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4.5ct Diamond (Round, 10.73×10.73mm, White) vs 0.93ct Sapphire (Round, 6×6mm, Light Gray)


Quick summary: When looked from above (face-up position), 4.5ct Diamond (10.73×10.73mm, round cut) appears 3.2 times larger than 0.93ct Sapphire (6×6mm, round cut). See below how they compare side-by-side on a ring and finger.

4.5ct Diamond (round cut)
vs
 0.93ct Sapphire (round cut)
white
 
light gray
10.73×10.73 mm 6×6 mm
actual size
Actual size of 4.5ct Diamond (round cut, 10.73×10.73mm, White color)   Actual size of 0.93ct Sapphire (round cut, 6×6mm, Light Gray color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 4.5ct Diamond (round cut, 10.73×10.73mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Gray 0.93ct Sapphire (round cut, 6×6mm) 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
 64% vs 36%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4.5ct Diamond Round (10.73×10.73mm, White) and 0.93ct Sapphire Round (6×6mm, Light Gray) 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.


4.5 Ct Diamond (Round) 0.93 Ct Sapphire (Round)
10.73×10.73 mm vs 6×6 mm
90.43 mm²   28.27 mm²
Face-up size outline for 4.5ct Diamond (10.73×10.73mm, round cut)
Face-up size outline for 0.93ct Sapphire (6×6mm, round cut)
4.5ct Diamond Round (10.73×10.73mm)
0.93ct Sapphire Round (6×6mm)
Difference: 220% (62.16 mm²)
4.5ct Diamond (Round, 10.73×10.73mm) has approx. 220% more face-up area than 0.93ct Sapphire (Round, 6×6mm). In other words, it's 3.2x larger.


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