct Ruby (Princess, 9.4×9.4mm) has approx. 0.9% more face-up area than 4.9ct Diamond (Princess, 9.36×9.36mm).


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