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1.5ct Diamond (Marquise, 11.9×5.95mm, White) vs 2ct Sapphire (Oval, 9.53×6.35mm, Blue)


Quick summary: When looked from above (face-up position), 1.5ct Diamond (11.9×5.95mm, marquise cut) appears 1% larger than 2ct Sapphire (9.53×6.35mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.5ct Diamond (marquise cut)
vs
 2ct Sapphire (oval cut)
white
 
blue
11.9×5.95 mm 9.53×6.35 mm
actual size
Actual size of 1.5ct Diamond (marquise cut, 11.9×5.95mm, White color)   Actual size of 2ct Sapphire (oval cut, 9.53×6.35mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.5ct Diamond (marquise cut, 11.9×5.95mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 2ct Sapphire (oval cut, 9.53×6.35mm) 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 38%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.5ct Diamond Marquise (11.9×5.95mm, White) and 2ct Sapphire Oval (9.53×6.35mm, 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.


1.5 Ct Diamond (Marquise) 2 Ct Sapphire (Oval)
11.9×5.95 mm vs 9.53×6.35 mm
50.27 mm²   49.62 mm²
Face-up size outline for 1.5ct Diamond (11.9×5.95mm, marquise cut)
Face-up size outline for 2ct Sapphire (9.53×6.35mm, oval cut)
1.5ct Diamond Marquise (11.9×5.95mm)
2ct Sapphire Oval (9.53×6.35mm)
Difference: 1% (0.65 mm²)
1.5ct Diamond (Marquise, 11.9×5.95mm) has approx. 1% more face-up area than 2ct Sapphire (Oval, 9.53×6.35mm).


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