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1.54ct Diamond (Oval, 9.65×6.42mm, Bluish Green) vs 3.36ct Sapphire (Cushion, 9.8×7.3mm, Dark Violet)


Quick summary: When looked from above (face-up position), 3.36ct Sapphire (9.8×7.3mm, cushion cut) appears 27% 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.

1.54ct Diamond (oval cut)
vs
 3.36ct Sapphire (cushion cut)
bluish green
 
dark violet
9.65×6.42 mm 9.8×7.3 mm
actual size
Actual size of 1.54ct Diamond (oval cut, 9.65×6.42mm, Bluish Green color)   Actual size of 3.36ct Sapphire (cushion cut, 9.8×7.3mm, Dark Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 1.54ct Diamond (oval cut, 9.65×6.42mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Violet 3.36ct Sapphire (cushion cut, 9.8×7.3mm) 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 44%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.54ct Diamond Oval (9.65×6.42mm, Bluish Green) and 3.36ct Sapphire Cushion (9.8×7.3mm, Dark Violet) 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.


1.54 Ct Colored Diamond (Oval) 3.36 Ct Sapphire (Cushion)
9.65×6.42 mm vs 9.8×7.3 mm
50.8 mm²   64.39 mm²
Face-up size outline for 3.36ct Sapphire (9.8×7.3mm, cushion cut)
Face-up size outline for 1.54ct Diamond (9.65×6.42mm, oval cut)
1.54ct Colored Diamond Oval (9.65×6.42mm)
3.36ct Sapphire Cushion (9.8×7.3mm)
Difference: 27% (13.59 mm²)
3.36ct Sapphire (Cushion, 9.8×7.3mm) has approx. 27% more face-up area than 1.54ct Colored Diamond (Oval, 9.65×6.42mm).


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