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3.7ct Sapphire (Oval, 11.7×7.8mm, Blue) vs 12ct Sapphire (Oval, 17.31×11.54mm, Blue)


Quick summary: When looked from above (face-up position), 12ct Sapphire (17.31×11.54mm, oval cut) appears 2.2 times larger than 3.7ct Sapphire (11.7×7.8mm, oval cut). See below how they compare side-by-side on a ring and finger.

3.7ct Sapphire (oval cut)
vs
 12ct Sapphire (oval cut)
blue
 
blue
11.7×7.8 mm 17.31×11.54 mm
actual size
Actual size of 3.7ct Sapphire (oval cut, 11.7×7.8mm, Blue color)   Actual size of 12ct Sapphire (oval cut, 17.31×11.54mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 3.7ct Sapphire (oval cut, 11.7×7.8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 12ct Sapphire (oval cut, 17.31×11.54mm) 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
 47% vs 69%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3.7ct Sapphire Oval (11.7×7.8mm, Blue) and 12ct Sapphire Oval (17.31×11.54mm, 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

The face-up size depends on the shape of the gem, its weight and 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.


3.7 Ct Sapphire (Oval) 12 Ct Sapphire (Oval)
11.7×7.8 mm vs 17.31×11.54 mm
74.83 mm²   163.8 mm²
Face-up size outline for 12ct Sapphire (17.31×11.54mm, oval cut)
Face-up size outline for 3.7ct Sapphire (11.7×7.8mm, oval cut)
3.7ct Sapphire Oval (11.7×7.8mm)
12ct Sapphire Oval (17.31×11.54mm)
Difference: 119% (88.97 mm²)
12ct Sapphire (Oval, 17.31×11.54mm) has approx. 119% more face-up area than 3.7ct Sapphire (Oval, 11.7×7.8mm). In other words, it's 2.19x larger.


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