×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

4ct Sapphire (Oval, 12×8mm, Dark Blue) vs 12ct Sapphire (Oval, 16×12mm, Dark Blue)


Quick summary: When looked from above (face-up position), 12ct Sapphire (16×12mm, oval cut) appears 100% larger than 4ct Sapphire (12×8mm, oval cut). See below how they compare side-by-side on a ring and finger.

4ct Sapphire (oval cut)
vs
 12ct Sapphire (oval cut)
dark blue
 
dark blue
12×8 mm 16×12 mm
actual size
Actual size of 4ct Sapphire (oval cut, 12×8mm, Dark Blue color)   Actual size of 12ct Sapphire (oval cut, 16×12mm, Dark Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Blue 4ct Sapphire (oval cut, 12×8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Blue 12ct Sapphire (oval cut, 16×12mm) 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
 48% vs 72%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4ct Sapphire Oval (12×8mm, Dark Blue) and 12ct Sapphire Oval (16×12mm, Dark 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.


4 Ct Sapphire (Oval) 12 Ct Sapphire (Oval)
12×8 mm vs 16×12 mm
78.72 mm²   157.44 mm²
Face-up size outline for 12ct Sapphire (16×12mm, oval cut)
Face-up size outline for 4ct Sapphire (12×8mm, oval cut)
4ct Sapphire Oval (12×8mm)
12ct Sapphire Oval (16×12mm)
Difference: 100% (78.72 mm²)
12ct Sapphire (Oval, 16×12mm) has approx. 100% more face-up area than 4ct Sapphire (Oval, 12×8mm).


Popular comparisons: