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1ct Diamond (Trillion, 7.74×7.74mm, White) vs 5.59ct Sapphire (Cushion, 9.92×9.92mm, Dark Bluish Green)


Quick summary: When looked from above (face-up position), 5.59ct Sapphire (9.92×9.92mm, cushion cut) appears 2.4 times larger than 1ct Diamond (7.74×7.74mm, trillion cut). See below how they compare side-by-side on a ring and finger.

1ct Diamond (trillion cut)
vs
 5.59ct Sapphire (cushion cut)
white
 
dark bluish green
7.74×7.74 mm 9.92×9.92 mm
actual size
Actual size of 1ct Diamond (trillion cut, 7.74×7.74mm, White color)   Actual size of 5.59ct Sapphire (cushion cut, 9.92×9.92mm, Dark Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1ct Diamond (trillion cut, 7.74×7.74mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Bluish Green 5.59ct Sapphire (cushion cut, 9.92×9.92mm) 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
 46% vs 59%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Diamond Trillion (7.74×7.74mm, White) and 5.59ct Sapphire Cushion (9.92×9.92mm, Dark 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.


1 Ct Diamond (Trillion) 5.59 Ct Sapphire (Cushion)
7.74×7.74 mm vs 9.92×9.92 mm
37.14 mm²   88.57 mm²
Face-up size outline for 5.59ct Sapphire (9.92×9.92mm, cushion cut)
Face-up size outline for 1ct Diamond (7.74×7.74mm, trillion cut)
1ct Diamond Trillion (7.74×7.74mm)
5.59ct Sapphire Cushion (9.92×9.92mm)
Difference: 138% (51.43 mm²)
5.59ct Sapphire (Cushion, 9.92×9.92mm) has approx. 138% more face-up area than 1ct Diamond (Trillion, 7.74×7.74mm). In other words, it's 2.38x larger.


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