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0.2ct Tanzanite (Baguette, 4.32×2.88mm, Blue) vs 1ct Diamond (Oval, 8.12×5.41mm, Blue)


Quick summary: When looked from above (face-up position), 1ct Colored Diamond (8.12×5.41mm, oval cut) appears 2.9 times larger than 0.2ct Tanzanite (4.32×2.88mm, baguette cut). See below how they compare side-by-side on a ring and finger.

0.2ct Tanzanite (baguette cut)
vs
 1ct Diamond (oval cut)
blue
 
blue
4.32×2.88 mm 8.12×5.41 mm
actual size
Actual size of 0.2ct Tanzanite (baguette cut, 4.32×2.88mm, Blue color)   Actual size of 1ct Diamond (oval cut, 8.12×5.41mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.2ct Tanzanite (baguette cut, 4.32×2.88mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1ct Diamond (oval cut, 8.12×5.41mm) 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
 18% vs 33%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.2ct Tanzanite Baguette (4.32×2.88mm, Blue) and 1ct Diamond Oval (8.12×5.41mm, Blue) 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.


0.2 Ct Tanzanite (Baguette) 1 Ct Colored Diamond (Oval)
4.32×2.88 mm vs 8.12×5.41 mm
12.44 mm²   36.02 mm²
Face-up size outline for 1ct Diamond (8.12×5.41mm, oval cut)
Face-up size outline for 0.2ct Tanzanite (4.32×2.88mm, baguette cut)
0.2ct Tanzanite Baguette (4.32×2.88mm)
1ct Colored Diamond Oval (8.12×5.41mm)
Difference: 190% (23.58 mm²)
1ct Colored Diamond (Oval, 8.12×5.41mm) has approx. 190% more face-up area than 0.2ct Tanzanite (Baguette, 4.32×2.88mm). In other words, it's 2.9x larger.


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