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0.5ct Sapphire (Pear, 6.59×3.97mm, Blue) vs 5.7ct Diamond (Round, 11.61×11.61mm, White)


Quick summary: When looked from above (face-up position), 5.7ct Diamond (11.61×11.61mm, round cut) appears 5.5 times larger than 0.5ct Sapphire (6.59×3.97mm, pear cut). See below how they compare side-by-side on a ring and finger.

0.5ct Sapphire (pear cut)
vs
 5.7ct Diamond (round cut)
blue
 
white
6.59×3.97 mm 11.61×11.61 mm
actual size
Actual size of 0.5ct Sapphire (pear cut, 6.59×3.97mm, Blue color)   Actual size of 5.7ct Diamond (round cut, 11.61×11.61mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.5ct Sapphire (pear cut, 6.59×3.97mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 5.7ct Diamond (round cut, 11.61×11.61mm) 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
 24% vs 69%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.5ct Sapphire Pear (6.59×3.97mm, Blue) and 5.7ct Diamond Round (11.61×11.61mm, 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.


0.5 Ct Sapphire (Pear) 5.7 Ct Diamond (Round)
6.59×3.97 mm vs 11.61×11.61 mm
19.1 mm²   105.87 mm²
Face-up size outline for 5.7ct Diamond (11.61×11.61mm, round cut)
Face-up size outline for 0.5ct Sapphire (6.59×3.97mm, pear cut)
0.5ct Sapphire Pear (6.59×3.97mm)
5.7ct Diamond Round (11.61×11.61mm)
Difference: 454% (86.77 mm²)
5.7ct Diamond (Round, 11.61×11.61mm) has approx. 454% more face-up area than 0.5ct Sapphire (Pear, 6.59×3.97mm). In other words, it's 5.54x larger.


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