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3ct Sapphire (Round, 8.62×8.62mm, White) vs 3ct Ruby (Emerald, 9×7mm, Red)


Quick summary: When looked from above (face-up position), 3ct Ruby (9×7mm, emerald cut) appears 0.4% larger than 3ct Sapphire (8.62×8.62mm, round cut). See below how they compare side-by-side on a ring and finger.

3ct Sapphire (round cut)
vs
 3ct Ruby (emerald cut)
white
 
red
8.62×8.62 mm 9×7 mm
actual size
Actual size of 3ct Sapphire (round cut, 8.62×8.62mm, White color)   Actual size of 3ct Ruby (emerald cut, 9×7mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 3ct Sapphire (round cut, 8.62×8.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 3ct Ruby (emerald cut, 9×7mm) 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
 52% vs 42%
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Ring diameter: 16.9 mm
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Actual sizes of 3ct Sapphire Round (8.62×8.62mm, White) and 3ct Ruby Emerald (9×7mm, 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 Ct Sapphire (Round) 3 Ct Ruby (Emerald)
8.62×8.62 mm vs 9×7 mm
58.36 mm²   58.59 mm²
Face-up size outline for 3ct Ruby (9×7mm, emerald cut)
Face-up size outline for 3ct Sapphire (8.62×8.62mm, round cut)
3ct Sapphire Round (8.62×8.62mm)
3ct Ruby Emerald (9×7mm)
Difference: 0.4% (0.23 mm²)
3ct Ruby (Emerald, 9×7mm) has approx. 0.4% more face-up area than 3ct Sapphire (Round, 8.62×8.62mm).


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