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7ct Benitoite (Asscher, 10.51×10.51mm, Blue) vs 7ct Tanzanite (Asscher, 10.82×10.82mm, Blue)


Quick summary: When looked from above (face-up position), 7ct Tanzanite (10.82×10.82mm, asscher cut) appears 6% larger than 7ct Benitoite (10.51×10.51mm, asscher cut). See below how they compare side-by-side on a ring and finger.

7ct Benitoite (asscher cut)
vs
 7ct Tanzanite (asscher cut)
blue
 
blue
10.51×10.51 mm 10.82×10.82 mm
actual size
Actual size of 7ct Benitoite (asscher cut, 10.51×10.51mm, Blue color)   Actual size of 7ct Tanzanite (asscher cut, 10.82×10.82mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 7ct Benitoite (asscher cut, 10.51×10.51mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 7ct Tanzanite (asscher cut, 10.82×10.82mm) 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
 63% vs 65%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 7ct Benitoite Asscher (10.51×10.51mm, Blue) and 7ct Tanzanite Asscher (10.82×10.82mm, 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.


7 Ct Benitoite (Asscher) 7 Ct Tanzanite (Asscher)
10.51×10.51 mm vs 10.82×10.82 mm
101.62 mm²   107.71 mm²
Face-up size outline for 7ct Tanzanite (10.82×10.82mm, asscher cut)
Face-up size outline for 7ct Benitoite (10.51×10.51mm, asscher cut)
7ct Benitoite Asscher (10.51×10.51mm)
7ct Tanzanite Asscher (10.82×10.82mm)
Difference: 6% (6.09 mm²)
7ct Tanzanite (Asscher, 10.82×10.82mm) has approx. 6% more face-up area than 7ct Benitoite (Asscher, 10.51×10.51mm).


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