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40ct Diamond (Emerald, 22.86×16.93mm, White) vs 0.27ct Sapphire (Oval, 4.8×3.9mm, Blue)


Quick summary: When looked from above (face-up position), 40ct Diamond (22.86×16.93mm, emerald cut) appears 23.5 times larger than 0.27ct Sapphire (4.8×3.9mm, oval cut). See below how they compare side-by-side on a ring and finger.

40ct Diamond (emerald cut)
vs
 0.27ct Sapphire (oval cut)
white
 
blue
22.86×16.93 mm 4.8×3.9 mm
actual size
Actual size of 40ct Diamond (emerald cut, 22.86×16.93mm, White color)   Actual size of 0.27ct Sapphire (oval cut, 4.8×3.9mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 40ct Diamond (emerald cut, 22.86×16.93mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.27ct Sapphire (oval cut, 4.8×3.9mm) 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
 101% vs 24%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Diamond Emerald (22.86×16.93mm, White) and 0.27ct Sapphire Oval (4.8×3.9mm, Blue) 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.


40 Ct Diamond (Emerald) 0.27 Ct Sapphire (Oval)
22.86×16.93 mm vs 4.8×3.9 mm
359.93 mm²   15.35 mm²
Face-up size outline for 40ct Diamond (22.86×16.93mm, emerald cut)
Face-up size outline for 0.27ct Sapphire (4.8×3.9mm, oval cut)
40ct Diamond Emerald (22.86×16.93mm)
0.27ct Sapphire Oval (4.8×3.9mm)
Difference: 2245% (344.58 mm²)
40ct Diamond (Emerald, 22.86×16.93mm) has approx. 2245% more face-up area than 0.27ct Sapphire (Oval, 4.8×3.9mm). In other words, it's 23.45x larger.


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