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1 Ct Tanzanite (Round)

vs

1.5 Ct Emerald (Round)

blue
 
dark yellowish green
6.37×6.37 mm 7.8×7.8 mm
actual size
Actual size of 1ct Tanzanite   Actual size of 1.5ct Emerald
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Blue 1ct Tanzanite on a ring
64 mm
Right finger image
Ring on a right finger
Dark Yellowish Green 1.5ct Emerald on a ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Tanzanite Round (6.37×6.37mm, Blue) and 1.5ct Emerald Round (7.8×7.8mm, Dark 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?

JamesAllen → high-quality Emeralds, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.

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 (3.3 vs. 2.7 - 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.


1 Ct Tanzanite (Round) 1.5 Ct Emerald (Round)
6.37×6.37 mm vs 7.8×7.8 mm
31.87 mm²   47.78 mm²
Face-up size outline
Face-up size outline
1ct Tanzanite Round (6.37×6.37mm)
1.5ct Emerald Round (7.8×7.8mm)
Difference: 50% (15.91 mm²)
1.5ct Emerald Round (7.8×7.8mm) has approx. 50% more face-up area than 1ct Tanzanite Round (6.37×6.37mm).


Popular comparisons:

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Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.