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9.5ct Benitoite (Princess, 11.47×11.47mm, Blue) vs 9.5ct Tanzanite (Princess, 11.8×11.8mm, Blue)


Quick summary: When looked from above (face-up position), 9.5ct Tanzanite (11.8×11.8mm, princess cut) appears 6% larger than 9.5ct Benitoite (11.47×11.47mm, princess cut). See below how they compare side-by-side on a ring and finger.

9.5ct Benitoite (princess cut)
vs
 9.5ct Tanzanite (princess cut)
blue
 
blue
11.47×11.47 mm 11.8×11.8 mm
actual size
Actual size of 9.5ct Benitoite (princess cut, 11.47×11.47mm, Blue color)   Actual size of 9.5ct Tanzanite (princess cut, 11.8×11.8mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 9.5ct Benitoite (princess cut, 11.47×11.47mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9.5ct Tanzanite (princess cut, 11.8×11.8mm) 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
 68% vs 70%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9.5ct Benitoite Princess (11.47×11.47mm, Blue) and 9.5ct Tanzanite Princess (11.8×11.8mm, 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, Benitoite will face-up smaller than Tanzanite for a given carat weight, because it has higher specific gravity (3.65 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.


9.5 Ct Benitoite (Princess) 9.5 Ct Tanzanite (Princess)
11.47×11.47 mm vs 11.8×11.8 mm
131.56 mm²   139.24 mm²
Face-up size outline for 9.5ct Tanzanite (11.8×11.8mm, princess cut)
Face-up size outline for 9.5ct Benitoite (11.47×11.47mm, princess cut)
9.5ct Benitoite Princess (11.47×11.47mm)
9.5ct Tanzanite Princess (11.8×11.8mm)
Difference: 6% (7.68 mm²)
9.5ct Tanzanite (Princess, 11.8×11.8mm) has approx. 6% more face-up area than 9.5ct Benitoite (Princess, 11.47×11.47mm).


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