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5ct Tanzanite (Emerald, 11.64×8.62mm, Blue) vs 2.5ct Peridot (Marquise, 14.22×7.11mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 5ct Tanzanite (11.64×8.62mm, emerald cut) appears 30% larger than 2.5ct Peridot (14.22×7.11mm, marquise cut). See below how they compare side-by-side on a ring and finger.

5ct Tanzanite (emerald cut)
vs
 2.5ct Peridot (marquise cut)
blue
 
yellowish green
11.64×8.62 mm 14.22×7.11 mm
actual size
Actual size of 5ct Tanzanite (emerald cut, 11.64×8.62mm, Blue color)   Actual size of 2.5ct Peridot (marquise cut, 14.22×7.11mm, Yellowish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 5ct Tanzanite (emerald cut, 11.64×8.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 2.5ct Peridot (marquise cut, 14.22×7.11mm) 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
 52% vs 43%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5ct Tanzanite Emerald (11.64×8.62mm, Blue) and 2.5ct Peridot Marquise (14.22×7.11mm, Yellowish Green) 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 slightly smaller than Peridot for a given carat weight, because it has higher specific gravity (3.35 vs. 3.34 - this means it's "slightly heavier" compared to Peridot 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.


5 Ct Tanzanite (Emerald) 2.5 Ct Peridot (Marquise)
11.64×8.62 mm vs 14.22×7.11 mm
93.31 mm²   71.78 mm²
Face-up size outline for 5ct Tanzanite (11.64×8.62mm, emerald cut)
Face-up size outline for 2.5ct Peridot (14.22×7.11mm, marquise cut)
5ct Tanzanite Emerald (11.64×8.62mm)
2.5ct Peridot Marquise (14.22×7.11mm)
Difference: 30% (21.53 mm²)
5ct Tanzanite (Emerald, 11.64×8.62mm) has approx. 30% more face-up area than 2.5ct Peridot (Marquise, 14.22×7.11mm).


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