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13ct Diamond (Round, 15.28×15.28mm, White) vs 13ct Zircon (Round, 13.37×13.37mm, Orange)


Quick summary: When looked from above (face-up position), 13ct Diamond (15.28×15.28mm, round cut) appears 31% larger than 13ct Zircon (13.37×13.37mm, round cut). See below how they compare side-by-side on a ring and finger.

13ct Diamond (round cut)
vs
 13ct Zircon (round cut)
white
 
orange
15.28×15.28 mm 13.37×13.37 mm
actual size
Actual size of 13ct Diamond (round cut, 15.28×15.28mm, White color)   Actual size of 13ct Zircon (round cut, 13.37×13.37mm, Orange color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 13ct Diamond (round cut, 15.28×15.28mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 13ct Zircon (round cut, 13.37×13.37mm) 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
 91% vs 80%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Diamond Round (15.28×15.28mm, White) and 13ct Zircon Round (13.37×13.37mm, 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 Diamond for a given carat weight, because it has higher specific gravity (4.7 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


13 Ct Diamond (Round) 13 Ct Zircon (Round)
15.28×15.28 mm vs 13.37×13.37 mm
183.37 mm²   140.4 mm²
Face-up size outline for 13ct Diamond (15.28×15.28mm, round cut)
Face-up size outline for 13ct Zircon (13.37×13.37mm, round cut)
13ct Diamond Round (15.28×15.28mm)
13ct Zircon Round (13.37×13.37mm)
Difference: 31% (42.97 mm²)
13ct Diamond (Round, 15.28×15.28mm) has approx. 31% more face-up area than 13ct Zircon (Round, 13.37×13.37mm).


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