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1ct Sapphire (Cushion, 5.59×5.59mm, Light Blue) vs 0.75ct Ruby (Cushion, 5.08×5.08mm, Red)


Quick summary: When looked from above (face-up position), 1ct Sapphire (5.59×5.59mm, cushion cut) appears 21% larger than 0.75ct Ruby (5.08×5.08mm, cushion cut). See below how they compare side-by-side on a ring and finger.

1ct Sapphire (cushion cut)
vs
0.75ct Ruby (cushion cut)
light blue
 
red
5.59×5.59 mm 5.08×5.08 mm
actual size
Actual size of 1ct Sapphire (cushion cut, 5.59×5.59mm, Light Blue color)   Actual size of 0.75ct Ruby (cushion cut, 5.08×5.08mm, Red color)
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Light Blue 1ct Sapphire (cushion cut, 5.59×5.59mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 0.75ct Ruby (cushion cut, 5.08×5.08mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Sapphire Cushion (5.59×5.59mm, Light Blue) and 0.75ct Ruby Cushion (5.08×5.08mm, Red) 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

Sapphire and Ruby have the same specific gravity so their face-up size depends on the weight, shape and 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.


1 Ct Sapphire (Cushion) 0.75 Ct Ruby (Cushion)
5.59×5.59 mm vs 5.08×5.08 mm
28.12 mm²   23.23 mm²
Face-up size outline for 1ct Sapphire (5.59×5.59mm, cushion cut)
Face-up size outline for 0.75ct Ruby (5.08×5.08mm, cushion cut)
1ct Sapphire Cushion (5.59×5.59mm)
0.75ct Ruby Cushion (5.08×5.08mm)
Difference: 21% (4.89 mm²)
1ct Sapphire Cushion (5.59×5.59mm) has approx. 21% more face-up area than 0.75ct Ruby Cushion (5.08×5.08mm).


Popular comparisons:

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Actual size is currently adjusted to screen.

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