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8ct Zircon (Oval, 14.39×9.59mm, Orange) vs 30ct Sapphire (Oval, 23.51×15.67mm, Blue)


Quick summary: When looked from above (face-up position), 30ct Sapphire (23.51×15.67mm, oval cut) appears 2.7 times larger than 8ct Zircon (14.39×9.59mm, oval cut). See below how they compare side-by-side on a ring and finger.

8ct Zircon (oval cut)
vs
 30ct Sapphire (oval cut)
orange
 
blue
14.39×9.59 mm 23.51×15.67 mm
actual size
Actual size of 8ct Zircon (oval cut, 14.39×9.59mm, Orange color)   Actual size of 30ct Sapphire (oval cut, 23.51×15.67mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Orange 8ct Zircon (oval cut, 14.39×9.59mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 30ct Sapphire (oval cut, 23.51×15.67mm) 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
 57% vs 93%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Zircon Oval (14.39×9.59mm, Orange) and 30ct Sapphire Oval (23.51×15.67mm, 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.


8 Ct Zircon (Oval) 30 Ct Sapphire (Oval)
14.39×9.59 mm vs 23.51×15.67 mm
113.16 mm²   302.09 mm²
Face-up size outline for 30ct Sapphire (23.51×15.67mm, oval cut)
Face-up size outline for 8ct Zircon (14.39×9.59mm, oval cut)
8ct Zircon Oval (14.39×9.59mm)
30ct Sapphire Oval (23.51×15.67mm)
Difference: 167% (188.93 mm²)
30ct Sapphire (Oval, 23.51×15.67mm) has approx. 167% more face-up area than 8ct Zircon (Oval, 14.39×9.59mm). In other words, it's 2.67x larger.


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