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0.65ct Ruby (Oval, 6.56×4.37mm, Red) vs 2.9ct Sapphire (Cushion, 7.5×8.5mm, Blue)


Quick summary: When looked from above (face-up position), 2.9ct Sapphire (7.5×8.5mm, cushion cut) appears 2.4 times larger than 0.65ct Ruby (6.56×4.37mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.65ct Ruby (oval cut)
vs
 2.9ct Sapphire (cushion cut)
red
 
blue
6.56×4.37 mm 7.5×8.5 mm
actual size
Actual size of 0.65ct Ruby (oval cut, 6.56×4.37mm, Red color)   Actual size of 2.9ct Sapphire (cushion cut, 7.5×8.5mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 0.65ct Ruby (oval cut, 6.56×4.37mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 2.9ct Sapphire (cushion cut, 7.5×8.5mm) 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
 26% vs 51%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.65ct Ruby Oval (6.56×4.37mm, Red) and 2.9ct Sapphire Cushion (7.5×8.5mm, 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.


0.65 Ct Ruby (Oval) 2.9 Ct Sapphire (Cushion)
6.56×4.37 mm vs 7.5×8.5 mm
23.51 mm²   57.38 mm²
Face-up size outline for 2.9ct Sapphire (7.5×8.5mm, cushion cut)
Face-up size outline for 0.65ct Ruby (6.56×4.37mm, oval cut)
0.65ct Ruby Oval (6.56×4.37mm)
2.9ct Sapphire Cushion (7.5×8.5mm)
Difference: 144% (33.87 mm²)
2.9ct Sapphire (Cushion, 7.5×8.5mm) has approx. 144% more face-up area than 0.65ct Ruby (Oval, 6.56×4.37mm). In other words, it's 2.44x larger.


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