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1.25ct Tanzanite (Oval, 8.69×5.79mm, Blue) vs 1ct Morganite (Round, 6.82×6.82mm, Light Purple)


Quick summary: When looked from above (face-up position), 1.25ct Tanzanite (8.69×5.79mm, oval cut) appears 13% larger than 1ct Morganite (6.82×6.82mm, round cut). See below how they compare side-by-side on a ring and finger.

1.25ct Tanzanite (oval cut)
vs
 1ct Morganite (round cut)
blue
 
light purple
8.69×5.79 mm 6.82×6.82 mm
actual size
Actual size of 1.25ct Tanzanite (oval cut, 8.69×5.79mm, Blue color)   Actual size of 1ct Morganite (round cut, 6.82×6.82mm, 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 1ct Morganite (round cut, 6.82×6.82mm) 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
 35% vs 41%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.25ct Tanzanite Oval (8.69×5.79mm, Blue) and 1ct Morganite Round (6.82×6.82mm, 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) 1 Ct Morganite (Round)
8.69×5.79 mm vs 6.82×6.82 mm
41.26 mm²   36.53 mm²
Face-up size outline for 1.25ct Tanzanite (8.69×5.79mm, oval cut)
Face-up size outline for 1ct Morganite (6.82×6.82mm, round cut)
1.25ct Tanzanite Oval (8.69×5.79mm)
1ct Morganite Round (6.82×6.82mm)
Difference: 13% (4.73 mm²)
1.25ct Tanzanite (Oval, 8.69×5.79mm) has approx. 13% more face-up area than 1ct Morganite (Round, 6.82×6.82mm).


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