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1ct Sapphire (Round, 5.98×5.98mm, Dark Blue) vs 1ct Ruby (Emerald, 6.39×4.73mm, Dark Red)


Quick summary: When looked from above (face-up position), 1ct Ruby (6.39×4.73mm, emerald cut) appears 0.1% larger than 1ct Sapphire (5.98×5.98mm, round cut). See below how they compare side-by-side on a ring and finger.

1ct Sapphire (round cut)
vs
 1ct Ruby (emerald cut)
dark blue
 
dark red
5.98×5.98 mm 6.39×4.73 mm
actual size
Actual size of 1ct Sapphire (round cut, 5.98×5.98mm, Dark Blue color)   Actual size of 1ct Ruby (emerald cut, 6.39×4.73mm, 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 1ct Sapphire (round cut, 5.98×5.98mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Red 1ct Ruby (emerald cut, 6.39×4.73mm) 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
 36% vs 28%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Sapphire Round (5.98×5.98mm, Dark Blue) and 1ct Ruby Emerald (6.39×4.73mm, 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.


1 Ct Sapphire (Round) 1 Ct Ruby (Emerald)
5.98×5.98 mm vs 6.39×4.73 mm
28.09 mm²   28.11 mm²
Face-up size outline for 1ct Ruby (6.39×4.73mm, emerald cut)
Face-up size outline for 1ct Sapphire (5.98×5.98mm, round cut)
1ct Sapphire Round (5.98×5.98mm)
1ct Ruby Emerald (6.39×4.73mm)
Difference: 0.1% (0.02 mm²)
1ct Ruby (Emerald, 6.39×4.73mm) has approx. 0.1% more face-up area than 1ct Sapphire (Round, 5.98×5.98mm).


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