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0.9ct Sapphire (Round, 5.77×5.77mm, Light Gray) vs 0.46ct Diamond (Round, 5.02×5.02mm, White)


Quick summary: When looked from above (face-up position), 0.9ct Sapphire (5.77×5.77mm, round cut) appears 32% larger than 0.46ct Diamond (5.02×5.02mm, round cut). See below how they compare side-by-side on a ring and finger.

0.9ct Sapphire (round cut)
vs
 0.46ct Diamond (round cut)
light gray
 
white
5.77×5.77 mm 5.02×5.02 mm
actual size
Actual size of 0.9ct Sapphire (round cut, 5.77×5.77mm, Light Gray color)   Actual size of 0.46ct Diamond (round cut, 5.02×5.02mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Gray 0.9ct Sapphire (round cut, 5.77×5.77mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.46ct Diamond (round cut, 5.02×5.02mm) 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
 35% vs 30%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.9ct Sapphire Round (5.77×5.77mm, Light Gray) and 0.46ct Diamond Round (5.02×5.02mm, 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.


0.9 Ct Sapphire (Round) 0.46 Ct Diamond (Round)
5.77×5.77 mm vs 5.02×5.02 mm
26.15 mm²   19.79 mm²
Face-up size outline for 0.9ct Sapphire (5.77×5.77mm, round cut)
Face-up size outline for 0.46ct Diamond (5.02×5.02mm, round cut)
0.9ct Sapphire Round (5.77×5.77mm)
0.46ct Diamond Round (5.02×5.02mm)
Difference: 32% (6.36 mm²)
0.9ct Sapphire (Round, 5.77×5.77mm) has approx. 32% more face-up area than 0.46ct Diamond (Round, 5.02×5.02mm).


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