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14ct Sapphire (Oval, 18.23×12.15mm, Blue) vs 14ct Diamond (Oval, 19.56×13.04mm, White)


Quick summary: When looked from above (face-up position), 14ct Diamond (19.56×13.04mm, oval cut) appears 15% larger than 14ct Sapphire (18.23×12.15mm, oval cut). See below how they compare side-by-side on a ring and finger.

14ct Sapphire (oval cut)
vs
 14ct Diamond (oval cut)
blue
 
white
18.23×12.15 mm 19.56×13.04 mm
actual size
Actual size of 14ct Sapphire (oval cut, 18.23×12.15mm, Blue color)   Actual size of 14ct Diamond (oval cut, 19.56×13.04mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 14ct Sapphire (oval cut, 18.23×12.15mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 14ct Diamond (oval cut, 19.56×13.04mm) 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
 72% vs 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 14ct Sapphire Oval (18.23×12.15mm, Blue) and 14ct Diamond Oval (19.56×13.04mm, 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.


14 Ct Sapphire (Oval) 14 Ct Diamond (Oval)
18.23×12.15 mm vs 19.56×13.04 mm
181.63 mm²   209.15 mm²
Face-up size outline for 14ct Diamond (19.56×13.04mm, oval cut)
Face-up size outline for 14ct Sapphire (18.23×12.15mm, oval cut)
14ct Sapphire Oval (18.23×12.15mm)
14ct Diamond Oval (19.56×13.04mm)
Difference: 15% (27.52 mm²)
14ct Diamond (Oval, 19.56×13.04mm) has approx. 15% more face-up area than 14ct Sapphire (Oval, 18.23×12.15mm).


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