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0.5ct Amethyst (Oval, 6.89×4.59mm, Violet) vs 1ct Aquamarine (Oval, 8.63×5.75mm, Light Blue)


Quick summary: When looked from above (face-up position), 1ct Aquamarine (8.63×5.75mm, oval cut) appears 57% larger than 0.5ct Amethyst (6.89×4.59mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.5ct Amethyst (oval cut)
vs
1ct Aquamarine (oval cut)
violet
 
light blue
6.89×4.59 mm 8.63×5.75 mm
actual size
Actual size of 0.5ct Amethyst (oval cut, 6.89×4.59mm, Violet color)   Actual size of 1ct Aquamarine (oval cut, 8.63×5.75mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 0.5ct Amethyst (oval cut, 6.89×4.59mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 1ct Aquamarine (oval cut, 8.63×5.75mm) 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
28% vs 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.5ct Amethyst Oval (6.89×4.59mm, Violet) and 1ct Aquamarine Oval (8.63×5.75mm, Light Blue) 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, Aquamarine will face-up slightly smaller than Amethyst for a given carat weight, because it has higher specific gravity (2.72 vs. 2.65 - this means it's "slightly 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 Amethyst (Oval) 1 Ct Aquamarine (Oval)
6.89×4.59 mm vs 8.63×5.75 mm
25.93 mm²   40.69 mm²
Face-up size outline for 1ct Aquamarine (8.63×5.75mm, oval cut)
Face-up size outline for 0.5ct Amethyst (6.89×4.59mm, oval cut)
0.5ct Amethyst Oval (6.89×4.59mm)
1ct Aquamarine Oval (8.63×5.75mm)
Difference: 57% (14.76 mm²)
1ct Aquamarine (Oval, 8.63×5.75mm) has approx. 57% more face-up area than 0.5ct Amethyst (Oval, 6.89×4.59mm).


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