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0.8ct Diamond (Round, 5.8×5.8mm, White) vs 0.8ct Sapphire (Round, 5.8×5.8mm, Blue)


Quick summary: Compared gemstones have equal face-up area.

0.8ct Diamond (round cut)
vs
 0.8ct Sapphire (round cut)
white
 
blue
5.8×5.8 mm 5.8×5.8 mm
actual size
Actual size of 0.8ct Diamond (round cut, 5.8×5.8mm, White color)   Actual size of 0.8ct Sapphire (round cut, 5.8×5.8mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.8ct Diamond (round cut, 5.8×5.8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.8ct Sapphire (round cut, 5.8×5.8mm) 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 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.8ct Diamond Round (5.8×5.8mm, White) and 0.8ct Sapphire Round (5.8×5.8mm, Blue) 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.


0.8 Ct Diamond (Round) 0.8 Ct Sapphire (Round)
5.8×5.8 mm vs 5.8×5.8 mm
26.42 mm²   26.42 mm²
Face-up size outline for true size of 5.8×5.8mm
0.8ct Diamond Round (5.8×5.8mm)
0.8ct Sapphire Round (5.8×5.8mm)
Difference: 0% (0 mm²)
0.8ct Diamond (Round, 5.8×5.8mm) and 0.8ct Sapphire (Round, 5.8×5.8mm) have the same face-up area.


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