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0.5ct Zircon (Princess, 4.06×4.06mm, White) vs 0.8ct Amethyst (Oval, 8.06×5.37mm, Violet)


Quick summary: When looked from above (face-up position), 0.8ct Amethyst (8.06×5.37mm, oval cut) appears 2.2 times larger than 0.5ct Zircon (4.06×4.06mm, princess cut). See below how they compare side-by-side on a ring and finger.

0.5ct Zircon (princess cut)
vs
0.8ct Amethyst (oval cut)
white
 
violet
4.06×4.06 mm 8.06×5.37 mm
actual size
Actual size of 0.5ct Zircon (princess cut, 4.06×4.06mm, White color)   Actual size of 0.8ct Amethyst (oval cut, 8.06×5.37mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.5ct Zircon (princess cut, 4.06×4.06mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 0.8ct Amethyst (oval cut, 8.06×5.37mm) 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
25% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.5ct Zircon Princess (4.06×4.06mm, White) and 0.8ct Amethyst Oval (8.06×5.37mm, Violet) 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 Amethyst for a given carat weight, because it has higher specific gravity (4.7 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.


0.5 Ct Zircon (Princess) 0.8 Ct Amethyst (Oval)
4.06×4.06 mm vs 8.06×5.37 mm
16.48 mm²   35.49 mm²
Face-up size outline for 0.8ct Amethyst (8.06×5.37mm, oval cut)
Face-up size outline for 0.5ct Zircon (4.06×4.06mm, princess cut)
0.5ct Zircon Princess (4.06×4.06mm)
0.8ct Amethyst Oval (8.06×5.37mm)
Difference: 115% (19.01 mm²)
0.8ct Amethyst (Oval, 8.06×5.37mm) has approx. 115% more face-up area than 0.5ct Zircon (Princess, 4.06×4.06mm). In other words, it's 2.15x larger.


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