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3ct Benitoite (Oval, 11.25×7.5mm, Blue) vs 1ct Sapphire (Oval, 7.56×5.04mm, Blue)


Quick summary: When looked from above (face-up position), 3ct Benitoite (11.25×7.5mm, oval cut) appears 2.2 times larger than 1ct Sapphire (7.56×5.04mm, oval cut). See below how they compare side-by-side on a ring and finger.

3ct Benitoite (oval cut)
vs
 1ct Sapphire (oval cut)
blue
 
blue
11.25×7.5 mm 7.56×5.04 mm
actual size
Actual size of 3ct Benitoite (oval cut, 11.25×7.5mm, Blue color)   Actual size of 1ct Sapphire (oval cut, 7.56×5.04mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 3ct Benitoite (oval cut, 11.25×7.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1ct Sapphire (oval cut, 7.56×5.04mm) 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
 45% vs 30%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Benitoite Oval (11.25×7.5mm, Blue) and 1ct Sapphire Oval (7.56×5.04mm, 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 Benitoite for a given carat weight, because it has higher specific gravity (4 vs. 3.65 - this means it's "heavier" compared to Benitoite 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.


3 Ct Benitoite (Oval) 1 Ct Sapphire (Oval)
11.25×7.5 mm vs 7.56×5.04 mm
69.19 mm²   31.24 mm²
Face-up size outline for 3ct Benitoite (11.25×7.5mm, oval cut)
Face-up size outline for 1ct Sapphire (7.56×5.04mm, oval cut)
3ct Benitoite Oval (11.25×7.5mm)
1ct Sapphire Oval (7.56×5.04mm)
Difference: 121% (37.95 mm²)
3ct Benitoite (Oval, 11.25×7.5mm) has approx. 121% more face-up area than 1ct Sapphire (Oval, 7.56×5.04mm). In other words, it's 2.21x larger.


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