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5ct Tanzanite (Oval, 13.79×9.19mm, Blue) vs 10ct Diamond (Round, 14×14mm, White)


Quick summary: When looked from above (face-up position), 10ct Diamond (14×14mm, round cut) appears 48% larger than 5ct Tanzanite (13.79×9.19mm, oval cut). See below how they compare side-by-side on a ring and finger.

5ct Tanzanite (oval cut)
vs
10ct Diamond (round cut)
blue
 
white
13.79×9.19 mm 14×14 mm
actual size
Actual size of 5ct Tanzanite (oval cut, 13.79×9.19mm, Blue color)   Actual size of 10ct Diamond (round cut, 14×14mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 5ct Tanzanite (oval cut, 13.79×9.19mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 10ct Diamond (round cut, 14×14mm) 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
55% vs 83%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 5ct Tanzanite Oval (13.79×9.19mm, Blue) and 10ct Diamond Round (14×14mm, 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 Tanzanite for a given carat weight, because it has higher specific gravity (3.52 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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.


5 Ct Tanzanite (Oval) 10 Ct Diamond (Round)
13.79×9.19 mm vs 14×14 mm
103.92 mm²   153.94 mm²
Face-up size outline for 10ct Diamond (14×14mm, round cut)
Face-up size outline for 5ct Tanzanite (13.79×9.19mm, oval cut)
5ct Tanzanite Oval (13.79×9.19mm)
10ct Diamond Round (14×14mm)
Difference: 48% (50.02 mm²)
10ct Diamond (Round, 14×14mm) has approx. 48% more face-up area than 5ct Tanzanite (Oval, 13.79×9.19mm).


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