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2ct Sapphire (Marquise, 12.44×6.22mm, Blue) vs 1.54ct Diamond (Oval, 9.65×6.42mm, Bluish Green)


Quick summary: When looked from above (face-up position), 2ct Sapphire (12.44×6.22mm, marquise cut) appears 8% larger than 1.54ct Colored Diamond (9.65×6.42mm, oval cut). See below how they compare side-by-side on a ring and finger.

2ct Sapphire (marquise cut)
vs
 1.54ct Diamond (oval cut)
blue
 
bluish green
12.44×6.22 mm 9.65×6.42 mm
actual size
Actual size of 2ct Sapphire (marquise cut, 12.44×6.22mm, Blue color)   Actual size of 1.54ct Diamond (oval cut, 9.65×6.42mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 2ct Sapphire (marquise cut, 12.44×6.22mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 1.54ct Diamond (oval cut, 9.65×6.42mm) 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
 37% vs 38%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2ct Sapphire Marquise (12.44×6.22mm, Blue) and 1.54ct Diamond Oval (9.65×6.42mm, Bluish Green) 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.


2 Ct Sapphire (Marquise) 1.54 Ct Colored Diamond (Oval)
12.44×6.22 mm vs 9.65×6.42 mm
54.94 mm²   50.8 mm²
Face-up size outline for 2ct Sapphire (12.44×6.22mm, marquise cut)
Face-up size outline for 1.54ct Diamond (9.65×6.42mm, oval cut)
2ct Sapphire Marquise (12.44×6.22mm)
1.54ct Colored Diamond Oval (9.65×6.42mm)
Difference: 8% (4.14 mm²)
2ct Sapphire (Marquise, 12.44×6.22mm) has approx. 8% more face-up area than 1.54ct Colored Diamond (Oval, 9.65×6.42mm).


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