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0.4ct Diamond (Marquise, 7.66×3.83mm, White) vs 1.35ct Sapphire (Pear, 9.18×5.53mm, Blue)


Quick summary: When looked from above (face-up position), 1.35ct Sapphire (9.18×5.53mm, pear cut) appears 78% larger than 0.4ct Diamond (7.66×3.83mm, marquise cut). See below how they compare side-by-side on a ring and finger.

0.4ct Diamond (marquise cut)
vs
 1.35ct Sapphire (pear cut)
white
 
blue
7.66×3.83 mm 9.18×5.53 mm
actual size
Actual size of 0.4ct Diamond (marquise cut, 7.66×3.83mm, White color)   Actual size of 1.35ct Sapphire (pear cut, 9.18×5.53mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.4ct Diamond (marquise cut, 7.66×3.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.35ct Sapphire (pear cut, 9.18×5.53mm) 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
 23% vs 33%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.4ct Diamond Marquise (7.66×3.83mm, White) and 1.35ct Sapphire Pear (9.18×5.53mm, 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.


0.4 Ct Diamond (Marquise) 1.35 Ct Sapphire (Pear)
7.66×3.83 mm vs 9.18×5.53 mm
20.83 mm²   37.06 mm²
Face-up size outline for 1.35ct Sapphire (9.18×5.53mm, pear cut)
Face-up size outline for 0.4ct Diamond (7.66×3.83mm, marquise cut)
0.4ct Diamond Marquise (7.66×3.83mm)
1.35ct Sapphire Pear (9.18×5.53mm)
Difference: 78% (16.23 mm²)
1.35ct Sapphire (Pear, 9.18×5.53mm) has approx. 78% more face-up area than 0.4ct Diamond (Marquise, 7.66×3.83mm).


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