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0.7ct Sapphire (Oval, 6.72×4.48mm, Blue) vs 0.08ct Diamond (Round, 2.8×2.8mm, Light Blue)


Quick summary: When looked from above (face-up position), 0.7ct Sapphire (6.72×4.48mm, oval cut) appears 4 times larger than 0.08ct Colored Diamond (2.8×2.8mm, round cut). See below how they compare side-by-side on a ring and finger.

0.7ct Sapphire (oval cut)
vs
0.08ct Diamond (round cut)
blue
 
light blue
6.72×4.48 mm 2.8×2.8 mm
actual size
Actual size of 0.7ct Sapphire (oval cut, 6.72×4.48mm, Blue color)   Actual size of 0.08ct Diamond (round cut, 2.8×2.8mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.7ct Sapphire (oval cut, 6.72×4.48mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 0.08ct Diamond (round cut, 2.8×2.8mm) 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
27% vs 17%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.7ct Sapphire Oval (6.72×4.48mm, Blue) and 0.08ct Diamond Round (2.8×2.8mm, Light 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.


0.7 Ct Sapphire (Oval) 0.08 Ct Colored Diamond (Round)
6.72×4.48 mm vs 2.8×2.8 mm
24.69 mm²   6.16 mm²
Face-up size outline for 0.7ct Sapphire (6.72×4.48mm, oval cut)
Face-up size outline for 0.08ct Diamond (2.8×2.8mm, round cut)
0.7ct Sapphire Oval (6.72×4.48mm)
0.08ct Colored Diamond Round (2.8×2.8mm)
Difference: 301% (18.53 mm²)
0.7ct Sapphire (Oval, 6.72×4.48mm) has approx. 301% more face-up area than 0.08ct Colored Diamond (Round, 2.8×2.8mm). In other words, it's 4.01x larger.


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