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3ct Rhodolite (Trillion, 10.69×10.69mm, Purple) vs 3ct Amethyst (Trillion, 12.09×12.09mm, Violet)


Quick summary: When looked from above (face-up position), 3ct Amethyst (12.09×12.09mm, trillion cut) appears 28% larger than 3ct Rhodolite (10.69×10.69mm, trillion cut). See below how they compare side-by-side on a ring and finger.

3ct Rhodolite (trillion cut)
vs
 3ct Amethyst (trillion cut)
purple
 
violet
10.69×10.69 mm 12.09×12.09 mm
actual size
Actual size of 3ct Rhodolite (trillion cut, 10.69×10.69mm, Purple color)   Actual size of 3ct Amethyst (trillion cut, 12.09×12.09mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 3ct Rhodolite (trillion cut, 10.69×10.69mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 3ct Amethyst (trillion cut, 12.09×12.09mm) 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
 64% vs 72%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Rhodolite Trillion (10.69×10.69mm, Purple) and 3ct Amethyst Trillion (12.09×12.09mm, 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, Rhodolite will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.84 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.


3 Ct Rhodolite (Trillion) 3 Ct Amethyst (Trillion)
10.69×10.69 mm vs 12.09×12.09 mm
70.85 mm²   90.62 mm²
Face-up size outline for 3ct Amethyst (12.09×12.09mm, trillion cut)
Face-up size outline for 3ct Rhodolite (10.69×10.69mm, trillion cut)
3ct Rhodolite Trillion (10.69×10.69mm)
3ct Amethyst Trillion (12.09×12.09mm)
Difference: 28% (19.77 mm²)
3ct Amethyst (Trillion, 12.09×12.09mm) has approx. 28% more face-up area than 3ct Rhodolite (Trillion, 10.69×10.69mm).


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