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1.3ct Tanzanite (Emerald, 7.43×5.5mm, Blue) vs 0.32ct Diamond (Round, 4.45×4.45mm, White)


Quick summary: When looked from above (face-up position), 1.3ct Tanzanite (7.43×5.5mm, emerald cut) appears 2.4 times larger than 0.32ct Diamond (4.45×4.45mm, round cut). See below how they compare side-by-side on a ring and finger.

1.3ct Tanzanite (emerald cut)
vs
 0.32ct Diamond (round cut)
blue
 
white
7.43×5.5 mm 4.45×4.45 mm
actual size
Actual size of 1.3ct Tanzanite (emerald cut, 7.43×5.5mm, Blue color)   Actual size of 0.32ct Diamond (round cut, 4.45×4.45mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.3ct Tanzanite (emerald cut, 7.43×5.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.32ct Diamond (round cut, 4.45×4.45mm) 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 27%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.3ct Tanzanite Emerald (7.43×5.5mm, Blue) and 0.32ct Diamond Round (4.45×4.45mm, 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.


1.3 Ct Tanzanite (Emerald) 0.32 Ct Diamond (Round)
7.43×5.5 mm vs 4.45×4.45 mm
38 mm²   15.55 mm²
Face-up size outline for 1.3ct Tanzanite (7.43×5.5mm, emerald cut)
Face-up size outline for 0.32ct Diamond (4.45×4.45mm, round cut)
1.3ct Tanzanite Emerald (7.43×5.5mm)
0.32ct Diamond Round (4.45×4.45mm)
Difference: 144% (22.45 mm²)
1.3ct Tanzanite (Emerald, 7.43×5.5mm) has approx. 144% more face-up area than 0.32ct Diamond (Round, 4.45×4.45mm). In other words, it's 2.44x larger.


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