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1.5ct Sapphire (Round, 6.84×6.84mm, Purple) vs 0.75ct Ruby (Princess, 4.88×4.88mm, Red)


Quick summary: When looked from above (face-up position), 1.5ct Sapphire (6.84×6.84mm, round cut) appears 54% larger than 0.75ct Ruby (4.88×4.88mm, princess cut). See below how they compare side-by-side on a ring and finger.

1.5ct Sapphire (round cut)
vs
 0.75ct Ruby (princess cut)
purple
 
red
6.84×6.84 mm 4.88×4.88 mm
actual size
Actual size of 1.5ct Sapphire (round cut, 6.84×6.84mm, Purple color)   Actual size of 0.75ct Ruby (princess cut, 4.88×4.88mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 1.5ct Sapphire (round cut, 6.84×6.84mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 0.75ct Ruby (princess cut, 4.88×4.88mm) 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
 41% vs 29%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Sapphire Round (6.84×6.84mm, Purple) and 0.75ct Ruby Princess (4.88×4.88mm, 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.


1.5 Ct Sapphire (Round) 0.75 Ct Ruby (Princess)
6.84×6.84 mm vs 4.88×4.88 mm
36.75 mm²   23.81 mm²
Face-up size outline for 1.5ct Sapphire (6.84×6.84mm, round cut)
Face-up size outline for 0.75ct Ruby (4.88×4.88mm, princess cut)
1.5ct Sapphire Round (6.84×6.84mm)
0.75ct Ruby Princess (4.88×4.88mm)
Difference: 54% (12.94 mm²)
1.5ct Sapphire (Round, 6.84×6.84mm) has approx. 54% more face-up area than 0.75ct Ruby (Princess, 4.88×4.88mm).


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