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0.8ct Ruby (Round, 5.55×5.55mm, Red) vs 1ct Sapphire (Cushion, 6.37×5.32mm, Light Blue)


Quick summary: When looked from above (face-up position), 1ct Sapphire (6.37×5.32mm, cushion cut) appears 26% larger than 0.8ct Ruby (5.55×5.55mm, round cut). See below how they compare side-by-side on a ring and finger.

0.8ct Ruby (round cut)
vs
 1ct Sapphire (cushion cut)
red
 
light blue
5.55×5.55 mm 6.37×5.32 mm
actual size
Actual size of 0.8ct Ruby (round cut, 5.55×5.55mm, Red color)   Actual size of 1ct Sapphire (cushion cut, 6.37×5.32mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 0.8ct Ruby (round cut, 5.55×5.55mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 1ct Sapphire (cushion cut, 6.37×5.32mm) 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
 33% vs 32%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.8ct Ruby Round (5.55×5.55mm, Red) and 1ct Sapphire Cushion (6.37×5.32mm, Light Blue) 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

Ruby and Sapphire 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.


0.8 Ct Ruby (Round) 1 Ct Sapphire (Cushion)
5.55×5.55 mm vs 6.37×5.32 mm
24.19 mm²   30.5 mm²
Face-up size outline for 1ct Sapphire (6.37×5.32mm, cushion cut)
Face-up size outline for 0.8ct Ruby (5.55×5.55mm, round cut)
0.8ct Ruby Round (5.55×5.55mm)
1ct Sapphire Cushion (6.37×5.32mm)
Difference: 26% (6.31 mm²)
1ct Sapphire (Cushion, 6.37×5.32mm) has approx. 26% more face-up area than 0.8ct Ruby (Round, 5.55×5.55mm).


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