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7ct Sapphire (Emerald, 12.22×9.05mm, Blue) vs 35ct Diamond (Cushion, 19.06×19.06mm, White)


Quick summary: When looked from above (face-up position), 35ct Diamond (19.06×19.06mm, cushion cut) appears 3.2 times larger than 7ct Sapphire (12.22×9.05mm, emerald cut). See below how they compare side-by-side on a ring and finger.

7ct Sapphire (emerald cut)
vs
 35ct Diamond (cushion cut)
blue
 
white
12.22×9.05 mm 19.06×19.06 mm
actual size
Actual size of 7ct Sapphire (emerald cut, 12.22×9.05mm, Blue color)   Actual size of 35ct Diamond (cushion cut, 19.06×19.06mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 7ct Sapphire (emerald cut, 12.22×9.05mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 35ct Diamond (cushion cut, 19.06×19.06mm) 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
 54% vs 113%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 7ct Sapphire Emerald (12.22×9.05mm, Blue) and 35ct Diamond Cushion (19.06×19.06mm, White) 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.


7 Ct Sapphire (Emerald) 35 Ct Diamond (Cushion)
12.22×9.05 mm vs 19.06×19.06 mm
102.85 mm²   326.96 mm²
Face-up size outline for 35ct Diamond (19.06×19.06mm, cushion cut)
Face-up size outline for 7ct Sapphire (12.22×9.05mm, emerald cut)
7ct Sapphire Emerald (12.22×9.05mm)
35ct Diamond Cushion (19.06×19.06mm)
Difference: 218% (224.11 mm²)
35ct Diamond (Cushion, 19.06×19.06mm) has approx. 218% more face-up area than 7ct Sapphire (Emerald, 12.22×9.05mm). In other words, it's 3.18x larger.


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