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1.2ct Zircon (Oval, 7.65×5.1mm, Bluish Green) vs 0.4ct Sapphire (Cabochon, 5.04×3.36mm, Blue)


Quick summary: When looked from above (face-up position), 1.2ct Zircon (7.65×5.1mm, oval cut) appears 2.3 times larger than 0.4ct Sapphire (5.04×3.36mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

1.2ct Zircon (oval cut)
vs
 0.4ct Sapphire (cabochon cut)
bluish green
 
blue
7.65×5.1 mm 5.04×3.36 mm
actual size
Actual size of 1.2ct Zircon (oval cut, 7.65×5.1mm, Bluish Green color)   Actual size of 0.4ct Sapphire (cabochon cut, 5.04×3.36mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 1.2ct Zircon (oval cut, 7.65×5.1mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.4ct Sapphire (cabochon cut, 5.04×3.36mm) 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
 31% vs 20%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.2ct Zircon Oval (7.65×5.1mm, Bluish Green) and 0.4ct Sapphire Cabochon (5.04×3.36mm, 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, Zircon will face-up smaller than Sapphire for a given carat weight, because it has higher specific gravity (4.7 vs. 4 - this means it's "heavier" compared to Sapphire 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.


1.2 Ct Zircon (Oval) 0.4 Ct Sapphire (Cabochon)
7.65×5.1 mm vs 5.04×3.36 mm
31.99 mm²   13.89 mm²
Face-up size outline for 1.2ct Zircon (7.65×5.1mm, oval cut)
Face-up size outline for 0.4ct Sapphire (5.04×3.36mm, cabochon cut)
1.2ct Zircon Oval (7.65×5.1mm)
0.4ct Sapphire Cabochon (5.04×3.36mm)
Difference: 130% (18.1 mm²)
1.2ct Zircon (Oval, 7.65×5.1mm) has approx. 130% more face-up area than 0.4ct Sapphire (Cabochon, 5.04×3.36mm). In other words, it's 2.3x larger.


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