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1.25ct Tanzanite (Oval, 8.69×5.79mm, Blue) vs 3.1ct Morganite (Oval, 12.57×8.38mm, Light Purple)


Quick summary: When looked from above (face-up position), 3.1ct Morganite (12.57×8.38mm, oval cut) appears 2.1 times larger than 1.25ct Tanzanite (8.69×5.79mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.25ct Tanzanite (oval cut)
vs
 3.1ct Morganite (oval cut)
blue
 
light purple
8.69×5.79 mm 12.57×8.38 mm
actual size
Actual size of 1.25ct Tanzanite (oval cut, 8.69×5.79mm, Blue color)   Actual size of 3.1ct Morganite (oval cut, 12.57×8.38mm, Light Purple color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.25ct Tanzanite (oval cut, 8.69×5.79mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Purple 3.1ct Morganite (oval cut, 12.57×8.38mm) 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
 35% vs 50%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.25ct Tanzanite Oval (8.69×5.79mm, Blue) and 3.1ct Morganite Oval (12.57×8.38mm, Light Purple) 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 Morganite for a given carat weight, because it has higher specific gravity (3.35 vs. 2.8 - this means it's "heavier" compared to Morganite 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.


1.25 Ct Tanzanite (Oval) 3.1 Ct Morganite (Oval)
8.69×5.79 mm vs 12.57×8.38 mm
41.26 mm²   86.38 mm²
Face-up size outline for 3.1ct Morganite (12.57×8.38mm, oval cut)
Face-up size outline for 1.25ct Tanzanite (8.69×5.79mm, oval cut)
1.25ct Tanzanite Oval (8.69×5.79mm)
3.1ct Morganite Oval (12.57×8.38mm)
Difference: 109% (45.12 mm²)
3.1ct Morganite (Oval, 12.57×8.38mm) has approx. 109% more face-up area than 1.25ct Tanzanite (Oval, 8.69×5.79mm). In other words, it's 2.09x larger.


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