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12ct Tanzanite (Asscher, 12.95×12.95mm, Blue) vs 12ct Aquamarine (Asscher, 13.88×13.88mm, Light Blue)


Quick summary: When looked from above (face-up position), 12ct Aquamarine (13.88×13.88mm, asscher cut) appears 15% larger than 12ct Tanzanite (12.95×12.95mm, asscher cut). See below how they compare side-by-side on a ring and finger.

12ct Tanzanite (asscher cut)
vs
 12ct Aquamarine (asscher cut)
blue
 
light blue
12.95×12.95 mm 13.88×13.88 mm
actual size
Actual size of 12ct Tanzanite (asscher cut, 12.95×12.95mm, Blue color)   Actual size of 12ct Aquamarine (asscher cut, 13.88×13.88mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 12ct Tanzanite (asscher cut, 12.95×12.95mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 12ct Aquamarine (asscher cut, 13.88×13.88mm) 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
 77% vs 83%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 12ct Tanzanite Asscher (12.95×12.95mm, Blue) and 12ct Aquamarine Asscher (13.88×13.88mm, Light 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 Aquamarine for a given carat weight, because it has higher specific gravity (3.35 vs. 2.72 - this means it's "heavier" compared to Aquamarine 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.


12 Ct Tanzanite (Asscher) 12 Ct Aquamarine (Asscher)
12.95×12.95 mm vs 13.88×13.88 mm
154.29 mm²   177.24 mm²
Face-up size outline for 12ct Aquamarine (13.88×13.88mm, asscher cut)
Face-up size outline for 12ct Tanzanite (12.95×12.95mm, asscher cut)
12ct Tanzanite Asscher (12.95×12.95mm)
12ct Aquamarine Asscher (13.88×13.88mm)
Difference: 15% (22.95 mm²)
12ct Aquamarine (Asscher, 13.88×13.88mm) has approx. 15% more face-up area than 12ct Tanzanite (Asscher, 12.95×12.95mm).


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