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8.5ct Diaspore (Round, 12.88×12.88mm, Light Yellowish Green) vs 8.5ct Zircon (Round, 11.56×11.56mm, Orange)


Quick summary: When looked from above (face-up position), 8.5ct Diaspore (12.88×12.88mm, round cut) appears 24% larger than 8.5ct Zircon (11.56×11.56mm, round cut). See below how they compare side-by-side on a ring and finger.

8.5ct Diaspore (round cut)
vs
 8.5ct Zircon (round cut)
light yellowish green
 
orange
12.88×12.88 mm 11.56×11.56 mm
actual size
Actual size of 8.5ct Diaspore (round cut, 12.88×12.88mm, Light Yellowish Green color)   Actual size of 8.5ct Zircon (round cut, 11.56×11.56mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Yellowish Green 8.5ct Diaspore (round cut, 12.88×12.88mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 8.5ct Zircon (round cut, 11.56×11.56mm) 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
 77% vs 69%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8.5ct Diaspore Round (12.88×12.88mm, Light Yellowish Green) and 8.5ct Zircon Round (11.56×11.56mm, Orange) 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 Diaspore for a given carat weight, because it has higher specific gravity (4.7 vs. 3.4 - this means it's "heavier" compared to Diaspore 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 Diaspore (Round) 8.5 Ct Zircon (Round)
12.88×12.88 mm vs 11.56×11.56 mm
130.29 mm²   104.96 mm²
Face-up size outline for 8.5ct Diaspore (12.88×12.88mm, round cut)
Face-up size outline for 8.5ct Zircon (11.56×11.56mm, round cut)
8.5ct Diaspore Round (12.88×12.88mm)
8.5ct Zircon Round (11.56×11.56mm)
Difference: 24% (25.33 mm²)
8.5ct Diaspore (Round, 12.88×12.88mm) has approx. 24% more face-up area than 8.5ct Zircon (Round, 11.56×11.56mm).


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