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0.9ct Topaz (Princess, 5.41×5.41mm, Blue) vs 0.9ct Diamond (Cushion, 5.63×5.63mm, White)


Quick summary: When looked from above (face-up position), 0.9ct Topaz (5.41×5.41mm, princess cut) appears 3% larger than 0.9ct Diamond (5.63×5.63mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.9ct Topaz (princess cut)
vs
 0.9ct Diamond (cushion cut)
blue
 
white
5.41×5.41 mm 5.63×5.63 mm
actual size
Actual size of 0.9ct Topaz (princess cut, 5.41×5.41mm, Blue color)   Actual size of 0.9ct Diamond (cushion cut, 5.63×5.63mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.9ct Topaz (princess cut, 5.41×5.41mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.9ct Diamond (cushion cut, 5.63×5.63mm) 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
 33% vs 34%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.9ct Topaz Princess (5.41×5.41mm, Blue) and 0.9ct Diamond Cushion (5.63×5.63mm, 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, Topaz will face-up slightly smaller than Diamond for a given carat weight, because it has higher specific gravity (3.53 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.


0.9 Ct Topaz (Princess) 0.9 Ct Diamond (Cushion)
5.41×5.41 mm vs 5.63×5.63 mm
29.27 mm²   28.53 mm²
Face-up size outline for 0.9ct Topaz (5.41×5.41mm, princess cut)
Face-up size outline for 0.9ct Diamond (5.63×5.63mm, cushion cut)
0.9ct Topaz Princess (5.41×5.41mm)
0.9ct Diamond Cushion (5.63×5.63mm)
Difference: 3% (0.74 mm²)
0.9ct Topaz (Princess, 5.41×5.41mm) has approx. 3% more face-up area than 0.9ct Diamond (Cushion, 5.63×5.63mm).


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