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0.17ct Sapphire (Pear, 4.6×2.77mm, Blue) vs 0.74ct Diamond (Round, 5.88×5.88mm, White)


Quick summary: When looked from above (face-up position), 0.74ct Diamond (5.88×5.88mm, round cut) appears 2.9 times larger than 0.17ct Sapphire (4.6×2.77mm, pear cut). See below how they compare side-by-side on a ring and finger.

0.17ct Sapphire (pear cut)
vs
0.74ct Diamond (round cut)
blue
 
white
4.6×2.77 mm 5.88×5.88 mm
actual size
Actual size of 0.17ct Sapphire (pear cut, 4.6×2.77mm, Blue color)   Actual size of 0.74ct Diamond (round cut, 5.88×5.88mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.17ct Sapphire (pear cut, 4.6×2.77mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.74ct Diamond (round cut, 5.88×5.88mm) 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
17% vs 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.17ct Sapphire Pear (4.6×2.77mm, Blue) and 0.74ct Diamond Round (5.88×5.88mm, 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.


0.17 Ct Sapphire (Pear) 0.74 Ct Diamond (Round)
4.6×2.77 mm vs 5.88×5.88 mm
9.3 mm²   27.15 mm²
Face-up size outline for 0.74ct Diamond (5.88×5.88mm, round cut)
Face-up size outline for 0.17ct Sapphire (4.6×2.77mm, pear cut)
0.17ct Sapphire Pear (4.6×2.77mm)
0.74ct Diamond Round (5.88×5.88mm)
Difference: 192% (17.85 mm²)
0.74ct Diamond (Round, 5.88×5.88mm) has approx. 192% more face-up area than 0.17ct Sapphire (Pear, 4.6×2.77mm). In other words, it's 2.92x larger.


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