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1.55ct Diamond (Oval, 9.39×6.26mm, White) vs 2.23ct Sapphire (Oval, 9.45×6.21mm, Dark Blue)


Quick summary: When looked from above (face-up position), 1.55ct Diamond (9.39×6.26mm, oval cut) appears 0.2% larger than 2.23ct Sapphire (9.45×6.21mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.55ct Diamond (oval cut)
vs
 2.23ct Sapphire (oval cut)
white
 
dark blue
9.39×6.26 mm 9.45×6.21 mm
actual size
Actual size of 1.55ct Diamond (oval cut, 9.39×6.26mm, White color)   Actual size of 2.23ct Sapphire (oval cut, 9.45×6.21mm, Dark Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.55ct Diamond (oval cut, 9.39×6.26mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Blue 2.23ct Sapphire (oval cut, 9.45×6.21mm) 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
 38% vs 37%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.55ct Diamond Oval (9.39×6.26mm, White) and 2.23ct Sapphire Oval (9.45×6.21mm, Dark 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.


1.55 Ct Diamond (Oval) 2.23 Ct Sapphire (Oval)
9.39×6.26 mm vs 9.45×6.21 mm
48.2 mm²   48.12 mm²
Face-up size outline for 1.55ct Diamond (9.39×6.26mm, oval cut)
Face-up size outline for 2.23ct Sapphire (9.45×6.21mm, oval cut)
1.55ct Diamond Oval (9.39×6.26mm)
2.23ct Sapphire Oval (9.45×6.21mm)
Difference: 0.2% (0.08 mm²)
1.55ct Diamond (Oval, 9.39×6.26mm) has approx. 0.2% more face-up area than 2.23ct Sapphire (Oval, 9.45×6.21mm).


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