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0.5ct Aquamarine (Cushion, 5×5mm, Light Blue) vs 0.5ct Topaz (Cushion, 4.58×4.58mm, Blue)


Quick summary: When looked from above (face-up position), 0.5ct Aquamarine (5×5mm, cushion cut) appears 19% larger than 0.5ct Topaz (4.58×4.58mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.5ct Aquamarine (cushion cut)
vs
 0.5ct Topaz (cushion cut)
light blue
 
blue
5×5 mm 4.58×4.58 mm
actual size
Actual size of 0.5ct Aquamarine (cushion cut, 5×5mm, Light Blue color)   Actual size of 0.5ct Topaz (cushion cut, 4.58×4.58mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 0.5ct Aquamarine (cushion cut, 5×5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.5ct Topaz (cushion cut, 4.58×4.58mm) 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 28%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.5ct Aquamarine Cushion (5×5mm, Light Blue) and 0.5ct Topaz Cushion (4.58×4.58mm, 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, Topaz will face-up smaller than Aquamarine for a given carat weight, because it has higher specific gravity (3.53 vs. 2.72 - this means it's "heavier" compared to Aquamarine 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 Aquamarine (Cushion) 0.5 Ct Topaz (Cushion)
5×5 mm vs 4.58×4.58 mm
22.5 mm²   18.88 mm²
Face-up size outline for 0.5ct Aquamarine (5×5mm, cushion cut)
Face-up size outline for 0.5ct Topaz (4.58×4.58mm, cushion cut)
0.5ct Aquamarine Cushion (5×5mm)
0.5ct Topaz Cushion (4.58×4.58mm)
Difference: 19% (3.62 mm²)
0.5ct Aquamarine (Cushion, 5×5mm) has approx. 19% more face-up area than 0.5ct Topaz (Cushion, 4.58×4.58mm).


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