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2.7ct Sapphire (Round, 8.32×8.32mm, Blue) vs 2.1ct Diamond (Round, 8.32×8.32mm, White)


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

2.7ct Sapphire (round cut)
vs
 2.1ct Diamond (round cut)
blue
 
white
8.32×8.32 mm 8.32×8.32 mm
actual size
Actual size of 2.7ct Sapphire (round cut, 8.32×8.32mm, Blue color)   Actual size of 2.1ct Diamond (round cut, 8.32×8.32mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 2.7ct Sapphire (round cut, 8.32×8.32mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.1ct Diamond (round cut, 8.32×8.32mm) 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
 50% vs 50%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.7ct Sapphire Round (8.32×8.32mm, Blue) and 2.1ct Diamond Round (8.32×8.32mm, 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.


2.7 Ct Sapphire (Round) 2.1 Ct Diamond (Round)
8.32×8.32 mm vs 8.32×8.32 mm
54.37 mm²   54.37 mm²
Face-up size outline for true size of 8.32×8.32mm
2.7ct Sapphire Round (8.32×8.32mm)
2.1ct Diamond Round (8.32×8.32mm)
Difference: 0% (0 mm²)
2.7ct Sapphire (Round, 8.32×8.32mm) and 2.1ct Diamond (Round, 8.32×8.32mm) have the same face-up area.


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