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33ct Tanzanite (Cabochon, 23.3×15.53mm, Blue) vs 33ct Aquamarine (Cabochon, 24.96×16.64mm, Light Blue)


Quick summary: When looked from above (face-up position), 33ct Aquamarine (24.96×16.64mm, cabochon cut) appears 15% larger than 33ct Tanzanite (23.3×15.53mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

33ct Tanzanite (cabochon cut)
vs
 33ct Aquamarine (cabochon cut)
blue
 
light blue
23.3×15.53 mm 24.96×16.64 mm
actual size
Actual size of 33ct Tanzanite (cabochon cut, 23.3×15.53mm, Blue color)   Actual size of 33ct Aquamarine (cabochon cut, 24.96×16.64mm, 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 33ct Tanzanite (cabochon cut, 23.3×15.53mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 33ct Aquamarine (cabochon cut, 24.96×16.64mm) 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
 92% vs 99%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 33ct Tanzanite Cabochon (23.3×15.53mm, Blue) and 33ct Aquamarine Cabochon (24.96×16.64mm, 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.


33 Ct Tanzanite (Cabochon) 33 Ct Aquamarine (Cabochon)
23.3×15.53 mm vs 24.96×16.64 mm
296.72 mm²   340.57 mm²
Face-up size outline for 33ct Aquamarine (24.96×16.64mm, cabochon cut)
Face-up size outline for 33ct Tanzanite (23.3×15.53mm, cabochon cut)
33ct Tanzanite Cabochon (23.3×15.53mm)
33ct Aquamarine Cabochon (24.96×16.64mm)
Difference: 15% (43.85 mm²)
33ct Aquamarine (Cabochon, 24.96×16.64mm) has approx. 15% more face-up area than 33ct Tanzanite (Cabochon, 23.3×15.53mm).


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