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0.15ct Sapphire (Baguette, 3.68×2.45mm, Blue) vs 0.15ct Diamond (Emerald, 3.55×2.63mm, White)


Quick summary: When looked from above (face-up position), 0.15ct Sapphire (3.68×2.45mm, baguette cut) appears 4% larger than 0.15ct Diamond (3.55×2.63mm, emerald cut). See below how they compare side-by-side on a ring and finger.

0.15ct Sapphire (baguette cut)
vs
0.15ct Diamond (emerald cut)
blue
 
white
3.68×2.45 mm 3.55×2.63 mm
actual size
Actual size of 0.15ct Sapphire (baguette cut, 3.68×2.45mm, Blue color)   Actual size of 0.15ct Diamond (emerald cut, 3.55×2.63mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.15ct Sapphire (baguette cut, 3.68×2.45mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.15ct Diamond (emerald cut, 3.55×2.63mm) 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
15% vs 16%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.15ct Sapphire Baguette (3.68×2.45mm, Blue) and 0.15ct Diamond Emerald (3.55×2.63mm, 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.


0.15 Ct Sapphire (Baguette) 0.15 Ct Diamond (Emerald)
3.68×2.45 mm vs 3.55×2.63 mm
9.02 mm²   8.68 mm²
Face-up size outline for 0.15ct Sapphire (3.68×2.45mm, baguette cut)
Face-up size outline for 0.15ct Diamond (3.55×2.63mm, emerald cut)
0.15ct Sapphire Baguette (3.68×2.45mm)
0.15ct Diamond Emerald (3.55×2.63mm)
Difference: 4% (0.34 mm²)
0.15ct Sapphire (Baguette, 3.68×2.45mm) has approx. 4% more face-up area than 0.15ct Diamond (Emerald, 3.55×2.63mm).


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