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0.13ct Sapphire (Round, 3.03×3.03mm, Blue) vs 0.32ct Diamond (Round, 4.45×4.45mm, White)


Quick summary: When looked from above (face-up position), 0.32ct Diamond (4.45×4.45mm, round cut) appears 2.2 times larger than 0.13ct Sapphire (3.03×3.03mm, round cut). See below how they compare side-by-side on a ring and finger.

0.13ct Sapphire (round cut)
vs
 0.32ct Diamond (round cut)
blue
 
white
3.03×3.03 mm 4.45×4.45 mm
actual size
Actual size of 0.13ct Sapphire (round cut, 3.03×3.03mm, Blue color)   Actual size of 0.32ct Diamond (round cut, 4.45×4.45mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.13ct Sapphire (round cut, 3.03×3.03mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.32ct Diamond (round cut, 4.45×4.45mm) 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
 18% vs 27%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.13ct Sapphire Round (3.03×3.03mm, Blue) and 0.32ct Diamond Round (4.45×4.45mm, 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.


0.13 Ct Sapphire (Round) 0.32 Ct Diamond (Round)
3.03×3.03 mm vs 4.45×4.45 mm
7.21 mm²   15.55 mm²
Face-up size outline for 0.32ct Diamond (4.45×4.45mm, round cut)
Face-up size outline for 0.13ct Sapphire (3.03×3.03mm, round cut)
0.13ct Sapphire Round (3.03×3.03mm)
0.32ct Diamond Round (4.45×4.45mm)
Difference: 116% (8.34 mm²)
0.32ct Diamond (Round, 4.45×4.45mm) has approx. 116% more face-up area than 0.13ct Sapphire (Round, 3.03×3.03mm). In other words, it's 2.16x larger.


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