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0.46ct Diamond (Round, 5.02×5.02mm, White) vs 0.6ct Amethyst (Round, 5.78×5.78mm, Violet)


Quick summary: When looked from above (face-up position), 0.6ct Amethyst (5.78×5.78mm, round cut) appears 33% larger than 0.46ct Diamond (5.02×5.02mm, round cut). See below how they compare side-by-side on a ring and finger.

0.46ct Diamond (round cut)
vs
 0.6ct Amethyst (round cut)
white
 
violet
5.02×5.02 mm 5.78×5.78 mm
actual size
Actual size of 0.46ct Diamond (round cut, 5.02×5.02mm, White color)   Actual size of 0.6ct Amethyst (round cut, 5.78×5.78mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.46ct Diamond (round cut, 5.02×5.02mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 0.6ct Amethyst (round cut, 5.78×5.78mm) 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
 30% vs 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.46ct Diamond Round (5.02×5.02mm, White) and 0.6ct Amethyst Round (5.78×5.78mm, 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, Diamond will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.52 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.


0.46 Ct Diamond (Round) 0.6 Ct Amethyst (Round)
5.02×5.02 mm vs 5.78×5.78 mm
19.79 mm²   26.24 mm²
Face-up size outline for 0.6ct Amethyst (5.78×5.78mm, round cut)
Face-up size outline for 0.46ct Diamond (5.02×5.02mm, round cut)
0.46ct Diamond Round (5.02×5.02mm)
0.6ct Amethyst Round (5.78×5.78mm)
Difference: 33% (6.45 mm²)
0.6ct Amethyst (Round, 5.78×5.78mm) has approx. 33% more face-up area than 0.46ct Diamond (Round, 5.02×5.02mm).


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