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4.7ct Sapphire (Round, 10.01×10.01mm, 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 4.2 times larger than 4.7ct Sapphire (10.01×10.01mm, round cut). See below how they compare side-by-side on a ring and finger.

4.7ct Sapphire (round cut)
vs
 35ct Diamond (cushion cut)
blue
 
white
10.01×10.01 mm 19.06×19.06 mm
actual size
Actual size of 4.7ct Sapphire (round cut, 10.01×10.01mm, 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 4.7ct Sapphire (round cut, 10.01×10.01mm) 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
 60% vs 113%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4.7ct Sapphire Round (10.01×10.01mm, 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.


4.7 Ct Sapphire (Round) 35 Ct Diamond (Cushion)
10.01×10.01 mm vs 19.06×19.06 mm
78.7 mm²   326.96 mm²
Face-up size outline for 35ct Diamond (19.06×19.06mm, cushion cut)
Face-up size outline for 4.7ct Sapphire (10.01×10.01mm, round cut)
4.7ct Sapphire Round (10.01×10.01mm)
35ct Diamond Cushion (19.06×19.06mm)
Difference: 315% (248.26 mm²)
35ct Diamond (Cushion, 19.06×19.06mm) has approx. 315% more face-up area than 4.7ct Sapphire (Round, 10.01×10.01mm). In other words, it's 4.15x larger.


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