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8.5ct Zircon (Radiant, 10.66×10.66mm, Orange) vs 8.5ct Sunstone (Radiant, 12.9×12.9mm, Orangey Red)


Quick summary: When looked from above (face-up position), 8.5ct Sunstone (12.9×12.9mm, radiant cut) appears 46% larger than 8.5ct Zircon (10.66×10.66mm, radiant cut). See below how they compare side-by-side on a ring and finger.

8.5ct Zircon (radiant cut)
vs
 8.5ct Sunstone (radiant cut)
orange
 
orangey red
10.66×10.66 mm 12.9×12.9 mm
actual size
Actual size of 8.5ct Zircon (radiant cut, 10.66×10.66mm, Orange color)   Actual size of 8.5ct Sunstone (radiant cut, 12.9×12.9mm, 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 8.5ct Zircon (radiant cut, 10.66×10.66mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 8.5ct Sunstone (radiant cut, 12.9×12.9mm) 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
 64% vs 77%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8.5ct Zircon Radiant (10.66×10.66mm, Orange) and 8.5ct Sunstone Radiant (12.9×12.9mm, 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.


8.5 Ct Zircon (Radiant) 8.5 Ct Sunstone (Radiant)
10.66×10.66 mm vs 12.9×12.9 mm
107.95 mm²   158.09 mm²
Face-up size outline for 8.5ct Sunstone (12.9×12.9mm, radiant cut)
Face-up size outline for 8.5ct Zircon (10.66×10.66mm, radiant cut)
8.5ct Zircon Radiant (10.66×10.66mm)
8.5ct Sunstone Radiant (12.9×12.9mm)
Difference: 46% (50.14 mm²)
8.5ct Sunstone (Radiant, 12.9×12.9mm) has approx. 46% more face-up area than 8.5ct Zircon (Radiant, 10.66×10.66mm).


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