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2ct Tanzanite (Round, 8.03×8.03mm, Blue) vs 2ct Emerald (Emerald, 9.17×6.79mm, Green)


Quick summary: When looked from above (face-up position), 2ct Emerald (9.17×6.79mm, emerald cut) appears 14% larger than 2ct Tanzanite (8.03×8.03mm, round cut). See below how they compare side-by-side on a ring and finger.

2ct Tanzanite (round cut)
vs
 2ct Emerald (emerald cut)
blue
 
green
8.03×8.03 mm 9.17×6.79 mm
actual size
Actual size of 2ct Tanzanite (round cut, 8.03×8.03mm, Blue color)   Actual size of 2ct Emerald (emerald cut, 9.17×6.79mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 2ct Tanzanite (round cut, 8.03×8.03mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 2ct Emerald (emerald cut, 9.17×6.79mm) 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
 48% vs 41%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2ct Tanzanite Round (8.03×8.03mm, Blue) and 2ct Emerald Emerald (9.17×6.79mm, 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 smaller than Emerald for a given carat weight, because it has higher specific gravity (3.35 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


2 Ct Tanzanite (Round) 2 Ct Emerald (Emerald)
8.03×8.03 mm vs 9.17×6.79 mm
50.64 mm²   57.91 mm²
Face-up size outline for 2ct Emerald (9.17×6.79mm, emerald cut)
Face-up size outline for 2ct Tanzanite (8.03×8.03mm, round cut)
2ct Tanzanite Round (8.03×8.03mm)
2ct Emerald Emerald (9.17×6.79mm)
Difference: 14% (7.27 mm²)
2ct Emerald (Emerald, 9.17×6.79mm) has approx. 14% more face-up area than 2ct Tanzanite (Round, 8.03×8.03mm).


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