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6ct Topaz (Oval, 14.33×9.55mm, Blue) vs 6.25ct Diamond (Round, 11.97×11.97mm, White)


Quick summary: When looked from above (face-up position), 6.25ct Diamond (11.97×11.97mm, round cut) appears 0.3% larger than 6ct Topaz (14.33×9.55mm, oval cut). See below how they compare side-by-side on a ring and finger.

6ct Topaz (oval cut)
vs
 6.25ct Diamond (round cut)
blue
 
white
14.33×9.55 mm 11.97×11.97 mm
actual size
Actual size of 6ct Topaz (oval cut, 14.33×9.55mm, Blue color)   Actual size of 6.25ct Diamond (round cut, 11.97×11.97mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6ct Topaz (oval cut, 14.33×9.55mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 6.25ct Diamond (round cut, 11.97×11.97mm) 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
 57% vs 71%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Topaz Oval (14.33×9.55mm, Blue) and 6.25ct Diamond Round (11.97×11.97mm, 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.


6 Ct Topaz (Oval) 6.25 Ct Diamond (Round)
14.33×9.55 mm vs 11.97×11.97 mm
112.22 mm²   112.53 mm²
Face-up size outline for 6.25ct Diamond (11.97×11.97mm, round cut)
Face-up size outline for 6ct Topaz (14.33×9.55mm, oval cut)
6ct Topaz Oval (14.33×9.55mm)
6.25ct Diamond Round (11.97×11.97mm)
Difference: 0.3% (0.31 mm²)
6.25ct Diamond (Round, 11.97×11.97mm) has approx. 0.3% more face-up area than 6ct Topaz (Oval, 14.33×9.55mm).


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