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9.5ct Sapphire (Emerald, 13.53×10.02mm, Blue) vs 10ct Diamond (Emerald, 14.39×10.66mm, White)


Quick summary: When looked from above (face-up position), 10ct Diamond (14.39×10.66mm, emerald cut) appears 13% larger than 9.5ct Sapphire (13.53×10.02mm, emerald cut). See below how they compare side-by-side on a ring and finger.

9.5ct Sapphire (emerald cut)
vs
 10ct Diamond (emerald cut)
blue
 
white
13.53×10.02 mm 14.39×10.66 mm
actual size
Actual size of 9.5ct Sapphire (emerald cut, 13.53×10.02mm, Blue color)   Actual size of 10ct Diamond (emerald cut, 14.39×10.66mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 9.5ct Sapphire (emerald cut, 13.53×10.02mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 10ct Diamond (emerald cut, 14.39×10.66mm) 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
 60% vs 64%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9.5ct Sapphire Emerald (13.53×10.02mm, Blue) and 10ct Diamond Emerald (14.39×10.66mm, 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.


9.5 Ct Sapphire (Emerald) 10 Ct Diamond (Emerald)
13.53×10.02 mm vs 14.39×10.66 mm
126.08 mm²   142.66 mm²
Face-up size outline for 10ct Diamond (14.39×10.66mm, emerald cut)
Face-up size outline for 9.5ct Sapphire (13.53×10.02mm, emerald cut)
9.5ct Sapphire Emerald (13.53×10.02mm)
10ct Diamond Emerald (14.39×10.66mm)
Difference: 13% (16.58 mm²)
10ct Diamond (Emerald, 14.39×10.66mm) has approx. 13% more face-up area than 9.5ct Sapphire (Emerald, 13.53×10.02mm).


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