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36ct Aquamarine (Cushion, 20.78×20.78mm, Light Blue) vs 36ct Diamond (Cushion, 19.24×19.24mm, White)


Quick summary: When looked from above (face-up position), 36ct Aquamarine (20.78×20.78mm, cushion cut) appears 17% larger than 36ct Diamond (19.24×19.24mm, cushion cut). See below how they compare side-by-side on a ring and finger.

36ct Aquamarine (cushion cut)
vs
 36ct Diamond (cushion cut)
light blue
 
white
20.78×20.78 mm 19.24×19.24 mm
actual size
Actual size of 36ct Aquamarine (cushion cut, 20.78×20.78mm, Light Blue color)   Actual size of 36ct Diamond (cushion cut, 19.24×19.24mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 36ct Aquamarine (cushion cut, 20.78×20.78mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 36ct Diamond (cushion cut, 19.24×19.24mm) 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
 123% vs 114%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 36ct Aquamarine Cushion (20.78×20.78mm, Light Blue) and 36ct Diamond Cushion (19.24×19.24mm, White) 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, Diamond will face-up smaller than Aquamarine for a given carat weight, because it has higher specific gravity (3.52 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.


36 Ct Aquamarine (Cushion) 36 Ct Diamond (Cushion)
20.78×20.78 mm vs 19.24×19.24 mm
388.63 mm²   333.16 mm²
Face-up size outline for 36ct Aquamarine (20.78×20.78mm, cushion cut)
Face-up size outline for 36ct Diamond (19.24×19.24mm, cushion cut)
36ct Aquamarine Cushion (20.78×20.78mm)
36ct Diamond Cushion (19.24×19.24mm)
Difference: 17% (55.47 mm²)
36ct Aquamarine (Cushion, 20.78×20.78mm) has approx. 17% more face-up area than 36ct Diamond (Cushion, 19.24×19.24mm).


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