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10ct Zircon (Princess, 11.01×11.01mm, Red) vs 15ct Sapphire (Emerald, 15.75×11.67mm, Purple)


Quick summary: When looked from above (face-up position), 15ct Sapphire (15.75×11.67mm, emerald cut) appears 41% larger than 10ct Zircon (11.01×11.01mm, princess cut). See below how they compare side-by-side on a ring and finger.

10ct Zircon (princess cut)
vs
 15ct Sapphire (emerald cut)
red
 
purple
11.01×11.01 mm 15.75×11.67 mm
actual size
Actual size of 10ct Zircon (princess cut, 11.01×11.01mm, Red color)   Actual size of 15ct Sapphire (emerald cut, 15.75×11.67mm, Purple color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 10ct Zircon (princess cut, 11.01×11.01mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 15ct Sapphire (emerald cut, 15.75×11.67mm) 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
 66% vs 70%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Zircon Princess (11.01×11.01mm, Red) and 15ct Sapphire Emerald (15.75×11.67mm, Purple) 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.


10 Ct Zircon (Princess) 15 Ct Sapphire (Emerald)
11.01×11.01 mm vs 15.75×11.67 mm
121.22 mm²   170.94 mm²
Face-up size outline for 15ct Sapphire (15.75×11.67mm, emerald cut)
Face-up size outline for 10ct Zircon (11.01×11.01mm, princess cut)
10ct Zircon Princess (11.01×11.01mm)
15ct Sapphire Emerald (15.75×11.67mm)
Difference: 41% (49.72 mm²)
15ct Sapphire (Emerald, 15.75×11.67mm) has approx. 41% more face-up area than 10ct Zircon (Princess, 11.01×11.01mm).


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