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30ct Topaz (Oval, 24.5×16.33mm, Blue) vs 5ct Aquamarine (Emerald, 12.45×9.22mm, Light Blue)


Quick summary: When looked from above (face-up position), 30ct Topaz (24.5×16.33mm, oval cut) appears 3.1 times larger than 5ct Aquamarine (12.45×9.22mm, emerald cut). See below how they compare side-by-side on a ring and finger.

30ct Topaz (oval cut)
vs
 5ct Aquamarine (emerald cut)
blue
 
light blue
24.5×16.33 mm 12.45×9.22 mm
actual size
Actual size of 30ct Topaz (oval cut, 24.5×16.33mm, Blue color)   Actual size of 5ct Aquamarine (emerald cut, 12.45×9.22mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 30ct Topaz (oval cut, 24.5×16.33mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 5ct Aquamarine (emerald cut, 12.45×9.22mm) 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
 97% vs 55%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Topaz Oval (24.5×16.33mm, Blue) and 5ct Aquamarine Emerald (12.45×9.22mm, 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, 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.


30 Ct Topaz (Oval) 5 Ct Aquamarine (Emerald)
24.5×16.33 mm vs 12.45×9.22 mm
328.07 mm²   106.75 mm²
Face-up size outline for 30ct Topaz (24.5×16.33mm, oval cut)
Face-up size outline for 5ct Aquamarine (12.45×9.22mm, emerald cut)
30ct Topaz Oval (24.5×16.33mm)
5ct Aquamarine Emerald (12.45×9.22mm)
Difference: 207% (221.32 mm²)
30ct Topaz (Oval, 24.5×16.33mm) has approx. 207% more face-up area than 5ct Aquamarine (Emerald, 12.45×9.22mm). In other words, it's 3.07x larger.


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