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4.77ct Zircon (Trillion, 11.25×11.25mm, Bluish Green) vs 4.77ct Spinel (Trillion, 12.25×12.25mm, Red)


Quick summary: When looked from above (face-up position), 4.77ct Spinel (12.25×12.25mm, trillion cut) appears 19% larger than 4.77ct Zircon (11.25×11.25mm, trillion cut). See below how they compare side-by-side on a ring and finger.

4.77ct Zircon (trillion cut)
vs
4.77ct Spinel (trillion cut)
bluish green
 
red
11.25×11.25 mm 12.25×12.25 mm
actual size
Actual size of 4.77ct Zircon (trillion cut, 11.25×11.25mm, Bluish Green color)   Actual size of 4.77ct Spinel (trillion cut, 12.25×12.25mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 4.77ct Zircon (trillion cut, 11.25×11.25mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 4.77ct Spinel (trillion cut, 12.25×12.25mm) 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
67% vs 73%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4.77ct Zircon Trillion (11.25×11.25mm, Bluish Green) and 4.77ct Spinel Trillion (12.25×12.25mm, 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 Spinel for a given carat weight, because it has higher specific gravity (4.7 vs. 3.6 - this means it's "heavier" compared to Spinel 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.


4.77 Ct Zircon (Trillion) 4.77 Ct Spinel (Trillion)
11.25×11.25 mm vs 12.25×12.25 mm
78.47 mm²   93.04 mm²
Face-up size outline for 4.77ct Spinel (12.25×12.25mm, trillion cut)
Face-up size outline for 4.77ct Zircon (11.25×11.25mm, trillion cut)
4.77ct Zircon Trillion (11.25×11.25mm)
4.77ct Spinel Trillion (12.25×12.25mm)
Difference: 19% (14.57 mm²)
4.77ct Spinel (Trillion, 12.25×12.25mm) has approx. 19% more face-up area than 4.77ct Zircon (Trillion, 11.25×11.25mm).


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