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3.15ct Sapphire (Oval, 11.09×7.39mm, Dark Blue) vs 1ct Ruby (Oval, 7.56×5.04mm, Dark Red)


Quick summary: When looked from above (face-up position), 3.15ct Sapphire (11.09×7.39mm, oval cut) appears 2.2 times larger than 1ct Ruby (7.56×5.04mm, oval cut). See below how they compare side-by-side on a ring and finger.

3.15ct Sapphire (oval cut)
vs
 1ct Ruby (oval cut)
dark blue
 
dark red
11.09×7.39 mm 7.56×5.04 mm
actual size
Actual size of 3.15ct Sapphire (oval cut, 11.09×7.39mm, Dark Blue color)   Actual size of 1ct Ruby (oval cut, 7.56×5.04mm, Dark Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Blue 3.15ct Sapphire (oval cut, 11.09×7.39mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Red 1ct Ruby (oval cut, 7.56×5.04mm) 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
 44% vs 30%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 3.15ct Sapphire Oval (11.09×7.39mm, Dark Blue) and 1ct Ruby Oval (7.56×5.04mm, Dark 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.


3.15 Ct Sapphire (Oval) 1 Ct Ruby (Oval)
11.09×7.39 mm vs 7.56×5.04 mm
67.2 mm²   31.24 mm²
Face-up size outline for 3.15ct Sapphire (11.09×7.39mm, oval cut)
Face-up size outline for 1ct Ruby (7.56×5.04mm, oval cut)
3.15ct Sapphire Oval (11.09×7.39mm)
1ct Ruby Oval (7.56×5.04mm)
Difference: 115% (35.96 mm²)
3.15ct Sapphire (Oval, 11.09×7.39mm) has approx. 115% more face-up area than 1ct Ruby (Oval, 7.56×5.04mm). In other words, it's 2.15x larger.


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