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1.5ct Sapphire (Cabochon, 7.83×5.22mm, Blue) vs 0.5ct Ruby (Oval, 6×4mm, Red)


Quick summary: When looked from above (face-up position), 1.5ct Sapphire (7.83×5.22mm, cabochon cut) appears 70% larger than 0.5ct Ruby (6×4mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.5ct Sapphire (cabochon cut)
vs
 0.5ct Ruby (oval cut)
blue
 
red
7.83×5.22 mm 6×4 mm
actual size
Actual size of 1.5ct Sapphire (cabochon cut, 7.83×5.22mm, Blue color)   Actual size of 0.5ct Ruby (oval cut, 6×4mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.5ct Sapphire (cabochon cut, 7.83×5.22mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 0.5ct Ruby (oval cut, 6×4mm) 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
 31% vs 24%
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Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Sapphire Cabochon (7.83×5.22mm, Blue) and 0.5ct Ruby Oval (6×4mm, 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 (Cabochon) 0.5 Ct Ruby (Oval)
7.83×5.22 mm vs 6×4 mm
33.52 mm²   19.68 mm²
Face-up size outline for 1.5ct Sapphire (7.83×5.22mm, cabochon cut)
Face-up size outline for 0.5ct Ruby (6×4mm, oval cut)
1.5ct Sapphire Cabochon (7.83×5.22mm)
0.5ct Ruby Oval (6×4mm)
Difference: 70% (13.84 mm²)
1.5ct Sapphire (Cabochon, 7.83×5.22mm) has approx. 70% more face-up area than 0.5ct Ruby (Oval, 6×4mm).


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