×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

19ct Tanzanite (Oval, 21.71×14.47mm, Blue) vs 19ct Aquamarine (Oval, 23.27×15.51mm, Light Blue)


Quick summary: When looked from above (face-up position), 19ct Aquamarine (23.27×15.51mm, oval cut) appears 15% larger than 19ct Tanzanite (21.71×14.47mm, oval cut). See below how they compare side-by-side on a ring and finger.

19ct Tanzanite (oval cut)
vs
 19ct Aquamarine (oval cut)
blue
 
light blue
21.71×14.47 mm 23.27×15.51 mm
actual size
Actual size of 19ct Tanzanite (oval cut, 21.71×14.47mm, Blue color)   Actual size of 19ct Aquamarine (oval cut, 23.27×15.51mm, 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 19ct Tanzanite (oval cut, 21.71×14.47mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 19ct Aquamarine (oval cut, 23.27×15.51mm) 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
 86% vs 92%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 19ct Tanzanite Oval (21.71×14.47mm, Blue) and 19ct Aquamarine Oval (23.27×15.51mm, 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.


19 Ct Tanzanite (Oval) 19 Ct Aquamarine (Oval)
21.71×14.47 mm vs 23.27×15.51 mm
257.6 mm²   295.95 mm²
Face-up size outline for 19ct Aquamarine (23.27×15.51mm, oval cut)
Face-up size outline for 19ct Tanzanite (21.71×14.47mm, oval cut)
19ct Tanzanite Oval (21.71×14.47mm)
19ct Aquamarine Oval (23.27×15.51mm)
Difference: 15% (38.35 mm²)
19ct Aquamarine (Oval, 23.27×15.51mm) has approx. 15% more face-up area than 19ct Tanzanite (Oval, 21.71×14.47mm).


Popular comparisons: