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1.7ct Sapphire (Princess, 6.41×6.41mm, Blue) vs 1.3ct Diamond (Emerald, 7.29×5.4mm, White)


Quick summary: When looked from above (face-up position), 1.7ct Sapphire (6.41×6.41mm, princess cut) appears 12% larger than 1.3ct Diamond (7.29×5.4mm, emerald cut). See below how they compare side-by-side on a ring and finger.

1.7ct Sapphire (princess cut)
vs
 1.3ct Diamond (emerald cut)
blue
 
white
6.41×6.41 mm 7.29×5.4 mm
actual size
Actual size of 1.7ct Sapphire (princess cut, 6.41×6.41mm, Blue color)   Actual size of 1.3ct Diamond (emerald cut, 7.29×5.4mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.7ct Sapphire (princess cut, 6.41×6.41mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1.3ct Diamond (emerald cut, 7.29×5.4mm) 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
 38% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.7ct Sapphire Princess (6.41×6.41mm, Blue) and 1.3ct Diamond Emerald (7.29×5.4mm, White) 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

All things being equal, Sapphire will face-up smaller than Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond of the same size). Face-up size also depends heavily on the 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.


1.7 Ct Sapphire (Princess) 1.3 Ct Diamond (Emerald)
6.41×6.41 mm vs 7.29×5.4 mm
41.09 mm²   36.61 mm²
Face-up size outline for 1.7ct Sapphire (6.41×6.41mm, princess cut)
Face-up size outline for 1.3ct Diamond (7.29×5.4mm, emerald cut)
1.7ct Sapphire Princess (6.41×6.41mm)
1.3ct Diamond Emerald (7.29×5.4mm)
Difference: 12% (4.48 mm²)
1.7ct Sapphire (Princess, 6.41×6.41mm) has approx. 12% more face-up area than 1.3ct Diamond (Emerald, 7.29×5.4mm).


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