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3ct Zircon (Radiant, 7.53×7.53mm, Orange) vs 3ct Sunstone (Radiant, 9.11×9.11mm, Orangey Red)


Quick summary: When looked from above (face-up position), 3ct Sunstone (9.11×9.11mm, radiant cut) appears 46% larger than 3ct Zircon (7.53×7.53mm, radiant cut). See below how they compare side-by-side on a ring and finger.

3ct Zircon (radiant cut)
vs
3ct Sunstone (radiant cut)
orange
 
orangey red
7.53×7.53 mm 9.11×9.11 mm
actual size
Actual size of 3ct Zircon (radiant cut, 7.53×7.53mm, Orange color)   Actual size of 3ct Sunstone (radiant cut, 9.11×9.11mm, Orangey Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Orange 3ct Zircon (radiant cut, 7.53×7.53mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 3ct Sunstone (radiant cut, 9.11×9.11mm) 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
45% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Zircon Radiant (7.53×7.53mm, Orange) and 3ct Sunstone Radiant (9.11×9.11mm, Orangey Red) 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 Sunstone for a given carat weight, because it has higher specific gravity (4.7 vs. 2.65 - this means it's "heavier" compared to Sunstone 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.


3 Ct Zircon (Radiant) 3 Ct Sunstone (Radiant)
7.53×7.53 mm vs 9.11×9.11 mm
53.87 mm²   78.84 mm²
Face-up size outline for 3ct Sunstone (9.11×9.11mm, radiant cut)
Face-up size outline for 3ct Zircon (7.53×7.53mm, radiant cut)
3ct Zircon Radiant (7.53×7.53mm)
3ct Sunstone Radiant (9.11×9.11mm)
Difference: 46% (24.97 mm²)
3ct Sunstone (Radiant, 9.11×9.11mm) has approx. 46% more face-up area than 3ct Zircon (Radiant, 7.53×7.53mm).


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