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7ct Aquamarine (Marquise, 21.52×10.76mm, Light Blue) vs 7ct Topaz (Marquise, 19.68×9.84mm, Light Blue)


Quick summary: When looked from above (face-up position), 7ct Aquamarine (21.52×10.76mm, marquise cut) appears 20% larger than 7ct Topaz (19.68×9.84mm, marquise cut). See below how they compare side-by-side on a ring and finger.

7ct Aquamarine (marquise cut)
vs
 7ct Topaz (marquise cut)
light blue
 
light blue
21.52×10.76 mm 19.68×9.84 mm
actual size
Actual size of 7ct Aquamarine (marquise cut, 21.52×10.76mm, Light Blue color)   Actual size of 7ct Topaz (marquise cut, 19.68×9.84mm, Light 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 7ct Aquamarine (marquise cut, 21.52×10.76mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 7ct Topaz (marquise cut, 19.68×9.84mm) 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 59%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 7ct Aquamarine Marquise (21.52×10.76mm, Light Blue) and 7ct Topaz Marquise (19.68×9.84mm, 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.


7 Ct Aquamarine (Marquise) 7 Ct Topaz (Marquise)
21.52×10.76 mm vs 19.68×9.84 mm
164.4 mm²   137.49 mm²
Face-up size outline for 7ct Aquamarine (21.52×10.76mm, marquise cut)
Face-up size outline for 7ct Topaz (19.68×9.84mm, marquise cut)
7ct Aquamarine Marquise (21.52×10.76mm)
7ct Topaz Marquise (19.68×9.84mm)
Difference: 20% (26.91 mm²)
7ct Aquamarine (Marquise, 21.52×10.76mm) has approx. 20% more face-up area than 7ct Topaz (Marquise, 19.68×9.84mm).


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