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5ct Amethyst (Pear, 16.68×10.05mm, Violet) vs 5ct Tanzanite (Pear, 15.42×9.29mm, Blue)


Quick summary: When looked from above (face-up position), 5ct Amethyst (16.68×10.05mm, pear cut) appears 17% larger than 5ct Tanzanite (15.42×9.29mm, pear cut). See below how they compare side-by-side on a ring and finger.

5ct Amethyst (pear cut)
vs
 5ct Tanzanite (pear cut)
violet
 
blue
16.68×10.05 mm 15.42×9.29 mm
actual size
Actual size of 5ct Amethyst (pear cut, 16.68×10.05mm, Violet color)   Actual size of 5ct Tanzanite (pear cut, 15.42×9.29mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 5ct Amethyst (pear cut, 16.68×10.05mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 5ct Tanzanite (pear cut, 15.42×9.29mm) 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
 60% vs 55%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 5ct Amethyst Pear (16.68×10.05mm, Violet) and 5ct Tanzanite Pear (15.42×9.29mm, 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, Tanzanite will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.35 vs. 2.65 - this means it's "heavier" compared to Amethyst 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 Amethyst (Pear) 5 Ct Tanzanite (Pear)
16.68×10.05 mm vs 15.42×9.29 mm
122.37 mm²   104.57 mm²
Face-up size outline for 5ct Amethyst (16.68×10.05mm, pear cut)
Face-up size outline for 5ct Tanzanite (15.42×9.29mm, pear cut)
5ct Amethyst Pear (16.68×10.05mm)
5ct Tanzanite Pear (15.42×9.29mm)
Difference: 17% (17.8 mm²)
5ct Amethyst (Pear, 16.68×10.05mm) has approx. 17% more face-up area than 5ct Tanzanite (Pear, 15.42×9.29mm).


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